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Бюллетень науки и практики @bulletennauki
Статьи журнала - Бюллетень науки и практики
Все статьи: 6993
On the development history of the human names concept in English language and culture
Статья научная
Throughout the whole space of language, in every word, in its semantics, sentence structure and the organization of different types of discourse "one can detect the traces of man". Anthroponyms play a special role among the ways of linguistic representation of a person. In the article the authors investigate the history of the development of the concept of human names in English linguoculture.
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On the meaning of English in the education of future teachers
Статья научная
In this article, we would like to discuss the role of English as the global language and its impacts on our profession as English teachers. Foreign languages open doors to development and give access to international education. English has roles as both an international and a global language. As an international language, English has played a role as the tool of communication among people from different countries, in other words, English is used to bridge linguistic odd among people in international communities.
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On the satirical poetry school
Статья научная
The article is devoted to the views of Great Azerbaijan writer Mirza Ibragimov on satirical poetry in Azerbaijani Literature. The academician gave an extensive analysis of the satirical poetry of Mirza Alekper Sabir.
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Статья научная
For the first time, ontogenetic characteristics and coenopopulation status of a rare and endangered species of early spring flora Listera ovata (L.) R. Br. are presented. The growing area of this species in the northeastern part of the Lesser Caucasus near the village of Ashagi Dashkesan, Dashkesan district and Tovuz district, Esrik Jirdakhan, has been studied. Information about two populations of the species is provided and a comparative analysis is carried out. The largest number of individuals and average density were noted in CP 1, the smallest in CP 2. The restoration index and replacement index have the highest values in CP 2. According to the Δ and ω indicators, both coenopopulations belong to the adult type.
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Статья научная
The accommodation of renewable energy is driving the development of energy storage technology, and shared energy storage has gained widespread attention because of its decentralized nature. In the optimal scheduling of shared energy storage, the problem of benefit distribution among multiple subjects is faced, so a shared energy storage plant operation optimization method based on Nash bargaining theory is proposed. The article constructs a joint model of shared energy storage plants and industrial users, establishes the cooperative operation model of each operator based on Nash bargaining theory, equates this nonconvex nonlinear problem into two subproblems of system revenue maximization and power transaction payment bargaining according to the mean value inequality, and uses the alternating direction multiplier method to solve them in a distributed manner. The algorithm selects three typical industrial users to participate in the joint system of shared energy storage, and through comparative analysis before and after cooperative bargaining, it is concluded that the proposed optimization method can effectively improve the benefits of each subject, while promoting the accommodation of new energy.
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Optimal design of heating boilers
Статья научная
Instead of a regular flywheel, it is possible to install a lightweight, with a variable moment of inertia on the electric unit, which will accelerate faster, which means it is faster to enter the mode of the rated frequency of the generator output voltage. In a mode close to the nominal speed of rotation, the moment of inertia will increase sharply, which will allow more mechanical energy storage, which will not allow to slow down the speed of the internal combustion engine, so it is better to damp (smooth out) the low-frequency external disturbances from the side of the electrical network.
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Статья научная
The integrated energy system (IES) is an effective way to achieve the “carbon neutrality and emission peak” goal. In order to further explore the role of the adjustable potential of demand side on carbon emission reduction, an optimized operation model of IES considering the demand response under the carbon trading mechanism is proposed. Firstly, according to the characteristics of load response, the demand response is divided into two types: price-type and substitution-type. The price-type demand response model is established on the basis of price elasticity matrix, and the substitution-type demand response model is constructed by considering the conversion of electricity and heat. Secondly, base-line method is used to allocate free carbon emission quota for the system and considering the actual carbon emissions of gas turbine and gas boiler, a carbon trading mechanism for the IES is constructed. Finally, a low-carbon optimal operation model of IES is established, whose objective is to minimize the sum cost of energy purchase, cost of carbon transaction and cost of IES operation and maintenance. The effectiveness of the proposed model is verified through four typical scenarios. By analyzing the sensitivity of demand response, heat distribution ratio of gas turbine and the operating state of the system under different carbon trading prices, it is found that reasonable allocation of price-type and substitution-type demand response and heat production ratio of gas turbine is beneficial to improve the operating economy of the system. Making reasonable carbon trading price can realize the coordination of system economy and low carbon.
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Optimal operation of integrated energy systems based on multi-energy complementarity
Статья научная
Complementary multi-energy operation is an inevitable trend in the development of integrated energy systems, and the construction of a fair and reasonable distribution method among multiple stakeholders is the key to realizing complementary multi-energy operation. Integrated energy systems have important applications for achieving sustainable energy development and building a green, low-carbon society, while the complex internal energy structures and equipment coupling relationships pose challenges for their operational optimization. Taking advantage of the interactive and complementary relationship between power and heat on both the supply and demand sides, energy storage devices are used on the supply side to realize the thermo-electrolytic coupling of the combined supply equipment and to enhance the multi-energy supply capacity of the system through each energy conversion device. On the demand side, load types are classified, and the elasticity of electrical loads and the diversity of system heating methods are used to construct a comprehensive energy demand response model with time shifting and curtailment responses of electrical loads and responses of heating load supply methods, and to propose a response compensation mechanism. On this basis, with the objective of minimizing the sum of system operation cost and response compensation cost, the mathematical model for optimal operation of integrated energy systems based on multi-energy complementarity is established, taking into account the equipment operation and dispatchable load resource constraints on both the supply and demand sides. Simulation results and comparative analyses based on arithmetic examples show that: synergistic optimization of both supply and demand, taking into account multi-energy complementarities, can effectively improve the flexibility and operational economy of the system.
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Статья научная
Combined with domestic and foreign literature, the research progress, key parameters and existing problems of flat-panel solar collectors are analyzed. On this basis, the thermal efficiency of flat-panel solar collectors is studied by means of experiments and numerical simulations. This paper introduces and analyzes the structural characteristics of flat-panel solar collectors. Based on the structural characteristics of flat-panel solar energy and research at home and abroad, the influence of the structural parameters of each flat-panel solar collector on the collector performance was studied. According to the heat transfer process and structural characteristics of the collector, the heat energy equation of the collector is established, and the calculation process of the heat loss of the collector is simplified according to the existing research, and the calculation of the heat loss coefficient is an empirical formula. In order to facilitate the experimental study, an efficiency factor and a heat transfer factor are introduced, and the temperature of the fluid at the inlet of the collector is used to replace the surface temperature of the heat-absorbing plate, which is difficult to measure. The calculation program is used to obtain the influence data of each key parameter of the collector on the thermal efficiency and use Origin to process the data to visualize the influence of each parameter on the thermal efficiency. On this basis, a variance analysis method is proposed to optimize the collector. Based on the PYTHON software, the calculation program is written according to the variance analysis method, and the key parameters that will greatly affect the instantaneous efficiency of the collector are combined in pairs, and the optimal collector parameter combination corresponding to the maximum instantaneous efficiency is studied. This research has a certain guiding effect on the utilization of solar energy.
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Optimizing the time costs of passenger transport of people with disabilities
Статья научная
The paper dwells on a mathematical model of the logistical system of transport services for persons with disabilities, and there have been analyzed factors that affect the time spent on their transportation. When developing methodology for optimizing the time costs of passenger transport of persons with disabilities, the following two basic transportation services have been taken into account: “Social Taxi”, which will transport only people with special health; b) vehicle system in combination with urban passenger transport, which will transport representatives of the group of people with restricted mobility together with all other passengers. The study found that in the case of insufficient accessibility to the required environment, by the increase in the demand of disabled people for transportation by “social taxi”, travel costs are increased that results in increasing total costs of the carrier. When determining the expenses of passengers, it is necessary to take into account the additional time, which the disabled persons need for boarding and alighting in buses at the stopping points, on average 2-3.5 minutes.
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Orchis simia Lam. во флоре Нахичевани
Статья научная
В Нахичевани имеется 3 ботанических района согласно высотным линиям. Виды семейства орхидей в Нахичевани недостаточно изучены. Ранее, в 2018 г. при проведении исследований во флоре Нахичевани около села Уступу Ордубадского района был найден новый вид Orchis simia Lam. рода Orchis L. были сделаны систематические, биологические и фитоценологические описания вида Orchis simia Lam. рода Orchis L. семейства Orchidaceae Juss. В 2020 г. проведено дополнительное обследование территории для уточнения экологического состояния вида и плотности популяции.
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Ordering and density amorphous phase of carbon-fiber polymer-matrix PTFE-composites
Статья научная
We studied the application of a mathematical model for calculating the X-ray density of a pure amorphous-crystalline polymer, taking into account the degree of ordering, crystallinity and deformation of a crystalline cell in the amorphous phase, to carbon-fiber PTFE-composites. By comparing the theoretical densities (based on the developed software) of PTFE+CF-composites system with the results of experimental densities and X-ray structural parameters, it was shown that the degree of ordering and density of the amorphous phase of the polymer-matrix PTFE-composites linearly decrease as the content of the carbon-fiber increases. The change in the degree of ordering of the amorphous phase when filler application can be considered as one of the mechanisms of formation of supramolecular structure of composite materials on the basis of amorphous-crystalline polymers.
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Статья научная
Discusses the impact of dispersed filler in the form of microcrystalline graphite (MG) on the formation of the supramolecular structure of the amorphous-crystalline polymeric materials the binary system of PTFE + MG. The theoretically calculated and experimental values of the composites densities are compared. The theoretical model of densities calculation takes into account the degree of crystallinity and the degree of the polymer-matrix (PM) ordering, as well as the deformation of the crystal cell in the amorphous phase. The degree of ordering and density of PM PTFE-composites amorphous phase behave in a complex manner with increasing content of dispersed filler and in a different way than with fibrous filler in the form of carbon fiber (CF). Studies of dual systems of PTFE + MG and PTFE + CF have shown that the ordering presence the amorphous phase can be considered one of the formation factors of the composite materials supramolecular structure based on amorphous-crystalline polymers.
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Organic agriculture in Turkey and the world
Статья научная
Organic agriculture is an alternative production system that supports soil structure, fertility and conservation by protecting the ecological balance, using biological control methods against diseases and pests; based on the sustainability of living life, aiming for the highest yield with the maximum use of natural energy resources. In this context, it covers a different production process from conventional agriculture. While intensive input applications in conventional agriculture aim for the highest yield, organic agriculture prioritizes sustainability. Sustainable agriculture is defined as an agricultural practice that protects soil, water and biodiversity while meeting food, energy and natural resource needs. To ensure that organic agriculture contributes to sustainability goals, organic regulations need to focus more on environmental and best practices. Increasing demands day by day have positively affected the sustainability of organic agriculture. The common feature of most of the definitions of organic agriculture is that the products should be produced in accordance with the basic standards and that every stage from the land to the table is regularly controlled. The fact that every stage of organic agriculture is audited and documented, and that the practices operate in accordance with legal procedures are other noteworthy elements. These legal procedures provide protection at many points. Organic agriculture is not only limited to safe food production to protect human health; it is also an agricultural and ecosystem management that is environmentally friendly, effective in reducing ecological pollution, protection of water resources, prevention of erosion, protection of biodiversity, agricultural sustainability and agricultural development.
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Organization of distance learning in mountain climate conditions in universities of Kyrgyzstan
Статья научная
This article examines the unique features of organizing and implementing distance learning in higher education institutions located in mountainous regions of the Kyrgyz Republic. The study focuses on the organizational and pedagogical challenges faced by universities, such as limited access to stable internet connectivity, technological infrastructure constraints, and the impact of the mountain climate on the effectiveness of online education. The article explores strategies and solutions for improving the quality of distance learning in these regions, including the use of adaptive learning technologies, specialized teacher training, and the development of flexible educational models that account for regional specificities. The findings highlight the need for tailored approaches to distance education that meet the unique demands of students and educators in mountainous areas.
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Organization of pulsating air flow through a heat exchanger
Статья научная
In recent years, the enhancement of heat transfer by pulsating flow has become a research hotspot. A great deal of work has been done in the past, with remarkable results, to achieve better heat transfer rates. How to improve the efficiency of heat exchanger is always a research topic. In this paper, pulsating air flow is formed by standard ventilation grille and electric actuator, and the pulsating air flow is guided through two-stage heat exchanger to study the influence of pulsating air flow on heat transfer efficiency. The experimental results show that the heat transfer efficiency can be improved by pulsating flow and the heat recovery efficiency can be reduced by increasing the flow rate of the heating medium.
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Organizing marketing research and information on internet marketing
Статья научная
The solution of issues related to the digitization of marketing activities in enterprises in the digital economy is in many respects related to the use of Internet marketing. It is important to organize marketing research, collect primary and secondary information, and conduct surveys through Internet marketing to ensure speed and accuracy in marketing decisions. Therefore, the article describes the conduct of Internet surveys, forms of surveys, methods of collecting marketing information. The focus is on methods of collecting primary marketing information.
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Статья научная
The article examines the processes of immigration (muhajirism) of Ossetes to the Ottoman Empire in the mid-XIX century and their subsequent internal migrations in Eastern and Central Anatolia. It evaluates the specifics of economic, social, and ethnopolitical adaptation and integration of the migrants and the construction of their own socio-cultural diasporic space in their new homeland. Particular attention is paid to the characteristics of the relationships of Ossetes with the indigenous population of the regions of settlement and with other North Caucasian muhajirs.
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Overview of research on heat transfer technology for reinforcement of shell and tube heat exchanger
Статья обзорная
The progress made in recent years in the field of reinforced heat transfer technology of shell and tube heat exchangers in China and abroad is reviewed. The energy-saving means and results of improving the heat transfer efficiency of shell and tube heat exchangers are introduced from the experimental research and numerical simulation respectively, and the future research of shell and tube heat exchangers to strengthen the heat transfer technology is also foreseen.
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PLC controlled substation standby power form the input system
Статья научная
This paper introduces the application of Siemens S7-200 PLC in standby power supply. PLC collects the normal running state signal of the primary equipment, which is used as the starting condition and locking condition of the standby power supply automatically input. It realizes different functions through programming to adapt to different running modes. Through PLC and king view in the laboratory, I verified the operation mode. It is also increases the obstacles, enriches the content of the standby self-casting system, and realizes the simulation of the joint adjustment with PLC. It is more obvious to watch the practical application of the stand auto-casting and the diversification of its functions.
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