bluuebunny/crossref_metadata_2025 huggingface dataset:
The relationship between the application of different learning techniques and teaching models and the school success of students
Authors: Antonijević Radovan , Radenović Dragana
Published: January 2023

The subject of this research is the connection between the the application of different learning techniques and teaching models and the school performance of students in the field of mathematics and Serbian language. The aim of the research is to identify the basic characteristics of the connection between contextual factors of school environment regarding the application of different learning techniques and teaching models and school success of students in the field of mathematics and Serbian language. Six hundred seventh grade students participated in the research. A descriptive method was used, and data were collected using a scaling technique. The results show that the greater application of different teaching models and techniques of learning in the class, the higher is the grade in mathematics and Serbian language. The emphasis is on effective management of the learning process by the teacher.
Historical genesis of the concept of number and number systems: Possibilities of application in the initial teaching of mathematics (II)
Authors: Gordić Snežana , Lazić Bojan , Milošević Marina
Published: January 2023

The history of mathematics and its discoveries have a significant role in the modern teaching of mathematics because they increase the motivation and interest of students in the subject. This paper aims to consider the possibilities of its application in practice based on a brief overview of existing research on the use of the history of mathematics in mathematics teaching. Examples of tasks related to the history of natural numbers and number systems that can be applied in the initial teaching of mathematics are presented. In the conclusion of the paper, an overview of number systems through history is summarized (Part I, NORMA XXVII, 1/2022), with special reference to the importance of positional number system, i.e. the advantages of the Indo-Arabic system, with recommendations for introducing these contents in elementary mathematics
Difficulties in learning reading and writing in children with apraxia of speech
Authors: Simić Ljiljana , Kerkez Jelena , Jankelin Isidora , Matić Ivana
Published: January 2023

Mastering the skills of reading and writing encourages intensive lexical development that enriches the ability to speak and write. The presence of a delay or an identified speech and/or language disorder at an early age affects the outcome of learning these skills. The aim of this paper is to familiarize readers with the characteristics of apraxia of speech and to draw attention to the difficulties these children exhibit in the process of learning to read and write. Apraxia of speech represents a difficulty in planning and programming the position of the speech organs that are required for the production of speech sounds. For a long time it was believed that this was exclusively a motor speech disorder. New findings changed the aspect of observing this disorder where language disorders were also identified in these children. The primary reason for children with apraxia of speech having difficulty acquiring reading and writing is a delay in the development of phonological awareness, which is known to be the basis of the language system for learning academic skills. Research dealing with the characteristics of written language in children with apraxia of speech is scarce, especially in the Serbian language. A review of the available literature found an emphasis on the presence of language barriers that are assumed to hinder the acquisition of these skills, which subsequently results in poorer academic performance.
Oropharyngeal dysphagia in elderly persons: Etiology, pathophysiology and symptomatology
Authors: Petrović-Lazić Mirjana , Babac Snežana , Ilić-Savić Ivana
Published: January 2023

Swallowing disorders can occur at any age, although they occur more often in old age when the physiology of swallowing changes due to aging. Oropharyngeal dysphagia is a very common clinical condition affecting 13% of the total population over 65 years of age and 51% of institutionalized older people. Given that oropharyngeal dysphagia can lead to increased morbidity and mortality in the elderly, it is necessary to prevent the occurrence of dysphagia in this population group as much as possible. In relation to this, the paper aims to provide insight into contemporary research into the etiology, pathophysiology, and symptomatology of oropharyngeal dysphagia in the elderly. In this review study, the electronic databases of Google Scholar Advanced Search and the Consortium of Serbian Libraries for Unified Procurement - KoBSON were searched. The following keywords and phrases were used in the search: swallowing, dysphagia, oropharyngeal dysphagia, aging, age and dysphagia, etiology of oropharyngeal dysphagia, the clinical picture of oropharyngeal dysphagia, pathophysiology of oropharyngeal dysphagia. This systematic review and meta-analysis of papers showed significant progress in the effective diagnostic approach of oropharyngeal dysphagia during the last years but also a significant lack of knowledge about adequate modifications of drugs applied during the treatment of patients with dysphagia. A good understanding of the etiology, pathophysiology, and symptomatology of oropharyngeal dysphagia would eliminate the harmful effects of pharmacological substances on the function of swallowing, given that the elderly, on the advice of a doctor, use them daily.
The cornea and methods for measuring intraocular pressure
Authors: Jordanova Elena , Hentova-Sencanic Paraskeva , Marjanović Ivan , Senčanin Ivan , Stefanović Ivana , Baralić Marko
Published: January 2023

Introduction: The study aimed to assert the relationship between central corneal thickness (CCT) and intraocular pressure (IOP) measured by: Goldmann applanation tonometry (GAT) and Dynamic contour tonometry (DCT). Materials and Methods: The study included 150 patients with a mean age of 59.39 ± 13.12 years. Patients were divided into three groups: 50 primary open-angle glaucoma (POAG) patients, 50 ocular hypertension (OHT) patients, and 50 normal tension glaucoma (NTG) patients. IOP was determined using GAT and DCT. CCT was measured by ultrasound pachymetry. Results: IOP measured with DCT was higher than IOP measured with GAT (19.80 ± 3.67 mmHg vs 17.71 ± 3.35 mmHg). A significant positive association between IOP measured with GAT and IOP measured with DCT was found in all patients (r = 0.867, p < 0.01). A significantly positive association between IOP measured with GAT and IOP measured with DCT in POAG (r = 0.855, p <0.01), OHT (r = 0.826, p < 0.01), and NTG patients (r = 0.832, p < 0.01) were found. A significant positive correlation between CCT and IOP measured with GAT (r = 0.198, p < 0.01), as well as a significant positive correlation between CCT and IOP measured with DCT was found (r = 0.198, p < 0.01) in all patients. There was no correlation between CCT and IOP measured neither with GAT nor with DCT separately in three patient groups (p > 0.05). Conclusion: CCT-influenced IOP was measured by both methods, GAT and DCT. DCT can not replace GAT, but it is very useful, especially in cases where errors are in the IOP GAT measurement.
Retraction: The effect and importance of extrahepatic bile duct anatomy variations in the etiology of holedocholithiasis (Sanamed. Online First, October 2022, DOI: 10.5937/sanamed0-40131)
Authors: Sönmez Süleyman , Bozdağ Emre , Cingöz Mehmet , Cingöz Eda , Vugar Samadli
Published: January 2023

This paper is retracted at the request of the authors due to the potential existence of a conflict of interest and disagreements between the authors and the head of the department where the research was conducted, regarding the holder of the authorship.
Erratum: Comparison of cardiac magnetic resonance and cardiac ultrasound imaging findings in congenital and acquired heart diseases (2020, vol. 15, br. 2, str. 115-20, doi:10.24125/sanamed.v15i2.418)
Authors: Serinsoz Serdar , Akturk Remzi , Bayramoglu Sibel
Published: January 2023

The authors of this paper informed us about the existence of an error. Remzi Akturk has been listed as a co-author in this article. In order to prevent ethical issues, all authors of this article agreed that he should be listed as a guest author instead of co-author because he did not contribute in data collecting. Because of that, the name Remzi Akturk is removed from the author's list in this article. All authors send a signed agreement that the name of Remzi Akturk must be removed from the author's list. According to this, the list of the authors on pages 115 and 119 "Serdar Serinsoz, Remzi Akturk, Sibel Bayramoglu" should be replaced with: "Serdar Serinsoz, Sibel Bayramoglu"
Morphological characteristics of the plant and reproductive capacity of yarrow (Achillea millefolium L.) seeds in dependence on pedo-ecological conditions
Authors: Filipović Vladimir , Ugrenović Vladan , Dimitrijević Snežana , Mrđan Snežana , Prijić Željana , Popović Vera , Paunović Danica
Published: January 2023

The paper analyzes the influence of soil type and its agrochemical characteristics on the morphological and productive parameters of different yarrow (Achillea millefolium L.) populations. At 8 locations the following fertility parameters were analyzed: pH (H2 O), pH (KCl), CaCO3 (%), humus (%), total N (%), available P2 O5 and K2 O (mg 100 g-1 soil). From the morphological parameters, the following were measured: plant height, number of leaves, number and diameter of the head, from the productive parameters, the fresh above-ground masses per plant, the fresh above-ground masses and seeds yield per hectare and the harvest index were analyzed. Among the quality parameters of yarrow seeds, germination energy, total germination and weight of 1,000 seeds were examined. The largest number of heads (13.6), a diameter of heads (1.9 cm) and seed yield (386.0 kg ha-1) had the population of yarrow from the location Pančevo (Am1). In this variant, seeds with the highest germination energy (48.8%) and total germination (53.4%) were obtained. The population in this locality was in second place in fresh above-ground masses yield (15,604.0 kg ha-1). The highest fresh above-ground masses yield per hectare, was obtained in variant Am5 (location Starčevo "rit"). The lowest values of morphological and productive parameters and the weakest quality of seeds were found in the yarrow plants originating from soils with less natural fertility and soils located in urban areas.
Stability of grain yield performance of winter wheat genotypes
Authors: Perišić Vladimir , Perišić Vesna , Luković Kristina , Bratković Kamenko , Zečević Veselinka , Babić Snežana , Matković-Stojšin Mirela
Published: January 2023

Bread wheat is one of the most represented field crops whose level and stability of yield is very important for the food security in Republic Serbia. In the paper was investigated stability of yield expression of 15 winter bread wheat genotypes in different agroecological conditions of Serbia, using the Additive main effects and multiplicative interaction (AMMI) model and GGE-biplot method of analysis. Aim of investigation was to determine which of applied analysis is superior in identification of the most desirable genotypes for cultivation in given environments. Analysis of variance showed that genotype and genotype-environment (G×E) interaction represent highly significant sources of variability in expression of grain yield. AMMI and GGE analyses were point out similar results and an indisputable conclusion is that multienvironment trials, besides routine usage of analysis of variance, must be analized with one of this two models, which combine analysis of variance and PCA analysis. AMMI analysis is simpler for interpretation and closer to the concept of view of the agronomical trial, while GGE analysis is more complex and gives more precise interpretation of "which-won-where", i .e. for defining of narrowly adapted genotypes in given environments. Thus, G11 as the genotype with highest average yield is narrow adapted to the environment Sombor and can be recommended, as well as in the environment 2 (Kruševac), while genotypes with modest requests (G2) rather can be recommended for cultivation in the environment 1 (Kragujevac), which is characterized by less fertile soil and a smaller amount and uneven distribution of precipitation.
Genetic gain in grain yield and main agronomic traits of winter wheat during the past 90 years in Pannonian plain
Authors: Dražić Tanja , Jocković Bojan , Momčilović Vojislava , Aćin Vladimir , Mikić Sanja , Mirosavljević Milan
Published: January 2023

This study aimed to quantify the changes in grain yield and main agronomic traits in winter wheat cultivars registered during the past 90 years . A field trial with 18 winter wheat cultivars registered from 1930 to 2016 was conducted at the experimental field Rimiski šančevi during two growing seasons . The following agronomic traits were measured: grain yield, stem height, spike length, heading date, hectolitre mass, 1000 grain weight, and grain number per unit area . The results of this study showed that there was a significant genotypic effect on the studied traits . Du-ring the past 90 years, grain yield increased at rate of 50 kg ha -1 per year of cultivar release . Grain yield improvement was followed by stem height decrease (0 .4 cm per year of cultivar release) and earlier heading date in modern cultivars, which were 7 -8 days earlier than the older ones . Modern wheat cultivars were characterized by a higher grain number per unit area than the ol-der ones while during the past 90 years, the 1000 grain weight was not significantly related to the year of cultivar release . Further grain yield improvement should be related to a further increase of grain number per unit area while maintaining a higher 1000 grain weight.
Phytostimulatory effect of bacterial strains on oiled flax and black cumin cultivation
Authors: Dimitrijević Snežana , Filipović Vladimir , Milić Marija , Dimitrijević-Branković Suzana , Buntić Aneta , Ugrenović Vladan , Popović Vera
Published: January 2023

In order to examine the influence of plant growth stimulating bacteria, which belong to the genus Streptomices sp., Paenibacillus sp. and Hymenibacter sp., on the yield and seed quality of linseed and black cumin, as well as on the morphological characteristics of these plants, a two-year field experiments were conducted. Soil treatment with a mixed culture of bacteria of different concentrations was applied during the sowing of plants. Before sowing, the influence of individual strains on the germination index of linseed and black cumin was examined. Based on the results presented in the paper, the strains CKS1 - Paenybacillus chitinolyticus, CKS3 - Hymenobacter sp., and CKS7 - Streptomyces fulvissimus, gave germination index values GI over 100% in linseed, within all tested concentrations, while in black cumin, such an effect was shown only by strain CKS7. The positive effect of the bacterial preparation in both examined plant species was recorded by measuring the yield of seeds per hectare treated with a lower concentration of the bacterial preparation compared to the corresponding untreated samples (control sample). A significant difference was recorded by measuring the number of cocoons in samples of treated linseed compared to untreated ones, as well as the mass of roots of both treated plant species. Also, the highest overall germination compared to the control was achieved by the linseed variant L2 in the treatment with a lower concentration of bacteria of 98.3±1.4%.
Detection of high-risk HPV genotypes using Real-time PCR
Authors: Gospodinović Hristina , Pavlović Ljiljana , Obradović Marija , Dimitrijević Sanja , Jovanović Sofija , Grego Edita
Published: January 2023

Discovery of the causal relationship between the human papilloma virus and cervical cancer formation increased the significance of the real-time PCR in HPV diagnostics. Based on evidence showing that they caused cervical cancer, 14 HPV types have been classified as carcinogenic (HPV16, 18, 31, 33, 35, 39, 45, 51, 52, 56, 58, 59, 66 and 68). This study analysed cervical smears taken from female patients, aged 19 to 25 years, using the Viasure diagnostic test for the detection of high-risk HPV genotypes and individual identification of HPV genotypes 16 and 18. A total of 110 cervical smears were analysed and 44 positive samples were detected (40%). DNA analysis of the positive samples found the following distribution of the HPV types: 27% HPV (31, 39, 56); 22% HPV (52, 59, 68); 18% HPV16; 13% HPV (33, 45, 51); 12% HPV (35, 58, 66); 8% HPV18. This study and the high positivity rate it found indicate that there is a lack of awareness among the youth on the measures of prevention, as well as a lack of understanding of HPV infection.
Case report of brain injury in multisystem inflammatory syndrome caused by SARS-CoV-2
Authors: Samitova Elmira , Osmanov Ismail , Antsupova Margarita , Šipulina Olga , Mazankova Lyudmila , Ploskireva Antonina , Voronin Evgenij , Akimkin Vasiliij
Published: January 2023

Background: COVID-19 pandemic has been ravaging since December 2019, however comprehensive standards for therapy have emerged relatively recently. Furthermore, considering multisystem disorders and various clinical manifestations of SARS-CoV-2, a personal approach to each patient is required. We searched databases including PubMed, Scopus, Google Scholar, Medline, and Elibrary and found no case study on meningitis caused by SARS-CoV-2 in children, so our analysis might be accepted as a unique clinical case of acute hydro meningitis associated with multisystem inflammatory syndrome (MIS) in a 10-year-old child with a severe form of SARS-CoV-2. Since SARS-CoV-2 is reported to mediate neurological pathology and acute brain injury, this case report suggests a potential treatment option. Therefore, we would like to present our analysis of a new case of SARS-CoV-2 patient, who was characterized by acute damage to central nervous system (CNS) and severe meningitis. During hospitalization the patient showed severe meningitis coincident with 75% acute lung damage. The patient presented with neutrophilia, an increase of plasma C-reactive protein (CRP), interleukin-6 (IL-6), elevated levels of enzymes (LDH, AST and ALT) and moderate signs of DICS (D-dimer, thrombocytopenia). The patient was found SARS-CoV-2 positive by RT-PCR analysis of patient's cerebrospinal fluid (CSF) sample. Patient was comprehensively treated by combination of antiviral, antibacterial and supportive therapy, and finally discharged 22 days after admissions. Conclusion: SARS-CoV-2 infection in children may result in severe damage to the CNS and the development of meningitis. This observation is in line with all-cause dementia (ACD) occurrences in adults and suggests a conduction of an early RT-PCR COVID-19 test for CSF for patients with meningitis symptoms.
Čitalačke prakse kao strategija podrške đaka na dugoročnom lečenju
Authors: Alekseevna Almazova , Igorevna Adamjan , Igorevna Adamjan , Borisovna Kolosova
Published: January 2023

Danas se aktivno raspravlja o pitanjima vezanim za načine i pristupe inkluziji ëaka na dugoročnom lečenju u obrazovnu sredinu zajednice dece i odraslih. U Ruskoj Federaciji se dinamično razvija mreža bolničkih škola, koja se ostvaruje po modelu projekta "Učim Znaem". U obrazovnim ustanovama se koriste hibridne forme vaspitnog rada sa decom, koja se zbog zdravstvenog stanja školuju kod kuće. Pojavljuju se, takoëe, nezvanične zajednice dodatnog obrazovanja koje razraëuju programe za obolelu decu. Zato je posebno aktuelno proučavanje različitih strategija pedagoške podrške, uključujući korišćenje čitalačkih praksi. Ovaj rad je posvećen analizi i generalizaciji pedagoškog iskustva takve upotrebe u nestandardnoj obrazovnoj sredini (u medicinskom stacionaru i slično). Razmotrena je delatnost različitih bolničkih škola - ruskih, američkih, britanskih, kao i rad zajednica dodatnog obrazovanja i vanškolskog rada srednjih i osnovnih škola u Ruskoj Federaciji. Metodologija istraživanja je aksiološki pristup, koji dozvoljava da se analizira obrazovna delatnost iz ugla humanističkih vrednosti i smisla. Izdvojene su posebne karakteristike korišćenja metoda i prijema, pedagoških tehnologija koje dozvoljavaju organizovanje dečjeg čitanja školaraca u uslovima dugog lečenja. Na osnovu sprovedene analize, predlažu se konkretni načini čitalačkih praksi, razvoj funkcionalne pismenosti, osmišljavanje planova čitanja uzimajući u obzir posebne potrebe ove kategorije učenika.
The specificities and characteristics of the offence of endangering road traffic safty and police action regarding this offense
Authors: Đekić Aleksandar
Published: January 2023

In modern society, traffic represents one of the basic human needs. Traffic is a daily human activity, which is reflected in the change in the position of people, things or messages. The goal of the state is to establish a favorable state of security, and therefore traffic safety, in other words, to establish traffic with as few negative effects as possible. On the other hand, to regulate and improve road traffic safety, road traffic laws have been enacted. Traffic laws regulate the basis of development and participation in road traffic, including road traffic offenses as basic forms of traffic unsafety. Violations of traffic regulations result in certain consequences and even have an impact on the life, health and physical integrity of road traffic participants or the occurrence of material and non-material damage. Therefore, in order to increase the level of road traffic safety, the modern legal system envisages protection of road traffic in misdemeanor and criminal laws. This paper addresses the criminal law protection of road traffic through the prescription of the offense of endangering road traffic safety, the specificities and characteristics of the same offense in relation to other offenses and police practice in cases involving this criminal offense.
The Tragedy of the Quaker Hero as a Reflection of the Crisis of Spiritual Life in Theodore Dreiser's novel "The Bulwark"
Authors: Demina Olesia
Published: January 2023

The subject of the research in this article is the peculiarities of the coverage of the problem of the religious crisis with the United States at the turn of the XIX-XX centuries in the work of one of the most famous realist writers, Theodore Dreiser. He depicted in detail in his works various aspects of the life of Americans of this period, including the religious aspect. The religious crisis in American society is closely connected with the destruction of the ideological ideals of the past. In the artistic heritage of Theodore Dreiser, one can single out a whole system of images, with the help of which he showed the crisis of the religious and moral component of the spiritual life of American society of this period. The scientific novelty of the research is determined by the need to consider the religious aspect in the writer's creative heritage, which for various reasons often fell out of the field of view of earlier critical works. The purpose of the presented work is to study the artistic images in Theodore Dreiser's novel "The Bulwark" in a religious and moral way as a manifestation of the spiritual crisis common to Americans of that time. The following conclusions were presented during the study: 1) Theodore Dreiser is a witness to the crisis in the spiritual and moral life of the USA at the turn of the XIX-XX centuries, which is one of the main themes of the writer's creative heritage; 2) This crisis is connected with the destruction of the fundamental ideological categories of American society (the "great American dream"); 3) In the novel "The Bulwark" T. Dreiser examines the moral and religious picture of American society on the example of the Quaker-Barnes family. He depicts the collapse of religious beliefs in the perception of both the older generation and the younger; 4) The beginning of the XX century was a transitional period. When the forcible imposition of religious norms became a tragedy for many young people; 5) The new age requires new forms of interaction between man and religion.
Problems of Differentiation of Components of Phraseological Synonymy in the Ingush Language
Authors: Kieva Zufira Khadzhibikarovna
Published: January 2023

This article examines the synonymy of phraseological units of the Ingush language as one of the types of systemic relations. The choice of the chosen problem is dictated by insufficient knowledge of idioms associated with synonymous categorical relations in this field of knowledge. On the basis of the component analysis of the units of the synonymic series, phraseological units that enter into the relations of synonymy are analyzed. The relevance of this study lies in the fact that in Ingush phraseology, phraseological synonymic relations are insufficiently studied, the types of phraseological synonymy according to semantic and stylistic principles are not covered. The author examines in detail one of the types of systemic relations – synonymy of phraseological units of the Ingush language, which have not been the subject of special study in works on phraseology. The main conclusions of the study are that phraseological synonyms are united by a common meaning and, at the same time, differ in semantic shades and images, belong to the same grammatical class, combine structural, semantic, stylistic characteristics in the process of functioning. We are interested in the interpretation of synonymous relations between phraseological units of various types in the Ingush language. The article attempts to determine the scope of the concept of a phraseological synonym in the Ingush language and to identify the characteristic features of the functioning of idioms as part of a synonymic series; to systematize the types of phraseological synonymy on semantic and stylistic grounds; to consider the characteristic features of the functioning of idioms as part of a synonymic series.
Representation of the Concept of FAITH/IMAN in Russian-language Religious (Islamic) Discourse
Authors: Magomedova Patimat Aripovna , Gasanova Marina Ayubovna
Published: January 2023

The article considers the concept of FAITH/IMAN as a key component of the religious worldview of Dagestanis. The value component of the analyzed concept, its specifics of verbalization and its role in the Russian-speaking Islamic discourse are determined. The relevance of the proposed topic is determined by the increased interest of scientists in recent decades to the problems of the relationship between language and religion (as evidenced by the emergence of a young science of theolinguistics); on the one hand, the prospects and relevance of research in the field of cognitive linguistics and linguoculturology. The material for the analysis was the paremiological units of the Arabic and Dagestan languages (in Russian translation), Quranic sayings, hadiths, religious texts of theologians, etc. The paper uses linguoculturological (conceptual) analysis as the main one. Since the subject of the study is particularly complex and multifaceted, a number of interdisciplinary methods and techniques are used in the study, including hermeneutic and partially phenomenological methods in analyzing the content of religious texts. The linguistic and cultural analysis of the religious concept of FAITH/IMAN in the Dagestan linguistic and cultural space has revealed the key dominants that have absorbed the ideas about the qualities of a true believer, which generally correspond to universal moral ideals. The specificity of Dagestan religious discourse lies in its syncretic nature, in which the canons and moral and ethical norms of Islam were synthesized with pre-monotheistic beliefs.
Genre Specifics and Artistic and Stylistic Features of Ingush Lullabies
Authors: Kostoeva Aishat Magometovna
Published: January 2023

The article examines the lullabies of the Ingush people in order to determine their genre specifics and artistic and stylistic features. The author analyzes the lyrics in detail from the point of view of the use of visual and expressive means in them - epithets, comparisons, metaphors, etc. Special attention is paid to the importance of this genre in the upbringing of children. Since ancient times, the Ingush have treated children and the elderly with special care. They were considered more unprotected, vulnerable and weak people. The task of adults was to protect them in every possible way. From the very birth of the child, the mother takes care of him, educates, worries about his fate. Careful attitude to the child, love, care, anxiety for the future, the state of mind of the mother, her spiritual world, thoughts, feelings – all very vividly reflected in lullabies. The main conclusions of the study are that the moral education of the younger generation, which to a certain extent depends on lullabies, is of great importance for the future of the people. The main task of lullabies, their main purpose is to put to sleep, calm, lull the child to sleep. The novelty of the research lies in the fact that lullabies are presented as a genre in which the people's desire to create a moral and aesthetic ideal of a person is expressed. Lullabies are also characterized as a lyrical genre of folklore, to determine their genre features and to identify artistic and stylistic means. A special contribution of the author to the study of the topic is his attempt to determine the antiquity of the origin of the genre and its significance in the upbringing of children.
The Concept in the Cognitive-Synergetic Aspect
Authors: Latiypova Yuliya Alfritovna , Spodarets Oksana Olegovna , Vorob'eva Ol'ga Vladimirovna
Published: January 2023

The article considers the concept from a cognitive-synergetic standpoint. The concept is an open, dissipative, non-linear, fractal structure, the development of which is based on the law of spiral fractality and self-similarity. The concept evolves according to the recursive principle, goes in a circle, returning to the starting point on a new round of evolution. The origin of the concept is based on both external necessity and internal need. By the formation of a concept we mean its transition from the mental area, to the language area, and then to the speech area. The concept arises in consciousness in the form of a virtual image as a result of perceptual perception of reality, and is updated, stored in the language and embodied in speech. The concept strives for perfection, but never reaches it, reaching its peak, it starts the process of evolution again in new conditions.
The Epistemological Side of Ontology
Authors: Marsonet Michele
Published: January 2023

Is it possible to draw a border line between ontology and epistemology? A positive answer to this question looks attractive, mainly because it reflects convictions deeply entrenched in our common sense view of the world. However, anyone wishing to clarify the distinction between the ontological and the epistemological dimensions meets problems. This is due to the fact that the separation between factual and conceptual is not clean, but rather fuzzy. It is certainly correct to state that science means to offer correct information about the world, but the extent to which it succeeds in accomplishing this task is always questionable. We cannot claim that the picture provided by today science - our current scientific image of the world - is absolutely correct, because the history of science itself shows us that any such statement is likely to be rejected by future generations. While it may be recognized that science purports to offer a correct description of the real world, the past experience should also prompt us to accept its claims sub condicione, and to view them as merely provisional.
Giant and tunable Rashba spin splitting and quantum spin Hall effect in H-Pb-Cl
Authors: Xue Wen-Ming , Li Jin , He Chao-Yu , Ouyang Tao , Luo Chao-Bo , Tang Chao , Zhong Jian-Xin ,   School of Computational Science and Electronics, Hunan Institute of Engineering, Xiangtan 411104, China,   School of Physics and Optoelectronics Engineering, Xiangtan University, Xiangtan 411105, China
Published: January 2023

Rashba spin splitting and quantum spin Hall effect have attracted enormous interest due to their great significance in the application of spintronics. According to the first-principles calculation, we propose a two-dimensional hexagonal lattice material H-Pb-Cl, which realizes the coexistence of giant Rashba spin splitting and quantum spin Hall effect. Owing to the break of space inversion symmetry and the existence of intrinsic electric field, H-Pb-Cl has a huge Rashba spin splitting phenomenon (αR = 3.78 eV·Å), and the Rashba spin splitting of H-Pb-Cl(–16%—16%) can be adjusted by changing the biaxial stress. By analyzing the electronic properties of H-Pb-Cl, we find that H-Pb-Cl has a huge band gap near the Fermi surface (1.31 eV), and the topological invariant Z2 = 1 of the system is caused by the inversion of s-p orbit, which indicates that H-Pb-Cl is a two-dimensional topological insulator with a huge topological band gap, and the gap is large enough to observe the topological edge states at room temperature. In addition, we further consider the effect of BN and graphane substrates on the topological band gap of H-Pb-Cl by using the H-Pb-Cl (111)-(1×1) /BN (111)-(2×2) and H-Pb-Cl(1×1)/ graphane (2×2) system, and find that the lattice mismatch between H-Pb-Cl (5.395 Å) and BN (2.615 Å) and between H-Pb-Cl (5.395 Å) and graphane (2.575 Å) are about 3% and 4.5%, respectively. According to our calculation results, H-Pb-Cl still retains the properties of topological insulator under the effect of spin orbit coupling, and is not affected by BN nor graphane. Our results show that the nontrivial topological band gap of H-Pb-Cl can be well preserved under both biaxial stress effect and substrate effect. In addition, H-Pb-Cl can well retain the nontrivial topological band gap under the stress of –16%–16%, and thus there are many kinds of substrate materials used to synthesize this material, which is very helpful in successfully realizing preparation experimentally. Our research provides a promising candidate material for exploring and realizing the coexistence of Rashba spin splitting and quantum spin Hall effect. And the coexistence of giant Rashba spin splitting and quantum spin Hall effect greatly broadens the scope of potential applications of H-Pb-Cl in the field of spintronic devices.
Propagation of acoustic wave and analysis of borehole acoustic field in porous medium of heterogeneous viscous fluid
Authors: Peng Fan , Zhang Xiu-Mei , Liu Lin , Wang Xiu-Ming ,   State Key Laboratory of Acoustics, Institute of Acoustics, Chinese Academy of Sciences, Beijing 100190, China,   University of Chinese Academy of Sciences, Beijing 100049, China,   Beijing Engineering Research Center of Sea Deep Drilling and Exploration, Beijing 100190, China
Published: January 2023

Sound field in fluid-saturated porous medium is closely related to the viscosity of fluid and the heterogeneity of porous medium. In order to improve the physical mechanism of wave propagation in porous medium and expand its application in borehole acoustic field, the shear stress of porous fluid and the heterogeneity of pore structure are considered. The wave theory in porous medium containing viscous fluid is deduced based on the Biot theory. The influence of porous medium parameters on slow shear wave is analyzed, and the dispersion and attenuation of elastic wave caused by shear stress balance in porous fluid under the influence of inhomogeneous pore structure are studied. The analytical solution of borehole acoustic field in porous medium containing viscous fluid is further derived. The phase velocity and attenuation of borehole mode waves in heterogeneous porous medium, and the waveform of borehole full wave are calculated. The influence of pore fluid viscosity on borehole full wave is analyzed. The results show that there are slow shear waves in the porous medium containing viscous fluid. The slow shear wave is characterized by low velocity and large attenuation. In heterogeneous porous medium, the balance process of shear stress related to slow shear wave not only leads to the dispersion and attenuation of fast P-wave, but also affects the propagation characteristics of borehole pseudo Rayleigh wave and Stoneley wave. In addition, the pore fluid viscosity has a great influence on the borehole Stoneley wave. The present work improves the physical mechanism of acoustic wave propagation in porous medium and provides theoretical guidance for the explanation and application of borehole acoustic waves in porous formations.
Exotic states in moiré superlattices of twisted semiconducting transition metal dichalcogenides
Authors: Tang Yan-Hao ,   Interdisciplinary Center for Quantum Information, Zhejiang Province Key Laboratory of Quantum Technology, Department of Physics, Zhejiang University, Hangzhou 310063, China
Published: January 2023

Moiré superlattices formed by van der Waals materials with small lattice mismatch or twist angle open an unprecedented approach to generate flat bands that don’t exist in the “parent” materials, which provides a controllable platform for exploring quantum many body physics. Owing to the wide angle range for the existence of flat bands, as well as the valley-spin-locking band structure and the excellent optical properties, twisted semiconducting transition metal dichalcogenides (TMDs) heterostructures have recently attracted lots of attention. In this review, we discuss the exotic states discovered in the twisted TMDs heterostructures, including Mott insulator, generalized Wigner crystals, topological non-trivial states, and moiré excitons, how to manipulate these exotic states and related mechanisms, and finally some perspectives on the opportunities and challenges in this field.
Modulation of non-adiabatic alignment of N2 molecule by femtosecond laser pulses
Authors: Zheng Yue , Zhang Yu-Xuan , Sun Shao-Hua , Ding Peng-Ji , Hu Bi-Tao , Liu Zuo-Ye ,   School of Nuclear Science and Technology, Lanzhou University, Lanzhou 730000, China
Published: January 2023

The alignment of molecules in the femtosecond laser field induces the refractive index of the propagation medium to change, resulting in the spectral modulation effect. In this paper, the time evolution of the wavelength offset of a probe laser pulse under the influence of the non-adiabatic molecular alignment and Kerr effect is measured experimentally by the pump-probe method in nitrogen medium, and the alignment degree of N2 molecules is obtained. By solving the time-dependent Schrödinger equation theoretically, the expression of the degree of molecular non-adiabatic alignment is obtained, and the time evolution of non-adiabatic alignment of N2 molecules is calculated. Taking into account the combined influence of the non-adiabatic molecular alignment and Kerr effect on the change of refractive index of the propagation medium, the modulation effect of birefringence on the spectrum of the probe pulse is achieved. The experimental result accords well with the theoretical calculation, demonstrating that the spectral modulation results obtained by experimental measurement can be used to characterize the alignment degree. Further, the double pulse pump method is used to control the degree of molecular alignment. It is found that the degree of molecular alignment can be enhanced by the double pulse pump method. Moreover, by adjusting the delay time between the two pump laser pulses, that is, adding the second pump laser pulse at one rotational period and half rotational period, respectively, the enhancement and loss of the alignment of N2 molecules can be achieved, which is named the “alignment switch” effect. The molecular alignment control induced by the double pulse pump method can also be applied to the other molecular systems with different alignment and anti-alignment times, such as CO2 molecules and O2 molecules, indicating that the double pulse pump method can be used universally.
Bilayer network spreading dynamics driven by community structure and activity
Authors: Shen Li-Feng , Wang Jian-Bo , Du Zhan-Wei , Xu Xiao-Ke ,   School of Computer Science, Southwest Petroleum University, Chengdu 610500, China,   School of Public Health, The University of Hong Kong, Hong Kong 999077, China,   Computational Communication Research Center, Beijing Normal University, Zhuhai 519087, China,   School of Journalism and Communication, Beijing Normal University, Beijing 100875, China
Published: January 2023

Epidemic outbreaks in the real world are often accompanied by rapid information diffusion, which will change individual behavior patterns and affect the spread of epidemics. The community phenomenon in human society will also have an important influence on the spread of epidemics. The above factors to construct a new bilayer network are considered in this work. The activity-driven model is used to generate time-varying online information contact layer network and offline physical contact layer network. The information diffusion of individual online contact layer is used to affect the epidemic spreading dynamics of offline physical contact layer, and the individual mobility factor is used to control the community structure characteristics. In order to obtain the spreading dynamic equation of the whole network and analyze the spreading threshold of the network effectively, the microscopic Markov chain (MMC) approach is improved and extended to time-varying networks. Experimental verification of Monte Carlo simulations shows that the proposed method is highly accurate in predicting epidemic outbreak thresholds. The results show that individual mobility has no effect on the epidemic outbreak threshold, but it will affect the final number of infections in each community. The greater the individual contact capability of the online contact layer, the smaller the individual contact capability of the offline contact layer that can effectively suppress the epidemic spread. The above findings can present an important reference for effectively preventing and controlling the epidemic transmission in the real world.
Nonreciprocal transmission characteristics in double-cavity double-optomechanical system
Authors: Liu Ni , Ma Shuo , Liang Jiu-Qing ,   Collaborative Innovation Center of Extreme Optics, State Key Laboratory of Quantum Optics and Quantum Optics Devices, Institute of Theoretical Physics, Shanxi University, Taiyuan 030006, China,   Collaborative Innovation Center of Light Manipulations and Applications, Shandong Normal University, Jinan 250358, China
Published: January 2023

Optical non-reciprocal devices such as the isolators are quite important components in optical systems. To realize the non-reciprocal transmission of the light, the Lorenz reciprocity theorem must be broken first and the main method is that Faraday magnetic rotation effect is used to change the polarization state of the signal through magneto-optical materials. However, this method is difficult to achieve on-chip integration. So using optomechanical system is presented to overcome the difficulty.

In order to improve the isolation characteristics of the device, a double-cavity double-optomechanical system, which is coupled to two optical modes by two mechanical oscillators with two different optomechanical coupling strengths, is proposed. Driven by the red detuning field in such a system, the non-reciprocal phenomenon can be realized by regulating the phase difference, and the direction of light transmission and isolation can be determined as well. This property is determined by the quantum interference effect between the optomechanical coupling strengths and the couplings of the optical cavity modes. The method is that the relative operators are represented by their average value plus their relative fluctuations, and then according to the input-output relationship the transmission amplitude and the isolation rate are obtained.

We mainly discuss the distribution of the isolation rate as a function of the optomechanical coupling strength. The results are that the combined action of two mechanical modes can make the system have higher fault tolerance rate. The other mechanical mode can make the system achieve a large isolation rate at two specific frequencies and the reverse transmission in the resonant frequency signals at the same time.
Governança do conhecimento: identificação das perspectivas a partir da análise de conteúdo da produção científica
Authors: De Almeida Paulo Henrique , Silva Helena de Fátima Nunes , Mischiatti João Augusto Wendt
Published: January 2023

O conhecimento individual, base para a existência do conhecimento organizacional é influenciado por diversos fatores individuais e organizacionais que permitem ou não que o conhecimento seja criado ou compartilhado. Além da Gestão do Conhecimento, surge uma abordagem interdisciplinar emergente, que permeia os campos da gestão do conhecimento, os estudos de organização, a estratégia e a gestão de recursos humanos. A Governança do Conhecimento (GovC) consiste na implantação de mecanismos de governança influenciando os processos de conhecimento. O objetivo foi identificar as possíveis perspectivas apresentadas na literatura, além de verificar se existe um alinhamento entre elas. A partir da pesquisa bibliográfica e por meio da análise de conteúdo, buscou-se identificar as possíveis perspectivas sobre a GovC, realizando uma análise por clusters dos autores. Na sequência, com auxílio do software Iramuteq, realizar a análise dos documentos selecionados de que tratam do tema de GovC. Foi possível identificar três perspectivas de GovC (economia do conhecimento; eficiência econômica e; sustentabilidade e fatores sócio-culturais), e que trazem a ideia de que a Governança do Conhecimento se refere ao conjunto de instituições, das estratégias corporativas, tipos de transações, regras e formas de interação dos mecanismos de governança visando o uso, criação ou produção, troca ou compartilhamento, retenção ou absorção e uso do conhecimento. Como contribuição teórica pode-se observar, principalmente nos conceitos de Governança do Conhecimento que existe uma relação direta com a Gestão do Conhecimento. Como contribuição metodológica a utilização do software Iramuteq para a identificação das perspectivas.
Atividades empreendedoras em universidades: estudo de casos múltiplos em universidades paranaenses
Authors: Kaniak Vivien Mariane Massaneiro , Teixeira Rivanda Meira
Published: January 2023

A universidade empreendedora é entendida como capaz de promover novas alternativas em sua comunidade, à medida que identifica novas oportunidades de empreendimentos que trazem impactos sociais e econômicos A literatura desenvolvida sobre o tema nas últimas décadas denota a preocupação dos pesquisadores em compreender o que pode ser feito para aperfeiçoar e impulsionar as universidades no desenvolvimento de atividades empreendedoras. Este estudo tem como pergunta norteadora central: como as universidades paranaenses desenvolvem atividades empreendedoras por meio de suas agências de inovação/NITs? Essas agências são de fundamental importância no suporte à criação e à transferência das tecnologias e no desenvolvimento de ações empreendedoras das universidades. Foi realizado um estudo qualitativo por meio da estratégia de estudo de casos múltiplos com sete universidades localizadas no Estado do Paraná e a análise dos casos permitiu a comparação das principais atividades empreendedoras desenvolvidas nas universidades. Esse estudo tem como contribuição teórica ampliar a compreensão de como as atividades empreendedoras desenvolvidas pelas agências de inovação/NITs nas universidades podem orientar a sua atuação para atender as demandas da sociedade e dos mercados.  Além disso, novos insights sobre o tema podem levar gestores a assegurar vantagens que garantam a sustentabilidade da universidade e responder prontamente aos desafios.