bluuebunny/crossref_metadata_2025 huggingface dataset:
Entender para consentir
Authors: Ponomarenko Gabriel Luciano , Rebechi Rozane Rodrigues
Published: October 2023

O Termo de Consentimento Informado (TCI) descreve os procedimentos médicos aos quais os pacientes serão submetidos mediante concordância e assinatura. Pesquisas afirmam que existe um problema crônico de adequação dos TCIs para o leitor médio brasileiro, já que esses textos são compostos de terminologia especializada das áreas médica e jurídica. Baseando-se na Linguística de Corpus, este estudo tem por objetivo investigar os elementos lexicais que dificultam a compreensão dos TCIs. Para tanto, compilamos um corpus de estudo com 282 textos, analisados semiautomaticamente. A partir da comparação com um corpus de referência de textos de divulgação da área médica, levantamos as palavras-chave do corpus de estudo, que foram cotejadas com a lista de palavras do CorPop, composto de textos destinados ao leitor médio brasileiro. Concluímos que os TCIs não são acessíveis para a maior parcela da sociedade. A partir dos textos populares, levantamos propostas de tradução intralingual, adequando termos dos TCIs para uma linguagem mais simples.
Distalização em massa com mini-implantes na crista infrazigomática e buccal shelf em pacientes com e sem extração
Authors: Goyal Manish , Kumar Mukesh , Singh Tanisha , Nongthombam Haripriya
Published: October 2023

INTRODUÇÃO: Várias formas de tratamento podem ser utilizadas para tratar a má oclusão de Classe I, entre as quais a distalização em massa não é uma escolha comum. Dispositivos de ancoragem temporária (DATs) fornecem um melhor controle de ancoragem. MÉTODOS: Nesta série de casos, ambos os pacientes tinham má oclusão de Classe I e foram tratados com mini-implantes extra-alveolares nas regiões da crista infrazigomática (IZC) e de buccal shelf (BS), bilateralmente, para distalização em massa, visando obter uma oclusão ideal e melhora acentuada na estética do perfil facial. No caso clínico 1, não foram extraídos pré-molares; já no caso clínico 2, a distalização foi realizada após a extração de pré-molares e terceiros molares. RESULTADOS: A distalização em massa foi realizada com sucesso usando mini-implantes extra-radiculares. No caso 1, a distalização em massa foi de 5mm; já no caso 2, a distalização em massa foi de 4mm. CONCLUSÃO: O plano de tratamento e a satisfação do paciente são dois fatores importantes para um tratamento bem-sucedido. A distalização em massa também pode ser usada como uma abordagem alternativa para tratamento da má oclusão de Classe I.
Avaliação da angulação mesiodistal e da posição vertical do segundo molar superior na oclusão normal
Authors: Silveira Giordani Santos , Araujo Telma Martins de , Franco Fernanda Catharino , Ferreira Jamille Barros , Mucha José Nelson
Published: October 2023

INTRODUÇÃO: Durante o planejamento e a execução do tratamento ortodôntico, independentemente do tipo de aparelho, o correto posicionamento de todos os dentes é o primeiro passo para a obtenção de uma oclusão adequada, tanto do ponto de vista funcional quanto de estabilidade do resultado. Uma preocupação clínica frequente é a possibilidade de surgirem contatos prematuros quando os segundos molares superiores são incluídos no tratamento ortodôntico. OBJETIVO: Avaliar a angulação e a posição vertical do segundo molar superior na oclusão normal. MÉTODOS: Medidas angulares e lineares foram obtidas de imagens tomográficas de 31 crânios humanos secos com oclusão normal, da angulação mesiodistal dos pré-molares e molares superiores, e da posição vertical dos segundos molares superiores. RESULTADOS: Não houve diferença entre as medidas dos lados direito e esquerdo. Os dentes posteriores superiores apresentaram angulação mesial de coroa com média de 7° para os pré-molares, 8,5° para os primeiros molares e 2,5° para os segundos molares. As distâncias perpendiculares das pontas das cúspides mesiovestibular e distovestibular do segundo molar à linha oclusal foram 0,5 mm e 1 mm, respectivamente. CONCLUSÕES: A angulação mesial de coroa do segundo molar superior foi 6° menor do que a do primeiro molar; e 4,5° menor do que a dos pré-molares. O segundo molar superior estava afastado apicalmente da linha oclusal em 0,5 mm na cúspide mesiovestibular e em 1 mm na cúspide distovestibular.
Marxian Ecology, East and West
Authors: Foster John Bellamy
Published: October 2023

Following the work of Sinologist Joseph Needham, this talk by John Bellamy Foster illuminates the conceptual linkages between the ancient Greek and Chinese thought and modern dialectical materialism and ecological civilization. This interweaving of intellectual traditions, he writes, has created a "powerful organic ecological-materialist philosophy."
Unequal Value Transfer from Mexico to the United States
Authors: Crossa Mateo
Published: October 2023

Matteo Crossa reveals the true nature of unequal value transfer from Mexico to the United States. Going beyond a simple tally of wages lost versus remittances, Crossa's research demonstrates the true magnitude of the value stolen from Mexico, negating the claim that its manufacturing sector is a boon to the Mexican working class.
Вклад миграционных потоков из стран СНГ в экономический рост России на современном этапе
Authors: Аржаев Федор Игоревич , Андрюхин Владислав Юрьевич
Published: October 2023

Миграционные потоки из стран СНГ в Россию в условиях санкционного давления и ухудшения геополитической ситуации в целом характеризуются разнонаправленной динамикой, как и российское миграционное законодательство. Новоприсоединенные территории РФ также значительно меняют миграционные тенденции, сказываются на экономике и демографии России. В связи с этим актуальной задачей становится оценка вклада этих миграционных потоков в развитие российской экономики. Одним из теоретических результатов данного исследования стала систематизация подходов к влиянию миграции на экономику страны в условиях конфликтогенности международных отношений и высоких социальных рисков в стране — реципиенте мигрантов. Практическая важность исследования складывается из нескольких факторов: в статье на примере РФ показано, что трудовая миграция позволяет сглаживать экономические шоки, однако в ближне- и среднесрочной перспективе гораздо большее влияние на этот процесс имеют мигранты из стран СНГ, чем граждане новоприсоединенных территорий; описаны предпосылки для увеличения миграционного потока в РФ в 2023—2024 гг., в связи с чем предложено использовать систему мер по регулированию миграции, состоящую из стимулирующего, ограничивающего и балансирующего блоков; апробирована модель оценки вклада мигрантов разных категорий в ВВП России и показано, что миграционный приток позволит этому показателю вернуться на докризисный уровень в 2024 г.
Preparation and characterization of germanium dioxide nanostructure for gas sensor application: effect of laser parameters
Authors:   University of Anbar, College of Science, Department of Physics, Iraq, Yousif J. A. , Alptekin S. ,   Çankırı karatekin university, College of Science Department of Physics, Turkey, Ramizy A. ,   University of Anbar, College of Science, Department of Physics, Iraq
Published: October 2023

In this article, a novel application of germanium dioxide (GeO2) as a gas sensor is systematically reported. In detail, GeO2 layers were deposited on quartz and n-type Si substrates, as a function of laser pulses, using combined laser ablation and thermal spray coating approaches. The attained layer/s were methodically inspected in term of their morphological, structural, and optical features; specifically, highly crystalline GeO2 structure was obtained for samples prepared using 1500 pulses and above. In the meanwhile, the obtained particle diameters were found to be within the range of 15 to 274 nm, while the estimated optical band gaps exhibited values from 3.85 to 4.0 eV. Simultaneously, the gas sensing behavior demonstrated a well-oriented performance for all devices, however, devices treated with 2500 pulses delivered stable trend with sensitivity value as high as 3 × 10−6. The rise/fall period revealed an adequate outcome (~10 𝑠𝑠𝑠𝑠𝑠𝑠.) for gas sensors fabricated via pulses of 1000 and above, with respected to the working temperature. The proposed framework delivers a substitute technique towards 2D metal oxide based eco-friendly-gas sensor.
Composite nanostructured growth of (CdS)0.75 (PbS)0.25/Si solar cell and its characterization
Authors:   Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq, Nasir E. M. , Naji I. S. ,   Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq, Ramadhan A. A. ,   Department of Physics, College of Science, University of Baghdad, Baghdad, Iraq
Published: October 2023

By using vacuum evaporation, thin films of the (CdS)0.75-(PbS)0.25 alloy have been deposited to form a nanocrystalline composite. Investigations were made into the morphology, electrical, optical and I-V characteristics of (CdS)0.75-(PbS)0.25 films asdeposited and after annealing at various temperatures. According to AFM measurements, the values of grain sizes rise as annealing temperatures rise, showing that the films' crystallinity has been increased through heat treatment. In addition, heat treatment results in an increase in surface roughness values, suggesting rougher films that could be employed in more applications. The prepared films have direct energy band gaps, and these band gaps increase with the increase in the degrees of annealing temperature. Additionally, Urbach energy values decrease with an increase in annealing temperature degrees, indicating a reduction in the tail defects and an enhancement in crystal structure through annealing. The produced films' conductivity raise when temperature in the range (RT-473)K increased, demonstrating that they are semiconducting films. At comparatively lower temperature degrees, the conduction is caused by carriers that are stimulated into localized states at the band edges. At relatively higher temperatures, the conductivity appears to be substantially temperature-dependent. As a result, the conduction mechanism results from carriers being excited into extended states beyond mobility edges. The photovoltaic measurement (I–V) properties, open circuit voltage, short circuit current, efficiency and fill factor of (CdS)0.75-(PbS)0.25 heterostructure cells have been examined under 100mW/cm2 . Interestingly, rising annealing had enhanced photovoltaic cell performances; the solar cell had shown its highest efficiency (0.42%) at 573K. From XRD the structures are polycrystalline with cubic and hexagonal structures indicating that there’s a mix of phases of PbS and CdS, the grain size and intensity raise with annealing temperatures.
Efficient face detection and replacement in the creationofsimple fake videos
Authors: Oleksii I. Sheremet , Oleksandr V. Sadovoi , Denys V. Harshanov , Oleh S. Kovalchuk , Kateryna S. Sheremet , Yuliia V. Sokhina
Published: October 2023

Face detection and facial recognition technologies are among the most intensively studied topics within the field of computervision, owing to their vast application potential across a multitude of industries. These technologies have demonstrated practicalap-plicability in varied contexts such as identifying suspicious individuals in crowded urban spaces, real-time recognition of smartphone owners, creating compelling deepfakes for entertainment applications, and specialized applications that modify the movements of facial features such as the lips or eyes. With the current state-of-the-art advancements in hardware and software technology, today's technological infrastructure provides more resources than are necessary for video streaming. As a result, simpleface recognition systems can be implemented without the need for high-cost server instances that require specified pre-trained models. This abun-dance of resources is changing the landscape of face recognition, and the discussion within this paper will revolve around these emerging paradigms.The primary focus of this article is an in-depth analysis of the key concepts of face detection in streaming video data using prominent pre-trained models. The models under discussion include HRNet, RetinaFace, Dlib, MediaPipe, and KeyPoint R-CNN. Each of these models has its strengths and weaknesses, and the article discusses these attributes in the context of real-world case studies. This discussion provides valuable insights into the practical applications of these models and the trade-offs involved in their utilization.Moreover, this paper presents a comprehensive overview of image transformation techniques. It introduces an ab-stract method for affine image transformation, animportanttechnique in image processing that changes the geometric properties of an image without affecting its pixel intensity. Additionally, the article discusses image transformation operations executed through the OpenCV library, one of the leading libraries in the field of computer vision, providing a highly flexible and efficient toolset for image manipulation.The culmination of this research is presented as a practical standalone system for image replacement in video. This system leverages the RetinaFace model for inference and employs OpenCV for affine transformations, demonstrating the con-cepts and technologies discussed in the paper. The work outlined in this article thereby advances the field of face detectionand recognition, presenting an innovative approach that makes full use of contemporary hardware and software advances
The Psychological and Pedagogical Foundations of the Organization of Creative Activity of Students
Authors:   Novosibirsk State Pedagogical University, Andrienko Elena V.
Published: October 2023

The article reveals the psychological and pedagogical foundations of the creative activity of university students. The object of the analysis of the article were the concepts and theories of creative activity developed in pedagogy and psychology. The purpose of the article is to determine the conceptual psychological and pedagogical ideas of creativity development that are relevant for the organization of students’ creative activity. Some domestic and foreign theories of creativity are characterized, various approaches to the study of creativity as a special type of human creative activity aimed at obtaining a unique result in the conditions of solving a complex task or problem are analyzed. Some psychological and pedagogical approaches to the organization of creative activity of students in the system of higher education are revealed. A brief description of cognitive processes (lateral and divergent thinking) is given. The main psychological and pedagogical conditions for the effective organization of creative activity of university students are determined.
Analysis of the Model of Organizational, Methodological and Personnel Support of Educational Activities in Russian Language in the Peopleʼs Republic of China
Authors:   Novosibirsk State Pedagogical University, Basalaeva Elena G. , Shpilman Marina V. ,   Novosibirsk State Pedagogical University
Published: October 2023

Russian language centers, including centers of Open education in Russian language and Russian language teaching, in the Peopleʼs Republic of China are analyzed in the article. The study of the functioning of the Russian language centers established at different times in the PRC revealed a number of problems that need to be solved. These include the lack of information promotion of education centers in Russian in the media, non-systemic financing of projects, the implementation of the centersʼ activities mainly on the basis of educational organizations in the PRC, the absence of a single governing body that controls and coordinates the activities of the centers, the shortage of Russian language teachers, the need to update methodological materials. The authors outline possible ways to solve problems aimed at improving the efficiency of existing Russian language centers in China and the centers that are in the process of establishing. The article also suggests a draft model of organizational, methodological and personnel support of educational activities in the Russian language in the Peopleʼs Republic of China, including various modules: regulatory, managerial (personnel), organizational and methodological, material and technical, financial and economic, psychological and pedagogical.
Immersive Theatricalization: Art-Pedagogical Technology in Professional Education
Authors:   Novosibirsk State Pedagogical University, Shulga Irina I. , Kapustin Aleksey N. ,   Novosibirsk State Pedagogical University
Published: October 2023

The article examines new opportunities and risks in modern professional education associated with digitalization, as well as the variability of the introduction of immersive theatricalization as part of art-pedagogical activity and its potential from the point of view of preserving the humanistic orientation of education. Immersiveness is presented in the article as an independent technology that includes elements of theatricalization, play and reflection, and provides interactivity in the learning process. The advantages of using immersive theatricalization in professional education are considered: activity in an educational and professional environment as close as possible to the real activity of a future specialist, increased motivation and development of professional and personal capabilities, in particular pedagogical artistry, communicative qualities and organizational abilities. Promising directions for the introduction of immersive theatricalization are identified: special training of teachers, correlations objective competence and subjective assessment of students’ achievements, development of psychophysiological, emotional and cognitive capabilities of future specialists.
Development of the Content of the School Educational Project within the Framework of the Network
Authors:   Novosibirsk State Pedagogical University, Taranova Marina V. , Odinokova Elena V. ,   Novosibirsk State Pedagogical University
Published: October 2023

The article deals with the problems associated with the content of school educational projects in mathematics. The main emphasis is placed on the technology of selecting content for the project. The methods of setting the project problem, structuring the goals and objectives of the project are described. The ways of choosing a project topic are presented. The results of the training seminars, which are held within the framework of the network interaction of the methodical association of teachers of mathematics, are shown. Examples of the content of educational tasks (tasks) are given, by means of which the teacher can bring the student to the choice of the research topic and the formulation of the project tasks. The novelty of the proposed solution lies in the idea of the influence of a systematic approach in structuring the content of research and creative projects. The arguments of the direct influence of the developed system of practices on the effectiveness of the organized project work with schoolchildren are presented.
Verificación de la estructura interna de un cuestionario para el estudio de la discapacidad en la educación superior (CEDES)
Authors: Gerpe Pérez Enelina María
Published: October 2023

La presencia de estudiantes con discapacidad en las aulas universitarias es cada vez más frecuente, lo que implica para las universidades un esfuerzo por abordar cambios en sus tareas diarias. En el presente trabajo se llevó a cabo la validación de un instrumento diseñado para conocer la opinión de los/as estudiantes universitarios/as sobre la inclusión del alumnado con discapacidad en la universidad, el Cuestionario para el Estudio de la Discapacidad en la Educación Superior (CEDES). Se trabajó con una muestra no probabilística, de carácter intencional de 1.934 alumnos y alumnas de grado, y se realizó el cálculo de la fiabilidad y un análisis factorial exploratorio (AFE) del cuestionario objeto de estudio. Los resultados obtenidos muestran que el instrumento es fiable y que su estructura factorial la constituyen 5 factores (marco institucional, accesibilidad, información y orientación, acceso y participación). A partir de los resultados obtenidos se concluye que el cuestionario es una herramienta útil para describir la opinión del alumnado acerca de la atención a la discapacidad en la institución universitaria.
Possible approaches to evaluating the effectiveness of rehabilitation services
Authors:   State institution «Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine», Babov Kostyantyn , Balashova Iryna ,   State institution «Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine», Bezverkhniuk Tetyana ,   State institution «Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine», Kysylevska Olena ,   State institution «Ukrainian Research Institute of Medical Rehabilitation and Resort Therapy of the Ministry of Health of Ukraine»
Published: October 2023

Purpose: the article scientifically substantiates models for assessing the effectiveness of rehabilitation services to ensure the quality of provision of rehabilitation assistance in the healthcare sector at the individual level, at the level of a rehabilitation center/department/institution, and the state level. Material & Methods: an analysis of various approaches to assessing the effectiveness of rehabilitation services is presented, particularly in rehabilitation centers created, among other things, based on sanatorium-resort enterprises. Results: the general principle of evaluating the effectiveness of individual rehabilitation of patients based on the International Classification of Functioning (ICF) is considered. Generally accepted scales are presented that can be used to determine the corresponding category of ICF domains on patients` health status for the purpose of rehabilitation. If generally accepted scales do not match the ICF domains, it is suggested that subscales be used and definitions of quantitative values be provided following the ICF recommendations. As for quantitative characteristics, mainly instrumental, functional, and laboratory, it is also advisable to reduce them to a five-level scale. Based on the expert method, rehabilitation efficiency indicators have been developed at different levels (individual, rehabilitation center/department/institution, or state), which can be applied in different rehabilitation periods. These indicators are presented in the form of “quality trees” (“efficiency trees”). Conclusions: to quantify the effectiveness of rehabilitation, it is proposed to use a qualimetric method, in which individual performance indicators are assessed using points, and the complex indicator is the arithmetic average. The combination of principles for evaluating the effectiveness of individual rehabilitation of patients based on the ICF and the qualimetric method allows us to objectively determine the patient`s rehabilitation potential of, evaluate the effectiveness of rehabilitation measures at different levels and in different periods, and achieve short-term and long-term goals.
Blechnum spicant (Blechnaceae) in the Ukrainian flora
Authors:   Taras Shevchenko National University of Kyiv, Educational and Scientific Centre ", Bezsmertna O.O. ,   Institute of Biology and Medicine",   , Kyiv, Ukraine, Iemelianova S.M. ,   M.G. Kholodny Institute of Botany, National Academy of Sciences of Ukraine, Bondarenko H.M. ,   V.N. Karazin National University of Kharkiv, Svobody Square 4, Kharkiv 61022, Ukraine, Hleb R.Y. ,   Carpathian Biosphere Reserve, Rakhiv, Ukraine, Shtanko Y.O. ,   Taras Shevchenko National University of Kyiv, Educational and Scientific Centre "Institute of Biology and Medicine", Kyiv, Ukraine, Herasymchuk H.V. ,   Tsumanska Pushcha National Nature Park, Kivertsi, Volyn Region, Ukraine, Loiko V.O. ,   Tsumanska Pushcha National Nature Park, Kivertsi, Volyn Region, Ukraine, Babytskiy A.I. ,   National University of Life and Environmental Sciences of Ukraine, Kyiv, Ukraine, Budzhak V.V. ,   Institute for Evolutionary Ecology, National Academy of Sciences of Ukraine, Kyiv, Ukraine, Danylyk I.M. ,   Institute of Ecology of the Carpathians, National Academy of Sciences of Ukraine, Lviv, Ukraine, Merlenko N.O. ,   Tsumanska Pushcha National Nature Park, Kivertsi, Volyn Region, Ukraine, Derkach V.V. ,   Tsumanska Pushcha National Nature Park, Kivertsi, Volyn Region, Ukraine
Published: October 2023

The article contains data about the historical and current distribution patterns of Blechnum spicant (Blechnaceae) in Ukraine. This species is quite common in the Carpathian Mountains but is very rare in other regions of Ukraine. Until recently, there were only two known localities of B. spicant in the Western Forest-Steppe (within the Podolian Upland) and only one in Crimea. We discovered one new locality of B. spicant in the Polissian (Polesian) Lowland, in Volyn Region. The article provides phytosociological and topographic data on the Polissian population. This population consists of two sub-populations, which are located not far from each other. Both of them were found in an immature birch-pine forest aged approximately 20 years, in an area of former agricultural lands. We summarise the data on the general distribution of B. spicant in Ukraine. The article also provides phytosociological, biotopic and populational information on localities of B. spicant.
New floristic finds in the Forest-Steppe part of Zhytomyr Region. Report II
Authors:   Institute of Environmental Geochemistry of the National Academy of Sciences of Ukraine, Orlov O.O. , Shynder O.I. ,   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Kyiv, Ukraine, Kolomiychuk V.P. ,   O.V. Fomin Botanical Garden of the Taras Shevchenko National University of Kyiv, Ukraine
Published: October 2023

Results of floristic investigation in the territory of the Forest-Steppe zone of Zhytomyr Region (Oblast) conducted in 2022 are reported. As a result of the work, it was revealed 11 new plant species for Zhytomyr Region (Alyssum desertorum, Bothriochloa ischaemum, Bromus commutatus, Eremogone procera, Euphorbia stepposa, Festuca rupicola, Fumaria parviflora, Ranunculus rionii, Symphytum caucasicum, Taraxacum serotinum, and Verbascum chaixii subsp. orientale). Also, 11 plant species new for the Forest-Steppe zone of Zhytomyr Region were found, and new localities of 14 rather rare plant species are reported. Their locations are briefly described, and, for the majority of species, phytogeographical comments are provided. Among native species, five are regionally rare in Zhytomyr Region (Anemone sylvestris, Carex humilis, Linum perenne, Phlomoides tuberosa, and Salvia nutans). In addition, highly active plants have been revealed among new alien species, such as Symphytum caucasicum; they require further monitoring. It has been suggested that an important role in migrations of steppe plant species in the region played valley of the Rostavytsia River, a tributary of the Ros’ River, and the system of ancient valleys which forms a common hydrographic network with them.
Teratogenesis of generative organs of cultivars of Rosa (Rosaceae) in the collection of the M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine
Authors:   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Kyiv, Ukraine, Rubtsova O.L. , Vakulenko T.B. ,   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Kyiv, Ukraine, Chyzhankova V.I. ,   M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, Kyiv, Ukraine
Published: October 2023

As a result of the observation of 80 varieties of garden roses in the collection of the M.M. Gryshko National Botanical Garden, National Academy of Sciences of Ukraine, during 2018–2022, 11 types of teratomorphs were identified and documented according to the proposed informal classification scheme. The most common anomalies of the generative organs were categorized as follows: double-flowered morphs (96.25%), petalization of stamens and sepals (55%), phyllody of flower elements (47.5%) and petal chorisis (46.25%). Such manifestations of teratogenesis as proliferation, fasciation and polymerization occur less frequently (10% and 12.5%, respectively). Syncarpy, heteromorphism and oligomerization were observed in a small number of varieties (from 1.25% to 3.75%). Sepal phyllody was found in 15 of the studied varieties, i.e. 39.47% of all records of phyllody of generative organs. The varieties 'Leda', 'Lydia', 'F.J. Grootendorst', 'The Sun and the Heart', 'Duftwolke', 'Souvenir de la Malmaison', 'Laguna' were found to be most susceptible to flower teratogenesis. The results of this research, apart from theoretical implication, can be of some interest for rose breeders.
Technical Considerations for Percutaneous Tricuspid Paravalvular Leak Closure
Authors: Lim Fang Yi , Lee Phong Teck , Ewe See Hooi , Tan Jack Wei Chieh , Lim Soo Teik , Yap Jonathan
Published: October 2023

Tricuspid paravalvular leaks are uncommon and experience with tackling such cases is limited. There are few case reports in the literature and multiple variations in the techniques used. We highlight the step-by-step methods for performing percutaneous closure of tricuspid paravalvular leaks and discuss the important technical considerations for this complex procedure. A case is used as a practical illustration.
Sex and Gender Differences in Aortic Disease
Authors: Huckaby Lauren V , Leshnower Bradley G
Published: October 2023

Dilatation of the thoracic or abdominal aorta can progress to dissection or rupture with significant associated morbidity and mortality. Aortic disease remains a treatable contributor to mortality in the US and its burden is likely underestimated. Recent clinical studies have uncovered sex and gender distinctions in the epidemiology, pathophysiology, and outcomes of aortic disease. Despite this, there has been little progress in the application of these findings to clinical practice. Improved understanding of the sex-specific mechanisms of aortic disease may inform personalized indications for elective repair and thus reduce the morbidity of aortic catastrophe. The objective of this review is to summarize known clinical and biological sex differences in both thoracic and abdominal aortic disease and highlight promising areas for future investigation.
Design, modeling, and experimental evaluation of a self-sealing component for rotary shafts in magneto-rheological fluid devices
Authors: Cuong Vo Van , Nguyen Quoc Hung , Zy Le Hai Zy , Nguyen Ngoc Diep , Tuan Le Duy , Hieu Do Huu Minh , Duyen Do Quy
Published: October 2023

This study focuses on the development and evaluation of a self-sealing component for rotary shafts in Magneto-rheological (MR) fluid-based devices, such as MR brakes and MR clutches. The proposed sealing component, which replaces traditional lip-seals, consists of a permanent magnet and a magnetic core positioned on the rotary shaft. Through a combination of simulation and experimentation, the design and performance of the self-sealing component are investigated. Initially, the research provides an overview of MR fluid and its applications, as well as previous studies on sealing components utilizing MR fluid. Building on this background, a configuration for the self-sealing component specific to rotary shafts in MR fluid-based devices is proposed. The design and modeling of the sealing component are carried out, employing the Bingham plastic rheological model of the MR fluid and finite element analysis techniques. Through finite element analysis, an optimal design for the sealing component is determined. Prototypes of the sealing component are manufactured, and experimental testing is conducted to assess its performance characteristics. The experimental results are then compared with the simulated results, allowing for a comprehensive evaluation of the sealing component's effectiveness.
Effect of carbon fibers (length, dosage) on the Marshall and volumetric properties of HMA mixtures
Authors: Albayati Nadheer , Ismael Mohammed Qader
Published: October 2023

This study investigates the effect of carbon fibers when added to HMA containing recycled concrete aggregate on Marshall properties. It is included to identify the optimum asphalt contents according to the Marshall design method for mixtures containing 20, 40, 60, 80, and 100% coarse recycled concrete replaced with coarse virgin aggregate. Two lengths of 10 and 20 mm of carbon fibers had been added with three percentages of 0.15, 0.25, and 0.35% to the total weight of the mixture. The results showed all mixtures containing recycled concrete aggregate met SCRB 2003 Iraqi standard requirements for wearing coarse type IIIA. Replacement of virgin aggregate by recycled concrete aggregate led to an increase in optimum asphalt contents, in which the maximum increase reached 10.78% over the control mixture when 100% of coarse recycled concrete aggregate was utilized. The Marshall characteristics were altered with carbon fiber, which increased stability. The highest level of stability reached about 38.89% over the control mixture when using 60% recycled concrete aggregate and reinforced by 0.35% carbon fibers had a length of 20mm.
Liderazgo transformacional y clima organizacional en una empresa de tecnología en Lima durante el 2022
Authors: Davila-Moran Roberto Carlos , Agüero-Corzo Eucaris del Carmen
Published: October 2023

El liderazgo transformacional y el clima organizacional son factores fundamentales para el desempeño de las empresas tecnológicas. Sin embargo, hay poca investigación sobre como interactúan estas variables en el sector. El objetivo de este estudio fue analizar la relación entre el liderazgo transformacional y el clima organizacional en una empresa de tecnología. Se utilizó un enfoque cuantitativo transversal, aplicando un cuestionario validado y fiable a los 80 empleados de la empresa. El cuestionario incluyó preguntas sobre inspiración y visión, estimulación intelectual y fomento de la innovación, consideración individualizada y apoyo, y clima organizacional. Se utilizaron técnicas estadísticas como el análisis de correlación de Spearman y el análisis de regresión no lineal para analizar los datos. Los resultados mostraron una correlación positiva y significativa entre el liderazgo transformacional y el clima organizacional (rho = 0.72, p < 0.001). Además, se encontraron correlaciones positivas y significativas entre todas las dimensiones estudiadas y el clima organizacional. El análisis de regresión no lineal confirmó que el liderazgo transformacional explicó el 46.1% de la varianza del clima organizacional (R2 = 0.461, p < 0.000). El estudio demostró que el liderazgo transformacional tiene una relación positiva y significativa con el clima organizacional en la empresa de tecnología estudiada. Se destacó la importancia de la inspiración y visión, estimulación intelectual y fomento de la innovación, consideración individualizada en la creación de un clima organizacional positivo.
A Fuzzy Model for Personnel Risk Analysis: Case of Russian-Finnish Export-Import Operations of Small and Medium Enterprises
Authors:   Peter the Great St. Petersburg Polytechnic University, Kudryavtseva Tatiana Yu. , Skhvediani Angi E. ,   Peter the Great St. Petersburg Polytechnic University, Leukhina Maiia S. ,   Peter the Great St. Petersburg Polytechnic University, Schneider Alexandra O. ,   Peter the Great St. Petersburg Polytechnic University
Published: October 2023

Small and medium enterprises (SMEs) have limited resources for balancing risks which occur during international activities. The main hypothesis tested in this research is that the qualification of employees is the main area of personnel risks in cross–border cooperation. The fuzzy-logic model for personnel risks analysis was developed for quantification of the risks related to international activities. First, different risk factors and their elements were identified and formulated as linguistic variables. Second, with the use of experts’ judgments, a fuzzy logic-based system was constructed and evaluated. Risk level was calculated using MATLAB fuzzy logic toolbox and its factors were ranked accordingly. This model was applied to survey data from SMEs on Russia-Finland import-export operations during the 2020 – 2021 period. The personnel risk related to export-import Russia - Finland operations belonged to the above-average risk levels. Based on a more detailed analysis of risk elements, such elements as personnel development and training had the greatest coefficient and is an obvious high-risk area. The second highest value of the risk coefficient belonged to the element associated with personnel management. The lowest value belonged to elements related to motivation and recruitment processes. Therefore, theoretical contribution of the article is a model which allows us to quantify and identify micro-level personnel related risks in cross-border cooperation and present linguistic interpretation of these risks. This model can be use in practice by managers of specific SMEs or policy makers for obtaining broader and more representative results on risks related to international activities.
Russian Market of Online Microloans to the Population: Credit Risks Analysis
Authors:   Rostov State University of Economics, Evlakhova Yuliya S. , Tregubova Alexandra A. ,   Rostov State University of Economics
Published: October 2023

The credit bubble and the accompanying credit risks in the microfinance market could potentially threaten financial stability, as a crisis in the microfinance market could trigger an influx of high-risk clients into the banking sector. The purpose of the study is to assess the level of credit risk that creates threats of financial instability in the microloan market for the population, including its online segment. The hypothesis of the study is that during periods of crisis there are critical deviations of the key characteristics of the credit risk of the microloan market for the population, including its online segment. An original approach to assessing credit risk in the market of microloans to the population is proposed, which includes: (1) selection of indicators of the microfinance market that characterize credit risk at the macrolevel; (2) exponential smoothing models that make it possible to obtain an estimate of the boundaries of the corridor of acceptable values of market indicators. The information base of the study was the official statistical data of the Bank of Russia on the activities of microfinance institutions. The results of the study made it possible to identify the emergence of several "bubbles" of online microloans in the microfinance market: the largest of them was recorded on March 31, 2021, and was due to an increase in the issuance of both online PDL and online IL microloans, the second largest was recorded on June 30, 2022, and was caused exclusively by the growth of online PDL microloans. It was revealed that the level of credit activity of microfinance organizations shifted from high to moderate, while their credit activity did not provoke an excessive increase in credit risks of the microfinance market. In order to timely prevent crises in the microfinance market, the necessity of monitoring the values of outstanding overdue debts of microfinance organizations and interest arrears on microloans issued online IL is substantiated. The practical significance of the study lies in the possibility of using the results obtained in the prudential regulation of the microfinance market, in assessing the risks of the activities of microfinance organizations and their clients – individual borrowers. The theoretical significance of the study lies in the expanding of the analysis of credit risks in the microfinance market through the study of the segment of online microloans.
Influence of heliogeophysical and climatic factors on the cardiovascular system: a literature review
Authors: Tolstov P. V. , Kalyagin A. N. , Tatarinova M. B.
Published: October 2023

Despite many years of studying the influence of climatic and heliogeophysical factors on the human body, many issues remain unresolved. On the one hand, this is due, to the diversity and complexity in the study of the natural factors themselves, and on the other hand, to the ambiguous influence of the latter on various functional body systems of the studied groups; these groups, in turn, are heterogeneous depending on the studied problem, and, in addition, different statistical methods are not always applied correctly. The review presents an analysis of modern data reflecting the influence of heliogeophysical and climatic factors on the human cardiovascular system. According to the literature, the most significant of the climatic and heliogeophysical factors are such environmental parameters as temperature, atmospheric pressure, and solar activity. Above factors was found to have a strong influence on cardiovascular system, which is expressed in the development stroke, myocardial infarction and sudden coronary death. Changes in external environment parameters increased the number of calls from the population to emergency services, and their impact on the urban and rural population differed. At the same time, the delay in a cardiovascular event with a change in ambient temperature ranged from 1 to 3 days. Solar anomalies and related indices caused an increase in the number of myocardial infarctions and strokes 1-2 days after the anomalies, while an increase in the number of hypertensive crises was noted 3 days before these anomalies. There is a J-shaped relationship between temperature changes and the risk of cardiovascular events, and a V-shaped relationship between atmospheric pressure and mortality from coronary events with a minimum of mortality at an atmospheric pressure of 760 mm Hg. It has also been shown that diabetes mellitus, male sex and older age were significant factors that increase the risk of cardiovascular events with changing weather conditions.
Endumeni and the Parol Evidence Rule: Do They Coexist?
Authors: Wallis Malcolm
Published: October 2023

A recent judgment of the SCA in Capitec Bank Holdings v Coral Lagoon Investments suggested that the parol evidence rule is likely to become a residual rule of little practical importance in view of the expansive approach to interpretation flowing from the judgment in Endumeni and applied by the Constitutional Court in University of Johannesburg v Auckland Park Theological Seminary. The article analyses the court's concern in the light of the two judgments and suggests that it is misplaced. The parol evidence rule is still of full force and effect and evidence inadmissible under the rule is not admissible as context in interpreting contracts.
Application of the modal design method for discrete systems
Authors:   Novosibirsk State Technical University, Russian Federation, Voevoda Alexsander A. , Shipagin Victor I. ,   Novosibirsk State Technical University, Russian Federation
Published: October 2023

Works considering modal synthesis and using polynomial decomposition of transfer functions of object and controller models are considered mainly for continuous automatic control systems. At the same time, in some cases, it is necessary to consider systems of a discrete type. An example of the synthesis of an automatic control system for an accurate positioning of a table driven by a direct-drive motor is given. Such systems provide accurate positioning in the processes of manufacturing and processing of parts. They are used in various fields of industry: medical, aerospace, automotive and others. In particular, the above model of the precise positioning table is used for packaging semiconductor elements. A feature of this example is the representation of the transfer function of the object model in a discrete form and the presence of four-cycle delay links in it. In addition, this model is unstable due to the presence of poles lying on the stability boundary in it. As a synthesis method, a modal method is used, using a polynomial decomposition of the transfer function of the model of the control object and controller. An approach is also demonstrated that makes it possible to reduce the number of calculations in the synthesis of regulators by reducing the order of the transfer function of the considered object model and reducing the number of unknown parameters of the regulator. At the same time, a regulator is obtained that differs from the original one. Various options for choosing the desired poles of the transfer function of a closed system are analyzed. The choice of the desired poles is carried out in favor of reducing the amount of overshoot of the system relative to the transients of the system with the initial choice of poles.
Стабилизация напряжения в высоковольтных преобразователях часто-ты при работе электроприводов газоперекачивающих агрегатов
Authors: Гуляев Игорь Васильевич , Крюков Олег Викторович
Published: October 2023

Введение. Рассмотрена система стабилизации напряжения в звене постоянного тока высоковольтного преобразователя частоты, работающая за счет рекуперации кинетической энергии из электроприводного газоперекачивающего агрегата.
Методы и результаты. Представленная схема позволяет обеспечить устойчивую работу электропривода при провалах напряжения питающей сети и непрерывность технологического процесса. Работа системы основана на автоматическом изменении частоты модулирующего сигнала преобразователя частоты в соответствии с сигналами рассогласования фактического и требуемого значений напряжения звена постоянного тока.
Заключение. Предложенный алгоритм работы наблюдателя напряжений на переключаемых конденсаторах, основанный на измеренных токах статора приводной машины нагнетателя, динамической модели двигателя переменного тока, таблице состояния ключей преобразователя и уравнениях равновесия токов и напряжений, позволяет значительно повысить надежность стабильной работы привода центробежного нагнетателя при колебаниях питающего напряжения.
О правиле Ишлинского и управлении электромеханическими системами высокого порядка
Authors: Ещин Евгений Константинович
Published: October 2023

Введение. Рассмотрена проблема, связанная с колебаниями в электромеханических системах. Отмечено усложнение используемых для описания колебательных процессов в системах их математических моделей, которые обычно являются дифференциальными уравнениями (обыкновенными или в частных производных), как правило, высоких порядков. Затронуты широко известные приемы упрощения и использования математических моделей.

Методы и результаты. Сформулировано утверждение: управление состоянием системы высокого порядка как системой второго порядка может в ряде случаев обеспечить приемлемое качество управления системой высокого порядка. Сделан вывод, что улучшение состояния сложных систем путем синтеза их систем управления на основе простых моделей движения возможно. С целью определения упрощенной структуры системы управления рассмотрена задача оптимального управления объектом второго порядка. Для реальных систем более высокого порядка (асинхронных электродвигателей) определена возможность использования структуры системы управления объектом второго порядка. Проанализированы результаты введения управления электроприводами с асинхронными электродвигателями различных мощностей с математическими моделями до 29-го порядка.

Заключение. Показано, что управление системой высокого порядка как системой второго порядка  может в ряде случаев обеспечить приемлемое качество управления системой высокого порядка.