bluuebunny/crossref_metadata_2025 huggingface dataset:
Design and Development of a Micro Inverter Power Monitoring System to Enhance Photovoltaic System Performance by Integrating LoRaWAN and IoT
Authors: Aris Prastyo Elga , Junus Mochamad , Rohadi Erfan
Published: January 2024

This research examines the significance of utilizing Photovoltaic Solar Power Systems (PVSPS) with Micro Inverters and Internet of Things (IoT) technology, particularly LoRaWAN, in addressing challenges related to efficiency and power management. PVSPS has emerged as a leading solution to tackle the increasing global energy consumption and the adverse effects of greenhouse gas emissions. The rapid growth of the PVSPS industry underscores its relevance. This study explores the impact of shading on solar panels connected in series and parallel configurations, emphasizing the importance of proper placement. The results indicate that shading significantly reduces energy production, especially in panels connected in series. Micro Inverters play a crucial role in maintaining stable output voltage, even under shading conditions. However, attention must be paid to their influence on output current. Efficient monitoring and management of PVSPS through IoT technology such as LoRaWAN are key in supporting the transition to sustainable energy. This data underscores the importance of continuous monitoring to identify issues and optimize PVSPS performance, in the face of environmental challenges and climate change.
Suitability Analysis for Solar PV Farm Installation using GIS and Analytical Hierarchy Process (AHP) in Simara Island, Province of Romblon, Philippines
Authors: Garcia Junrey , Gacu Jerome , Lawrence Mark
Published: January 2024

Finding suitable installation sites for renewable energy technologies requires careful planning and consideration of multiple factors and not just relying on the location’s energy potential. This research work presents a suitability analysis of solar PV farm installation using GIS and Analytical Hierarchy Process (AHP) in Simara Island, Province of Romblon, Philippines. The study gathered key important details of the island from various sources and then categorized them in terms of climatology, location, environment, meteorology, and disaster susceptibility. Meanwhile, a pairwise comparison was obtained after a panel of experts ranked the above-mentioned parameters. A multi-criteria decision analysis (MCDA) using AHP were then applied to generate new sets of suitability maps, which were combined through weighted overlay analysis using QGIS to produce the necessary solar PV suitability map. The map reveals the spatial distribution of suitable solar PV farm installation sites, including highly suitable, suitable, moderately suitable, marginally suitable, and unsuitable locations. Results show that most of the island is suitable for solar PV farm installation at 42.81%, while 39.73% accounting for highly suitable locations. Moderately suitable and marginally suitable sites account for 8.76% and 1.07%, respectively, and 7.63% is deemed unsuitable. This study successfully identifies suitable locations for solar PV farm installations on Simara Island, demonstrating the effectiveness of the GIS and AHP combined methodology. This approach holds great potential for guiding RE planning and development in similar island regions in the Philippines.
Development of Low-Speed Generator for Rural Energy Self Power Plant
Authors: Mizar Muhammad Alfian , Hadi Mokh. Sholihul , Ismail Hasan
Published: January 2024

This study investigates the potential for wind energy generation in various regions of Indonesia, which have been identified to potentially produce over 100 megawatts (MW) of electrical energy. In response to the need for rural electrification and the utilization of this wind potential, we developed a low-speed generator suitable for rural, energy-independent power plants. The objectives were twofold: to design a low-speed generator optimized for low rotational speeds reflective of local wind conditions, and to assess its performance in electricity generation. Our research methodology encompassed an analytical comparison of exploratory data and literature to devise a generator design compatible with rural wind patterns. This involved calculating the necessary wind acceleration to actuate the designed generator. Subsequently, a prototype was designed, constructed, and tested, examining variables such as iron core composition, winding wire, magnetic strength, and electrical output under wind-driven conditions. The performance tests revealed that the Low-Speed Generator produced an average voltage output scaling with rotational speed–from 5.3V at 100rpm to 21.1V at 500rpm. The peak voltage output at 500rpm rotation reinforces the generator’s efficacy in higher rotational regimes. Such findings advocate for the Low-Speed Generator’s application as a sustainable solution to the rural energy crisis, aligning with the broader objectives of equitable energy distribution and the Sustainable Development Goals (SDGs).
Investigating the Physicochemical Characteristics of Moringa oleifera Leaves: Revealing its Viability as an Alternative Fuel Source
Authors: Sukarni Sukarni , Anis Samsudin , Yusril Aminullah Ahmad , Yuwono Dani , Mufti Nandang , Amran Tuan Abdullah Tuan , Johari Anwar
Published: January 2024

This study explores the physicochemical properties inherent in Moringa oleifera leaves, aiming to uncover their potential as a promising alternative fuel source. The research involves a comprehensive investigation into the unique attributes of these leaves, shedding light on their suitability for serving as an eco-friendly and sustainable energy option. By examining key physicochemical characteristics, this study aims to contribute valuable insights to the ongoing discourse on diversifying fuel alternatives and promoting environmentally conscious energy solutions. The samples underwent proximate analysis to achieve this objective, revealing specific contents of volatile matter, fixed carbon, and ash at 76.23%, 12.76%, and 11.01% (wt%, dry basis), respectively. Additionally, the leaves exhibit a gross calorific value of 4702 kcal/kg (19.67 MJ/kg). The ultimate analysis further underscores the high fuel potential of the Moringa oleifera leaves, with a carbon content of 47.40% (wt%, dry basis). Notably, the leaves present low undesirable levels of nitrogen and sulfur, measuring at 3.68% and 0.67% (wt%, dry basis), respectively.
The effect of pump diameter and penstock pipe on the electric power of a hybrid generator
Authors: Subekti Massus , Parjiman
Published: January 2024

Ocean Wave Power Plants (WEC) are divided into 6 types, namely (1) Point Absorber, (2) Oscillating Water Column, (3) Pressure Differential Submerger, (4) Oscillating Wave Surge Converter, (5) Attenuator & Terminator, and ( 6) Removable Devices. The AquabuOY type is a type of Point Absorber type wave power generator. This type uses a long pump connected to a Pelton turbine and was developed by Finavera (Aquaenergy) Company of Canada. The AquabuOY system has a weakness in that the turbine rotation depends on the wave period that occurs. The slower the wave period occurs, the weaker the resulting turbine rotation, therefore it needs to be improved by adding a reservoir unit to obtain pressure. stability and puffiness of the unit so that the rotation produced in the turbine is much greater. With this addition, the generator will spin more quickly and stably. In addition, the addition of wind energy installed at the top of the unit means that the generator to be built will produce more energy, is more flexible, can be placed in shallow, medium or deep seas, does not require complicated foundations, is relatively cheap, is not affected by extreme weather. and can be used in all sea conditions just by attaching it to a ballast. This study examines the effect of pump diameter and outlet pipe diameter on the electrical power generated at a hybrid power plant. pump diameter variations of 8 inches, 10 inches, 12 inches and 14 inches. Variation of outlet pipe diameter 1 inch, 2 inch, 3 inch and 4 inch. In this paper, we will present a simulation of the calculation of electrical energy from wave power with variations in pontoon volume, pump diameter, and outlet pipe diameter to obtain the most optimal system size. while wind energy power generation is presented in a different pape. Calculation simulation results to get the most optimal pump diameter and outlet pipe diameter in the hybrid power plant system built.
Morphology and structure of sawdust waste after adding magnetic nanoparticles
Authors: Suryanto Heru , Yanuhar Uun , Puspitasari Poppy , Aminnudin  , Yanuhar Uun , Maulana Jibril , Caesar Nico Rahman , Binoj Joseph Selvi , Osman Azlin Fazlina
Published: January 2024

Sengon (Albizia chinensis) is a type of forest plant that grows quickly and is widely used to meet human needs. The large number of uses of Sengon wood causes sengon wood waste, such as sawdust, to increase. The study’s aim is to analyze the morphology and structure of sawdust waste after adding magnetic (Fe3O4) nanoparticles. The methods include collecting sawdust waste from wood (Sengon) was conducted by the crushing process to get smaller sawdust sizes. Alkalization was applied to sawdust and followed by a bleaching process. The powder is then immersed in a solution containing magnetic (Fe3O4) nanoparticles of 10wt%, and then dried. Sawdust composite powder the analyzed using X-ray diffraction and electron microscope instruments. The result indicates that magnetic nanoparticles deposit on sawdust powder and then make the powder become rougher. Higher content of magnetic nanoparticles causes higher agglomeration. The diffraction pattern with 2θ of 14, 16, and 22 indicates that the structure of sawdust is cellulose 1β. The degree of crystalline of sawdust powder reduces from 76.1% to 73.3% after adding magnetic nanoparticle. In the future, these composite powder results will develop as flocculants for wastewater treatment.
Evaluating Mechanical Strength in Vertical-Axis Tidal Turbines: A Comparative Study of Internal Blade Structure and Material Selection through CFD Simulation
Authors: Ari Muhamad , Hadiwidodo Yoyok Setyo , Mukhtasor
Published: January 2024

Due to the density of water, tidal turbine blades are subject to significantly greater stresses than wind turbine blades. Multiple blade failures occurred during prototype testing as a result of loading conditions and protracted exposure to seawater, which created a severe work environment. The structural integrity of tidal turbine blades is essential for long-term reliability and performance. Numerous investigations into structural performance have been conducted. However, previous research has centred on horizontal-axis tidal turbines, while research on small-scale vertical-axis tidal turbines is limited. This paper aims to compare the Vertical-Axis Tidal Turbine (VATT) structural performance of hollow and solid blade structures in an identical NACA profile using three distinct materials. Finite element analysis (FEA) is employed to construct a model and simulate the mechanical characteristics of VATT blades. The use of static analysis simulation is employed in order to evaluate many parameters, including stress distribution and deflection. Parametric studies are conducted to explore the impact of internal blade structure and materials on mechanical strength. The use of computational fluid dynamics (CFD) simulations is employed for the purpose of analyzing the interaction between blades of vertical axis tidal turbines (VATT) and tidal currents, thereby enabling the assessment of structural loading. According to the simulation results, the hollow profile is subject to significant deflections and stresses. Other data indicates that the utilization of stiffeners in porous structures improves material efficiency and results in lighter blades, although further analysis is needed to investigate fatigue life prediction in optimizing structural design.
Synthesis, Characterization and Antibacterial Properties of Complex [Ag(SCN)(2-NH2py)]
Authors: Mariyam Dewi , Dasna I. Wayan , Wijaya Husni Wahyu , Danar
Published: January 2024

The reaction of AgSCN with 2-aminopyridine in ammonia solution produces the colorless crystal of catena-poly [Ag(SCN))(C6H5N2)]n. The crystals were characterized by FTIR analysis and single crystal X-Ray diffraction. The silver(I) ion bind to one N atom of 2-aminopyridine, one N atom of thiocyanate and two S atoms of two thiocyanates to form a pseudo-tetrahedral complex. The presence of thiocyanates bridge ligand give an one-dimensional polymer. Complex [Ag(SCN)(2-NH2py)] crystallizes in monoclinic lattice and P21 space group with a=9,122(3) Å, b=4,1506(15) Å, c=11,269(4) Å, α= γ= 90°, β= 109,214(8)°, R= 0,0287. Intermolecular hydrogen bonds between amino group and thiocyanate NH-H…N-CS (2.389 Å) are also found in this structure. In vitro antibacterial screening complex was evaluated against two bacteria (Escherichia coli and Staphylococcus aureus). The results show that complex has higher antibacterial activity than 2-aminopyridine and KSCN. This is due to central ion and the ability of the ligand to interact with membrane proteins.
Development of Smart Link Book as a Medium for Interaction Between Special School Institutions and Parents Through User Centered Design
Authors: Listyaningrum R. Anggia , Nur Hidayat Wahyu , Ediyanto  , Nur Iswara Luthansyah , Dicky Maulana Irwanto Lalu , Wahiza Binti Abdul Wahat Nor
Published: January 2024

By redesigning linking books, this study seeks to enhance the user-communication experience (UX) between school-aged children with special needs (SLB) and their parents. Understanding special education pupils’ growth, needs, and progress depends heavily on effective parent-school communication. Current link books, however, frequently fall short in terms of providing information in a user-friendly and inclusive manner. This research employs a user-oriented design approach to comprehend the requirements and preferences of parents and special education students. We found possible issues in the current bridge books through content analysis and engagement methods. The findings of this study will be used to guide the redesign of link books so that they are more user-friendly and available to everyone. The creation of a new linking book prototype involved the application of iterative design techniques. This prototype includes design components like inclusive language, understandable graphics, and improved accessibility features. Then, to gauge reactions and identify areas for development, this prototype was tested with the help of parents of SLB students and the students themselves. It is intended that the findings of this study would help those who create connecting books for special schools and other educational institutions that wish to enhance communication with special needs student groups. Better design will allow us to establish more efficient lines of communication between parents and schools, enhancing parental support for the academic growth of special education kids.
Hybrid Technology Incinerator For Solid Waste Processing Using an Evaporative Cooling System
Authors: Leksono Edy Duwi , Hendrik Eli , Fikri A. Atif , Basuki Andi
Published: January 2024

An incinerator is a combustion device that burns waste at high temperatures. The incinerator in this research uses hybrid technology, which uses an evaporative cooling system to reduce environmental pollution from combustion residue. Analysis of incinerator performance based on indicators: efficiency of combustion use, level of residual combustion waste and B3 waste levels, and levels of air emissions from the combustion process. Emission measurements include particulates, CO2 gas, CO gas, heavy metals, NO2, SO2, HCl, HF and total hydrocarbons. The method used as a result of the development of this incinerator is a field experiment, namely a field trial using the process of burning B3 solid waste and calculating parameters, which are indicators for measuring the effectiveness of the working system of the incinerator development. Hasil uji lapangan insinerator dengan system pendingan evaporative diperoleh bahwa efisiensi pembakaran pada kapasitas 50 kg/jam selama 3 kali proses uji coba pengolahan limbah di Universitas Negeri Malang yaitu pada tanggal 18 Sebtember, 19 Sebtember dan 20 Sebtember 20 23 secara berturut sebesar 95,4%, 9 1,2% dan 98,1%. Efisiensi terbaik didapat pad a tanggal 20 Sebtember 2023 sebesar 98,1 % dengan massa limbah 75 kg, massa abu 1kg, suhu operasi 310 - 6 10°C dan pengolahan selama 4,2 jam
Study of corrosion-resistant steels in hydrogen sulfide-containing environments of oil and gas fields
Authors: Ivanova Tatyana
Published: January 2024

Hydrogen sulfide corrosion cracking of steel occurs in deposits containing corrosive components - hydrogen sulfide and carbon dioxide (carbon dioxide). The mechanism of corrosion cracking of steel in hydrogen sulfide-containing environments of corrosive oil and gas fields is considered, and factors influencing hydrogen sulfide cracking are identified. Increasing the performance properties of carbon, low-alloy, structural steels resistant to hydrogen sulfide and sulfide cracking was carried out on the basis of improving the composition of the components of chemical elements and the structural state through the choice of heat treatment methods depending on the acidity and temperature of the environment, partial pressures of carbon dioxide and hydrogen sulfide. Laboratory and production tests have shown the durability of the proposed compositions chemical elements of steels to hydrogen sulfide cracking, sulfide cracking and hydrogen swelling in deposits containing corrosive components was 70–80% compared to existing carbon structural steels.
Calculation of technological cycles of manufacturing model blocks for the lost-wax casting method, taking into account the stability coefficient of the duration processes
Authors: Dolgov Nikita
Published: January 2024

The paper considers the technological cycles of obtaining wax models in automatic molds, in manual molds and by the additive method. The cyclograms of the work of the site for obtaining model blocks consisting of wax models are shown. The dependences of the duration of time cycles for the considered methods of obtaining wax models are presented. It is revealed that the production of wax models in automatic molds is the most productive method, however, this method has the longest cycle of technological preparation of production. The production of wax models in manual molds has a cycle duration comparable to the previous method of technological preparation of production, however, the cycle duration of obtaining wax models for this method is longer. The additive method makes it possible to produce products with a minimum duration of the pre-production cycle. The main operations of manufacturing wax models by the methods under consideration are revealed. The influence of the stability coefficient of operations on the work organization of the site for production wax models is analyzed.
Gasification in the filtration combustion mode for disposal of medical waste with heat generation
Authors: Polianczyk Eugene , Tarasov Georgy , Zaichenko Andrey
Published: January 2024

The gasification of medical waste (MW) in a counterflow updraft gasifier with a partial recycle of the generator gas to the combustion zone is considered as applied for MW disposal with a heat generation. The temperature regimes and material flows are assessed for a typical model MW composition with a humidity varied from 0 to 40 wt.%. A procedure for control of the process for varied MW composition is proposed. For a given MW composition and flowrate, the combustion temperature can be controlled to prescribed value 900°C via control of the flowrates of air and and recycled generator gas. Throughout the studied humidity range the generator gas is combustible and can provide heat generation on the aftercombustion stage. The method promises an efficient and energy sustainable MW disposal.
Paradigmatic alternatives of global development, scientific and technological progress and prospects for the development of civilization in the institutional “physical social economy” models
Authors: Zinchenko Viktor , Polishchuk Oleksandr , Levkulych Vasyl , Bulvinska Oksana , Iehupov Mykola , Levkulych Viktoriia
Published: January 2024

The article analyzes the models of scientific and technical progress, the application of physical social economy developments in the conditions of globalization processes. The specifics of understanding the essence, forms and content of the strategy for the development of science and socio-economic reforms at different levels are determined. In recent years, the concept of “Physical Social Economy” has occupied a significant theoretical-practical, social-analytical, and at the same time economic-prognostic position among the global development models of national economies, economic forms, international relations, and the world economy, studying the peculiarities and principles of the development of the material sphere (physical) production with the aim of quantitative and qualitative improvement of the filling of the “market basket” on the basis of continuous scientific and technological progress, ensuring the long-term existence of mankind on Earth.
Comparison of current and expired norms for the development of methods for checking and monitoring the seismic resistance of buildings
Authors: Umarov Shodiljon , Akramov Khusnitdin , Abobakirova Zebuniso , Mirzababayeva Saxiba
Published: January 2024

The article presents a comparative analysis of the development of standards for construction in seismically hazardous areas of the CIS countries and the Republic of Uzbekistan. The norms that have been used for several years in the CIS countries and developed countries such as the USA, China, Japan, as well as the current norm currently used in the Republic of Uzbekistan were also studied. Information is given about the latest differences in the norms with the new edition of BRR 2.01.03-19 “Construction in seismic areas”, according to the principles of zoning of the territory for seismic hazard, assessment of dynamic properties of soils, clarification of the seismicity of the construction site, construction of reaction spectra, consideration of the constructive solution and coefficients of responsibility of buildings, permissible sizes and assessment of the impact of the number of floors. The differences between these norms and European seismic norms are given. When studying the problem, the scientific works of a number of authors were considered [1-3,6,7].
Investigation of teos hydrolytic polycondensation in the synthesis of gas-sensitive films for a semiconductor carbon (II) oxide sensor
Authors: Muminova Nargiza , Sidikova Khulkar , Abdurakhmanov Ergashboy
Published: January 2024

This paper discusses the study of theos hydrolytic polycondensation in the synthesis of gas-sensitive films for a semiconductor carbon (II) oxide sensor. As a result of the our experiments, the composition and proportions of the components for the synthesis of gas sensitive materials for semiconductor carbon monoxide sensors were developed. The composition, porosity, and surface structure of the obtained nanomaterials have been studied by the methods of scanning electron microscopy, X-ray analysis, and differential thermal analysis. Semiconductor sensors have been created that detect CO in a wide range of its concentration.
The influence of the average residence time of the fiber in the set of the main drum and the flats of the carding machine on the carding degree
Authors: Murzabayeva Gulzhan , Yeshzhanov Abilda , Kaldybaev Rashid
Published: January 2024

The article presents the results of calculating the average residence time of the fiber in the flat set of the main carding zone for carding machines TS-03 (Trutzschler) and C60 (Rieter). The fiber carding degree in the “drum-flat” zone was studied. The carding degree by the teeth of the main drum of free fibers held by the needles of the flats and the carding degree by the needles of the flats of free fibers held by the teeth of the main drum were determined. The total carding degree in the “drum-flat” zone of the carding machine was calculated.
Method of calculation for dynamic strength of complex configuration frame structures of locomotives for transport engineering
Authors: Khromova Galina , Radjibaev Davran , Zabiyeva Aliya
Published: January 2024

The article presents a numerical and analytical method for studying the bending-longitudinal vibrations of the load-bearing frame of the locomotive frame of a complex configuration in the form of an elastic rod of variable cross-section with variable mass, bending and longitudinal stiffness, based on methods: piecemeal linear approximation, iterations and the Boundary Element Technology. Numerical studies are performed in C # and in MATHCAD 15.
Assessment of the functional behaviour of precision engineering workers using ultradian rhythms of HRV indicators in the prevention of man-made disasters
Authors: Bashkireva Anastasia , Bashkireva Tatiana , Severin Alexander , Severina Evgeniya , Halab Gazi
Published: January 2024

Understanding the functional behavior of precision engineering workers was the aim of studying the ultradian rhythms of HRV indicators to prevent man-made disasters. It was revealed that the higher the voltage of the functional state, the lower the heart rate indicators. The results established specify activation of the vagus associated with cognitive activity. Precision engineers used ultradian rhythms of HRV indicators and the Pareto law to assess the functional behavior of men. The results revealed that work activity negatively impacts the functional behavior and health of 58% of men, placing them in a group associated with human factors and man-made disasters.
Assessment of the current state of economic integration of the member-states of the Eurasian economic union under food security
Authors: Yesbolova Ainur , Abdikerimova Gulzhanar , Kulanova Darikul , Seidakhmetov Marat , Moldabekov Bakhytzhan
Published: January 2024

This paper conducts a comprehensive examination of the current state of economic integration among the member-states of the Eurasian Economic Union with a specific focus on its implications for food security. Established in 2015, the EAEU comprises Armenia, Belarus, Kazakhstan, Kyrgyzstan, and Russia, and endeavors to create a common economic space to foster mutual cooperation. Against the backdrop of global challenges, the nexus between economic integration and food security within the EAEU emerges as a critical aspect warranting careful scrutiny. The study employs a multidimensional approach, analyzing trade patterns, agricultural policies, and collaborative initiatives among member-states to elucidate the existing dynamics of economic integration and their impact on the food security landscape. By examining the interplay between the free movement of goods, services, capital, and labor, the research aims to identify strengths, weaknesses, opportunities, and threats in achieving a resilient and sustainable food supply for the union’s populations. The findings of this study contribute to the understanding of the intricate relationship between economic integration and food security, offering insights that can inform policy decisions within the EAEU. In unraveling the complexities of this multifaceted nexus, the research seeks to guide the union toward a more secure and prosperous future, emphasizing the importance of nuanced strategies to address evolving global challenges. This paper serves as a valuable resource for policymakers, researchers, and stakeholders interested in the intersection of economic integration and food security within regional economic unions.
Development of an output management model for a branch of an engineering corporation
Authors: Tsyganov Vladimir
Published: January 2024

The model of output control in a corporation, carried out by its top manager (Chief), is considered. The head of the branch of the corporation (Head) controls the subordinate plant headed by the Director. A corporation’s branch output is affected by random external influences. The Head knows exactly the maximum possible volume of outsourcing production at the branch level. But he does not know the maximum possible volume of production (potential) in the plant. The Adviser helps the Head to eliminate this uncertainty. For his part, the Director knows exactly plant’s potential. At the same time, the Chief does not know this potential, nor the possibilities of outsourcing. Thus, the Head can manipulate branch output to influence the decisions of the Chief in order to increase his own promotion. Therefore, the Chief needs to learn how to control the Head in order to maximize branch output. Similarly, the Director can manipulate plant’s output to influence the Head’s decisions about his own denomination. Therefore, the Head needs to control the Director in order to increase plant’s output. A complex control mechanism has been found, in which total branch output is maximal. The use of such a mechanism is illustrated by the example of the modernization of freight railway platforms.
Numerical calculation the fracture toughness of square section beam under three-point bending test
Authors: Deryugin Evgeny , Pazhin Albert
Published: January 2024

A universal equation is proposed to determine specific fracture energy based on numerical calculations by finite element methods in the ANSYS system referring to the three-point bending of a square beam arranged edgewise on supports. Numerical dependences of the specimen compliance on the crack length were represented as the 5th and 6th degree polynomials on the relative value of Δl/h, where Δl is the crack length and h is the half length of the square diagonal. To calculate the specific fracture energy, we used the derivative of specimen compliance by the crack length. The analysis has shown that finite value of specific fracture energy at Δl→0 is obtained when the decomposition term at Δl/h is equal to 0. A satisfactory agreement between the specific fracture energy values for the 5th and 6th degree decompositions is observed only at Δl/h ≈ 1. As the values of Δl decrease, the difference becomes increasingly significant. The averaging of coefficients at corresponding Δl/h degrees of two considered decompositions allows us to find a power function that weakly depends on the Δl/h ratio and leads to a consistent dependence of the specific fracture energy on the crack length. Due to the performed calculations, a universal equation is obtained to determine the specific fracture energy according to the test data of square beams by three-point bending in a wide range of geometric dimensions.
Numerical simulation and experimental data blade investigation of horizontal wind turbine
Authors: Isaev Viktor , Bashkin Mikhail , Kuskarbekova Sulpan
Published: January 2024

The article presents the results of numerical simulation of a wind turbine blade. The fundamental formulas of the theory of aerodynamics, on which the calculations are based, are presented. Computer models of air movement near the blade are shown. Data on the distribution of speed have been obtained. The coefficient of wind energy utilization depends on the parameters of both the oncoming flow and the blade profile. This coefficient is different for vertical and horizontal wind turbines. To improve the operation of the wind turbine, it is proposed to use non-network algorithms. The neural network should collect data on the received errors in the system of mechanization and automatic control. Errors in control systems are analyzed, individual parameters are weighted to stabilize the operation of the wind turbine as a whole.
Principles of complex multi-stage processes decomposition into component subsystems
Authors: Sharifzhanova Nilufar
Published: January 2024

The article deals with the decomposition of complex multi-stage processes into components and interconnected by material and information flows. Decomposition is carried out to create micro-models for each subsystem. Simplifying the system management of the whole system. The main attention is paid to observance of principles, each subsystem has one input and two outputs according to the structural scheme. In addition, a material balance of input and output parameters is maintained.
Inventive activity: features of the first stages
Authors: Fomin Nikita , Isaev Alexander
Published: January 2024

The Paper presents theoretical and empirical findings about inventive activity. Major invention process models are considered, their comparative analysis is carried out, and their advantages and limitations are revealed. The least studied first stages of inventive activity were theoretically identified and became the main objective of this study. To specify the content of the first stages of the inventive process, an empirical study was carried out through the methods of peer review, written and oral surveys, content analysis and modelling. The study involved 15 experts, namely inventors with a significant number of patents. Based on the survey of experts and the analysis of other authors’ investigations, the content of the first stages of inventive activity was specified and conclusions were drawn about their variability as well as the possibilities to apply them in developing inventive abilities and enhancing technical innovation processes.
Cluster analysis in the classification of transport infrastructure of large cities
Authors: Terekhova Anna I. , Vlasov Denis N.
Published: January 2024

Subject of the research: The subject of the research are transport and transfer hubs in the city of Voronezh (population 1,054,111 people). Transport and transfer hubs ensure the connectivity of the transport network, provide transport services to urban residents, and are an essential element of the system of settlement centers. Determination of classes of TIH in large cities. The role and significance of the TIH in the transport and planning structure of a city is determined by their classification. The node position in the general classification allows to determine its composition, to provide optimal and comfortable for passengers planning solutions, etc., etc. The selection of factors for the formation of TPU is carried out using a single-factor analysis of variance, which allows us to exclude less significant indicators more accurately. The selection left only 6 indicators, which were taken for further analysis. Cluster analysis was performed using a clustering tree. The results are five clusters, from which 4 classes of transport and transfer hubs in accordance with SP 395.1325800.2018 “Transport and transfer hubs. Design rules” and their characteristics are given. Conclusions on the compliance of the obtained clusters with SP 395 are made, the main indicators for the cluster analysis are outlined.
Renovation of urban areas as a factor of settlements sustainable development
Authors: Kuzmina T.V. , Belyavskaya O.Sh. , Slutskaya K.A.
Published: January 2024

The article under consideration determines the role of biosphere compatibility in the context of persisting antagonism between destructive human activity and the environment. It also shows the relevance of chemical and pharmaceutical industry enterprises merger to build a flexible self-developing model of long-term territorial development of the city of Tyumen. A number of aspects contributing to the provision of sustainable urban development is outlined.
Model of a system for monitoring and managing the efficiency of a construction object
Authors: Danilov O.F. , Nikitin I.K. , Osipenko A.M. , Domankij V.O.
Published: January 2024

The effectiveness of the construction organization largely depends on the competent design and implementation of the business model and the functional production model. In the process of organizing construction, it is necessary to make a huge number of operational decisions, analyze information and form tactical tasks, and build a production management strategy. The article examines the model of the working time monitoring system formed by the authors using smart helmets trackers, the interface of the created solution for the engineering and technical personnel of the construction site “Digital Worker”, a dashboard for viewing reports on the work of the “Architect-Web” organization for company leaders.
Stability analysis of pit slopes in Zapadno-Ozerny quarry to ensure mine safety
Authors: Pykhteeva N.F. , Andreeva O.N. , Koltsov P.V.
Published: January 2024

The article discusses the design parameters of open pit slopes and the approach to calculating the stability of open pit slopes. The main deformations of slopes of open pits are considered. An assessment of the influence of the stress-strain state of quarry slopes on their stability is made. On the example of an open pit at the Zapadno-Ozernoye field, the assessment of stability under the actual stress-strain state of the site was performed. Recommendations to determine the new boundaries of the open pit, in which the section of the South Eastern slope of the open pit will be stable are given.
An integrated review and analysis of urban building seismic disaster management based on BIM-GIS
Authors: Maltseva Irina , Meng Tianxin , Xiao Shuoting , Cao Yizhi , Zeng Lingjian
Published: January 2024

Given the increased frequency and destructive nature of seismic events, the exigencies for enhanced management protocols for urban edifices in the milieu of seismic disaster scenarios have intensified. The role of Building Information Modeling (BIM) and Geographic Information Systems (GIS) in the governance of seismic-induced disasters is integral and merits recognition. The synergistic application of BIM and GIS technologies empowers the strategic articulation of measures that substantially abate the potential hazards associated with seismic events. The present manuscript conducts a comprehensive review of the applications of BIM-GIS synergy in the domains of seismic disaster prevention, emergency response, and in the evaluative and recovery phases following such calamities. It also examines the associated data paradigms and advancements in data interoperability techniques while addressing the prevailing limitations within the scope of contemporary research. This study endeavors to enhance the acumen of urban disaster management operatives in discerning and capitalizing on the collective strengths of BIM and GIS, with the aim of optimizing urban strategies for managing seismic disasters and diminishing the resultant losses sustained by the populace.
Analysis of visual environment parameters using VR tools
Authors: Kudryashov Aleksey , Tvorogova Maria , Tryapitsyn Alexander
Published: January 2024

Interest in the use of VR technologies for industrial and educational purposes is growing. This makes it relevant to study security issues when using virtual reality devices. The authors measured the frequency characteristics of the image on a VR device depending on the source (an image obtained directly from the cameras of the VR device and an image modeled directly by the device itself), the set brightness level and the refresh rate mode of the device. Instrumental studies have confirmed the existence of technical grounds for the negative impact of VR headsets on human visual analyzers. The optimal technical parameters of VR devices have been determined. It becomes expedient to carry out work on the development of a regulatory framework, that will regulate the technical parameters and permissible modes of use of VR devices.
On numerical and approximate analytical modeling of single- and two-photon Young's experiment using the photon coordinate wave function
Authors: Davydov Alexandr , Zlydneva Tatiana
Published: January 2024

In modern areas of photonics, the physical description of the interaction of photons with matter in the control, transmission and registration of single-photon and two-photon states implemented in practice is of great importance. An appropriate acceptable description may be faced with the need to take into account various kinds of interference effects associated with these states. Meanwhile, even the most “simple” case of single-photon interference in Young's experiment requires the use of a rather complex apparatus of quantum electrodynamics. This article explains one- and two-photon interference in Young's thought experiment based on the photon wave function (PWF) in coordinate representation. This explanation is illustrated by two examples of wavelengths: 10.6 μm and 1.5 cm. For both examples, two approaches to PWF modeling are used: “purely quantum-mechanical” and “quasi-classical”. In the first approach, a 6-component coordinate PWF is constructed using a spherically symmetric momentum distribution in a wave packet, followed by numerical and approximate analytical calculations. In the second approach, a one-component “quasi-classical” PWF is constructed, which corresponds to either electric dipole radiation or simulated spherically symmetric radiation. In all cases, the same pronounced interference pattern was obtained, which allows us to conclude that not only the quantum-mechanical coordinate PWF is able to explain the phenomena of one- and two-photon interference, but also a much simpler “quasi-classical” PWF. This conclusion sheds light on the theoretical interpretation of the measurement of the coordinate PWF in some recent experiments.
Improving intellectual property management for organizations working in the field of additive manufacturing
Authors: Somonov Vladislav , Nikolaev Andrei
Published: January 2024

The article is devoted to the problems that arise for state budget organizations in the management of intellectual property objects created in the field of additive manufacturing in the Russian Federation. The possibilities of their elimination by creating changes to the existing methodological documentation are considered. The paper examines the methodological documentation of leading universities on the creation of developments in the field of additive manufacturing in this country, and offers suggestions for its improvement.
The content of phenolic compounds Allium gunibicum Miscz. ex Grossh
Authors: Alibegova Asiyat , Dibirov Magomed
Published: January 2024

The article presents the results of the study of the total content of phenolic compounds in the aboveground and underground parts of A. gunibicum, which grows in the areas of mid-mountain limestone Dagestan. Samples from introduced and natural populations were studied using spectrophotometric methods. The variability of the content of flavonoids and anthocyanins was revealed depending on the studied part of the plants and the place of collection of raw materials. In plants from natural habitats, the content of flavonoids and anthocyanins is higher than in samples grown under culture conditions. The obtained results indicate the dependence of the accumulation of these compounds on the environmental factors of the place of growth of the samples, and can be used to solve a number of problems of the chemotaxonomic direction.
Edible honeysuckle as a source of fruits promising for new functional food products development
Authors: Inyushkina Elena , Kavelenova Lyudmila , Kazakov Arseny , Rozno Svetlana , Romanova Irina
Published: January 2024

The possibilities of introducing honeysuckle berries into the plant-based functional product being developed as a component that enriches its composition are discussed basing on initial results of an experimental evaluation of the introduction of original lozenges based into the diet of laboratory animals (rats). The lozenges were prepared using apple pulp with the addition of mixed berries of five honeysuckle varieties (Berel, Sinichka, Moskovskaya M103 (L. caеrulea varieties), Kamchadalka and Chelyabinka (L. kamtschatica varieties). the most variable for used berries was the sugar content in the juice (from 8 to 11%), somewhat less the content of the ash component and the amount of phenolic compounds differed, but dry matter content (about 12% for all varieties) was similar. The highest polyphenols accumulation was detected for Sinichka variety (8.3 mg/g fresh fruit weight). The two-month consumption of functional lozenges with honeysuckle in a volume of 50% of the daily diet led to a decrease in systolic pressure in the experimental group of rats by 19% compared to the control. Also this diet resulted in less weight gain in experimental animals, their body weight was 30% less than that of control rats after a two-month exposure.
Tree vegetation viability of the Murmansk urban ecosystem
Authors: Aleksandrova E.Yu. , Trotsenko A.А. , Zhuravleva N.G. , Minchenok E.Е.
Published: January 2024

This paper aims to analyze the woody vegetation viability of northern territories. The research objectives were as follows: (1) to study the predominant species of woody vegetation in public gardens and alleys in Murmansk; (2) to identify groups and categories of trees quality conditions; and (3) to calculate the average coefficient of trees condition for the city. To conduct the research, we used the method guidelines for the stand viability assessment in July 2020, and we studied a total of seven sites (1,252 specimens of trees). According to the methodology, we identified three groups of trees conditions. We noted that the public green spaces in Murmansk are within the minimum norm for the cities in the tundra zone, with landscaped objects slightly below the normative values. The predominant trees in the studied public gardens and alleys are Sorbus species. The research showed that most trees are of satisfactory quality and belong to the “weakened category.” We recorded the following types of damage: frost cracks, bare trunk, insufficient leafage, small leaf plates, trunks’ bending and tilting. The main factors affecting the condition of woody vegetation in Murmansk are abiotic factors (wind, frost, heavy rain, hail, sharp temperature fluctuations). Biotic factors and human activity have a lesser impact. The city annually carries out sanitary work to cut down dead branches and give the landscaping objects aesthetic value. The novelty of the research is in the fact that the assessment of the trees in Murmansk in 2020 was carried out for the first time; the previous works are dated 2013–2017.
Overcome discrimination for older workers to achieve equality and sustainable development
Authors: Gurieva Lira , Dzhioev Aleksandr
Published: January 2024

Transformation of the world population age structure happens at a fast pace and creates problems of increasing social expenditures. However, Industry 4.0 technologies create large-scale opportunities for extending the labor activity of the older population. In Russia, share of people over working age is 22%, and it will increase by another 15% in next 30 years. At the same time, older people are discriminated in the labor market. The article is devoted to the study of job and salary discrimination of elderly workers in the Republic of North Ossetia-Alania as a typical Russian region with tight labor market and a deteriorating demographic situation. Methods of statistical and graphical analysis, factual and sociological research were used. Conclusions have been drawn about the predominance of the model of preserving the employment of older workers in public administration, education, science and health care; the influence of the indexation rate of pensions for non-working pensioners on their informal employment; the preservation of wage disparities for older people employed in the regional economy. The internal gender and age discrimination that has developed in the field of remuneration of older age groups has been revealed: discrimination of women's labor in all age cohorts and types of employment; inter-cohort discrimination of older men's labor within one type of employment; discrimination of wage growth rates of employees of different types of employment. Measures to improve the efficiency of regulating the employment of older workers are proposed.