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Бюллетень науки и практики @bulletennauki
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Все статьи: 6993
Influence of at winglets wingtips on the inductive reactance of the wing
Статья научная
In this article by the method of equations of steady horizontal flight the impact of AT winglets wingtips on the inductive reactance of the wing is explored. The total aerodynamic force, created by all four parts of the wingtips is determined. The vector of the total aerodynamic force of the wingtips is represented in the form of components of a linked coordinate system. Equilibrium equations for the steady motion of an aircraft with AT winglets wingtips in a horizontal flight are recorded. From these equations it is obtained that, in the direction of motion, the longitudinal component of the vector of the total aerodynamic force of the tips reduces the inductive drag of the wing, the vertical component is added to the lifting force of the wing, and the lateral component, due to symmetry, is zero. It is shown that the lifting force created by the AT winglets wingtips is larger compared to the same ones created by the upper tips. An important consequence is that the distribution of the lifting force over the wing span with double tips is more even in comparison with the wing without a tip or with a wing with the upper wingtip. The expression for the effective aspect ratio of the wing with the tips is determined, which is greater than the inductive drag of the wing without the tip. An interesting result is obtained: for identical aircraft weights, the product of effective aspect ratio of the wings with double and only upper wingtips on their coefficients of inductive resistance is equal to the product of the wing aspect ratio without a tip on its coefficient of inductive resistance. This law can also be formulated as follows: at the constant weight of the aircraft, the effective aspect ratio of the wing with the tips by its coefficient of inductive resistance is a constant value, independent of the form of wingtips.
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Статья научная
Determination of optimal fertilizer norms under tomato vegetation related to vegetable growing is a very important issue. For this purpose, the influence of various forms of nitrogen on the background of organic fertilizers on the background of the biometric data of the “Preliminary” tomato varieties, the total nitrogen, phosphorus and potassium content of tomato bushes have been studied. Also, the biochemical indicators of tomatoes were studied. It has been shown that no fertilization of the fertilizers in the fertilizer (10 t/ha) + N90P90K90 was observed in the fertilizer, but the tomato fruit weight and diameter increased, and the nitrates contained in it did not exceed the norm.
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Influence of some environmental factors on the phanerophytes in ex situ conditions
Статья научная
The article studied and analyzed the effects of wind, light and temperature on the phanerophytes used in landscaping the Absheron Peninsula (Azerbaijan). When studying the interaction of light with the studied plants, it was found that 311 species are heliophytes, and 51 are sciophytes. The study showed that 298 species unstable to wind and 64 wind resistant. In terms of heat resistance, the studied plants were divided into 3 groups: resistant to high (54-56 °C), moderate (52 °C) and low (48-50°C) temperature. The results of the study showed that these environmental factors are crucial and make a number of changes in the dynamics of plant development.
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Influence of wingtip type at winglets on the aerodynamic quality of wings
Статья научная
In this article by the method of equations of steady horizontal flight the impact AT winglets wingtips on the wing aerodynamic quality is explored. Determine the total aerodynamic force, created by all four parts of the endings. The vector of the total aerodynamic force of the endings is found in the form of components along the associated coordinate system. Equilibrium equations for the forces acting on the aircraft are recorded, with the linear motion of the aircraft with wing tips of the AT winglets type in a horizontal flight established. From these equations it is obtained that, in the direction of motion, the longitudinal component of the vector of the total aerodynamic force of the tips reduces the drag of the wing, and the vertical component increases the lifting force and this increases the aerodynamic quality of the wing. The components of the vector of the total aerodynamic force in the transverse direction from the left and right ends of the wing counterbalance each other By virtue of symmetry. Naturally, provided that the weight of the aircraft is constant and the speed of a straight horizontal flight, the angle of attack of the aircraft with the wing with endings like AT winglets should be reduced in order to observe the equality of the lift and the weight of the aircraft. A decrease in the angle of attack, in turn, leads to a decrease in the drag force. The effect of the aerodynamic wing tips on the maximum value of aerodynamic quality is studied. The expression for the aerodynamic lift coefficient at the most advantageous angle of attack is found. It is shown that the aerodynamic wing tips reduce the coefficient of lift of the wing without endings at the most advantageous angle of attack.
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Статья научная
In this paper, the process of adsorption of phenol derivatives, polyaminopolycarboxylic acids (PFPA) and tertiary amine salt, modeled on semi-empirical ZINDO/1, on iron (available in different grades of steel in the amount of 90-97%) is presented. The structures of the phenol derivatives for the study were chosen without complicating the structure, and the isomers of the position of the substituents were chosen. The structures of polyaminopolycarboxylic acids for the study were chosen according to the structure complication. In the course of the study, the following compositions were obtained and analyzed: compositions of the complexes obtained, global and local electrophilicity values, a graph showing the dependence of the charge density on the iron atom on the protective effect. For the first time, the interclass aspect of corrosion protection will be considered, where the generality of the investigated quantum-chemical approach for different classes of organic inhibitors, which are also found in different corrosive environments, will be proved.
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Статья научная
The increase of economic efficiency of entrepreneurial activity in the sphere of production of poultry farming on the basis of introduction of innovative technologies is considered, the methodology of management of the innovative development of a poultry farm adapted to branch features is developed. The proposed model for the organization of innovation activity provides for systematic monitoring of the R & D industry market, the implementation of a preliminary assessment of innovation in terms of its scientific and technical viability, efficiency and feasibility, the formation of a database of sectoral innovations, the coordination of the analyzed innovation project with the enterprise strategy and its inclusion in the innovative program of the poultry farm. Proposals on improving the organizational structure of poultry enterprises are presented.
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Innovative strategies for English language learning in Kyrgyzstan: the importance of media
Статья научная
Learning a new language is often perceived as a complex task, necessitating practice across multiple skills. This research examines the significant role of media and institutional resources such as TikTok, YouTube, Netflix etc. in enhancing the learning of English languages in case of Kyrgyzstan which is under Russian language influence. These resources empower English language teachers by bridging communication gaps and facilitating clearer explanations of concepts. By minimizing teacher talk, lessons become more engaging for students. Furthermore, they offer opportunities for learners to see, hear, and interact with the language, thereby increasing their interest in English. These resources also provide real-life experiences that encourage active participation, making learning more concrete and relevant. Additionally, they enhance retention rates, transform the teacher’s role from a knowledge dispenser to a facilitator, and allow students to progress at their own pace. Moreover, they stimulate practice, foster discussion, and inspire higher levels of achievement among students. Employing case study and descriptive methods, this research analyzes the role of authentic language in language learning, exploring ideological patterns in news structures. The findings present practical strategies applicable in language classrooms to improve both language proficiency and socio-cultural awareness. It is recommended that innovative strategies establish a framework to help learners reflect on their language learning experiences.
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Innovative teaching methods of idioms
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The focus of the article is on the idea of idiom teaching. The article aims to identify the main ways in which idioms are taught. A lot of attention is paid to the understanding of the meaning of the term ‘idiom’, to the main classifications of idioms and to the sequence of learning idioms. It has been found that it is necessary to study idioms comprehensively: pronouncing, reading, meaning, using, spelling, practicing. The article also argues for the importance of teaching idioms for better mastery of English.
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Integrating multimedia technology into teaching intercultural communication
Статья научная
It is widely known that enhancement of the system of teaching foreign languages can be achieved by introducing progressive teaching methods as well as using modern teaching and information-communication technologies thus enabling them to access the achievements of the world civilization and globally available information resources, ensuring international collaboration and communication. Nowadays, culture is playing an important role in foreign language teaching and learning, therefore, a lot of researches have been done in this field in recent years. It has been recognized that a language is used as the main medium through which culture is expressed. It is believed that students are aware of language rules but are not always capable enough to use the language sufficiently as they do not have a sound knowledge of the target culture. Nevertheless, “pure information” is insight; while the development of people’s cultural understanding leads them to better critical thinking. There are ample methodologies for developing learners’ intercultural competence. The present study also seeks the ways of developing a model of blended learning course on intercultural communication.
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Статья научная
This article examines the integration of artificial intelligence (AI) into accounting as a tool for process optimization and risk management. The benefits of AI, such as automation of routine operations, increased data accuracy, improved reporting transparency, and support in risk management, are discussed. Particular attention is paid to how AI contributes to predictive analytics and error prevention, which reduces the likelihood of financial losses. The challenges associated with the implementation of AI are also analyzed, including high financial costs, data protection requirements, and staff adaptation.
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Статья научная
Examines the integration of artificial intelligence (AI) into educational programs aimed at developing scientific analysis skills in an interdisciplinary context. Various AI technologies, such as machine learning, natural language processing, and intelligent educational platforms, are explored for their potential to transform approaches to learning and enhance the effectiveness of educational processes. The results of experimental analysis are presented, demonstrating that the use of AI contributes to improving student performance and developing critical thinking skills. The article also addresses the potential risks and limitations of applying AI in educational processes.
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Integration of the pedagogical culture of parents with the pedagogical culture of the teacher
Статья научная
This article speaks about the pedagogical culture of parents and teachers, which is passed on to future generations who are currently being educated. It is well known that all phenomena occurring in society that cannot be understood by a human being come from our own inability to guide and guide us in the right direction. To prevent such incidents, the parent and the school, the child must maintain close contact with three of them, and he offers open, free communication with three of them. Only when there is open, free communication between them, the child begins to open up and share his content with his parents or teacher. Everyone should train the child to solve their problems from an early age, without quarreling and talking freely.
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Intellectual agility: a toolkit of varied techniques for critical thinking
Статья научная
This article describes the essence of critical thinking, the existence of various tools for developing critical thinking, and the need to use a set of techniques to deeply understand and learn these tools, as well as the ways and conditions of their implementation. Also, in this article, several practical examples and manuals are presented to further develop critical thinking, to be able to use a wide range of techniques, and to be able to appropriately use the various critical thinking tools cited as examples, some of which are presented in pictures and test views.
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Inter-national and inter-ethnic tolerance formed among the people of Azerbaijan
Статья научная
Azerbaijan is one of the most multi-ethnic and minority nations, as well as ethnic groups, living together in the world. More than 50 local and at the same time representatives of small ethnic peoples live in the territory of the Republic of Azerbaijan. The people of Azerbaijan have a rich historical experience in the field of development and support of interethnic relations and multiculturalism. The President of the Republic of Azerbaijan, Mr. Ilham Aliyev, has repeatedly stated that Azerbaijan is a tolerant state, all peoples live in peace and security in Azerbaijan.
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Inter-subject communications in the learning of mathematics
Статья научная
This article describes the study of mathematics inter-subject communication in institutes, where the need to pay special attention to the relationship of mathematics with other subjects, especially with the basics of economic knowledge. Inter-subject communication is raised to a higher level of scientific weight training process, providing multifaceted influence on the personality of students, ensuring unity of education, educational and developmental functions. So much attention in institutes for economic education is primarily due to the fact that economic knowledge defined by renowned economists who can teach economic theory necessary for the formation of the economic way of thinking and economic culture of the students. Besides knowledge form the basis of economic education and training student. Influence of inter-subject communications so broadly that it covers the area of teaching all disciplines affects the curriculum, programs and textbooks, beyond the narrowly defined as training, affecting the formation of the world students. So there is every reason to believe inter-subject communication one of the principles of didactics.
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Interactional competence or communicative competence: overview of related theories
Статья научная
The article analyses the relationship of communicative and interactional competences by providing chronological evolution of the terms and discussing contrasting and similar approaches the language scholars presented earlier. Besides, relevant examples for issues of testing and assessing these two competences are illustrated to show the gaps between communicative teaching and testing.
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Статья научная
New requirements for specialist training provide for improving the quality of language education in higher education. The article examines the concept of intercultural communication and its inseparable connection with the teaching of a foreign language to students at non-linguistic universities. To form communicative competence and overcome cultural and linguistic barriers, the help of specialists in the field of intercultural communication is required, since the cultural component turns out to be part of the language.
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Статья научная
This paper studies the analysis of price fluctuation with periodic functions as infinite trigonometrically series in sine and cosine terms and presents the basic analysis of Fourier series with regard to its applications in price fluctuation. Data used for the analysis was collected by ZEF/UNESCO Khorezm project over a 97 month on weekly basis, during 01.05.2002-01.05.2013 yy. on Urgench market for ten commodities. The findings show that seasonal fluctuation is very high for fruits and vegetables in harvesting and before harvesting period, while it is not high for livestock productions, rice and wheat.
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Статья научная
This research paper aims to delve into the societal position of women and mothers in Kyrgyz society through the analysis of My Mother poem by Zhypara Isabaeva. The paper employs a feminist lens to critically analyze the poem and its themes, characters, and poetic devices, shedding light on the challenges faced by Kyrgyz mothers. The study also seeks to understand how Kyrgyz women poets in the post-Soviet era express their female identity through their works. The development of Kyrgyz lyric poetry in the post-Soviet era is a reflection of the country’s rich cultural heritage and the experiences of its people during a time of significant change. Despite the challenges faced, Kyrgyz lyric poetry remains an important part of the country’s cultural heritage and continues to shape the national identity of Kyrgyzstan. The paper will explore the role of motherhood and marriage in hindering the self-realization of women in society, and examine the cultural peculiarities of Kyrgyz society and their impact on women's social standing.
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Intraspecies molecular DNA polymorphism and threat of Hirudo orientalis
Статья обзорная
Medical leeches play the role of a natural factory for the production of a complex of unique biologically active substances such as hirudin, eglins, bdellins, hementin, bradykinins, which are urgently needed by modern medicine and veterinary medicine. Medical leeches produce a wide range of enzymes such as hyalinodase, destabilase, collagenase, apyrase, elastase and triglyceride. All these substances are biologically active substances of natural origin. It is used to treat a wide range of diseases, such as amenorrhea, osteoarthritis, trauma, and blood stasis syndrome. In modern times, leeches also serve as an important model system for understanding the structure, function, development, regeneration, and repair of the nervous system. The currently seven known species of the Hirudo Linnaeus, 1758 genus of the Hirudinidae family are widespread in different regions of the Eurasian contingent. The results of the phylogenetic analysis based on the nucleotide sequences of the oxidase enzyme subunit I (12S r-RNA, COI) allow us to assume that the Hirudo genus is monophyletic. In 2005, P. Trontelj and S. Utevsky, while studying the molecular systematics of medical leeches, analyzed 2 samples of medical leeches from Azerbaijan together with others. According to the results of the cluster analysis, two medicinal leech samples of Azerbaijan ( Hirudo sp. AZ1 and Hirudo sp. AZ2) form a separate cluster and are located between H. medicinalis and H. verbana species. As a result of recent phylogenetic studies, it was determined that those two samples are H. orientalis species. The main goal of the conducted research is to study the intraspecies polymorphism of medical leeches collected from different regions of Azerbaijan at the genome level. Isolation of leech chromosomal DNA was performed with the Gene Elute Mammalian Genomic DNA miniprep reagent kit.
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