bluuebunny/crossref_metadata_2025 huggingface dataset:
Evolution of the Concept of Geospatial Positionality: Conceptual and Term Dimension
Authors:   Ivan Franko National University of Lviv, Vlakh M.R.
Published: November 2023

The content of the general geographical concept of geospatial positionality (geopositionality) is revealed in the context of the relation of a single object / place with geospace, as well as the function of geoplace. Conceptual and terminological analysis of the concept is carried out in formal and semantic aspects. Using an explanatory dictionary of the modern Ukrainian language highlighted the meaning of placementtokens (position, location, positioning, neighborhood, proximity / remoteness) and the possibility of their use in geographical texts. Based on the study of scientific sources, object-centric, functional and integrated logical models of the concept of geopositionalityareelaborated. The directions of evolution of object-centric interpretation of the concept are revealed: clarification of the token of relation (sum of relation, set of relation, combination of relation, integral of relation; spatial, geographical, territorial, geospatial relations; spatial aspects of relation); determining the geopositionality of objects of ever smaller spatial coverage; the dominance of the ‘external’ approach to content disclosure; multiscale; potentiality. The functional model of the concept of geopositionality is created through the sequential deployment of the features, relations, potential, functions of geoplace. The semantic triangle of the concept of geopositionality of the object in the unity of its aspectsmeaning and conceptual content is developed. The main attributes of geopositionality (uniqueness / specificity, distance, potentiality / probability, hierarchy / multiscale, dynamism / historicity / variability) are highlighted, and their effect on different logical models are shown. The main directions of development of the concept of geopositionality are defined: nomination of features of geospatial relations of linear, areal, network geoobjects; nomination of dynamism of geopositionality of objects; positioning in relation to geospatial processes; mutual enrichment of semantically closest geopositional concepts; correct application of content and quantitative research methods for mathematical formalization and interpretation of geospatial relations of position and functioning. The classical, non-classical and modern stages in the development of the concepts of geospatial positionality are distinguished.
Peripheral Nerve Stimulation for the Management of Pediatric Neuropathic Pain
Authors: Gargya Akshat , Zats Alan , Lake Tiffini
Published: November 2023

The management of neuropathic pain in children poses an enormous challenge for pediatricians and pain management physicians. Current treatment options include physical therapy and medication management. Peripheral nerve stimulation/neuromodulation is a novel and minimally invasive treatment that can be initiated and monitored in an outpatient setting. This new technology can be a useful tool for treating pain secondary to pediatric neuropathy and chronic refractory pain after conservative management. Our case report describes the use of a peripheral nerve stimulator in the successful management of pediatric neuropathic leg pain.
O Golpe de 1964, no Brasil, pelas páginas do jornal Ultima Hora (UH)
Authors: Fidelis Thiago
Published: November 2023

O artigo analisa como o jornal Ultima Hora (UH) representou o golpe de 1964 em suas páginas, nos primeiros meses do ano. Tal aspecto justifica-se por essa publicação ter uma das maiores circulações no Brasil e, diferentemente dos outros diários impressos, ter um posicionamento favorável ao governo de João Goulart, não coadunando com as movimentações oposicionistas que defendiam, abertamente, uma intervenção militar para derrubar o então mandatário e que recebiam ampla acolhida na imprensa de grande tiragem, conforme apontado em extensa bibliografia sobre o assunto. Como resultado, o texto apresenta que a UH manteve-se coerente com sua cultura política desde a sua fundação, em 1951, defendendo os princípios trabalhistas e as práticas ligadas a Getúlio Vargas, considerando que Goulart era uma espécie de “herdeiro político” de Vargas e, segundo a UH, era atacado exatamente por esse aspecto, uma vez que os grupos opositores, civis ou militares, não aceitavam a consolidação de um governo cujas bases remetiam a esse modelo de organização do país.
Chakras in the Boardroom: Integrating Ancient Wisdom with Modern Business Practices for Enhanced Emotional and Spiritual Intelligence
Authors: Ratmayanti Nyoman Gita Saraswati , Nugroho Albertus Henri Listyanto , Darmawan I Made Dwi Hita , Wiratama Awang Bagas
Published: November 2023

This study explores the application of chakra philosophy in business management practices. Chakras, defined as energy centers within the human body, are intricately linked with daily human dynamics and spiritual consciousness. The aim of this study is to integrate chakra principles into managerial processes and assess their impact on emotional and spiritual intelligence, performance, accountability, and business sustainability. A qualitative approach was adopted for this study, focusing on four chief executive officers as research subjects. Data collection was conducted using triangulation techniques, including document analysis and semi-structured interviews. The results indicate that the implementation of chakra philosophy by chief executives contributes to the stability of emotional and spiritual intelligence. This, in turn, enhances performance, accountability, and the sustainability of the business. This research contributes a novel perspective by elaborating on the application of chakra philosophy in business management. It offers a new approach to managing and sustaining a company by considering individual management aspects and organizational culture.
Identification of patterns of strength formation of concrete using cement Portland Pozzolan (PPC) and waste tire powder in the condition of seawater curing
Authors: Sihombing Sahat Martua , Yudiatna Dodi Tresna
Published: November 2023

According to the national standard body in Indonesia, the compressive strength of 20 MPa concrete is medium quality concrete. Medium-strength concrete is usually used for floors, light construction, houses, warehouse factories, and sidewalks. The use of medium-strength concrete is very broad, it is necessary to continuously conduct research to produce new innovations. Previous research on the utilization of waste rubber tires has been carried out. Research on the development of concrete with the use of waste tire rubber powder is very interesting to do considering the waste of used tires that continues to increase along with the increase in the number of motorized vehicles in Indonesia. Portland Cement (OPC) and Portland Pozzolan Cement (PPC) are the two types that will be used in this research to see its effect on concrete with waste rubber powder. These two cements also have different corrosion resistance. And seawater is one of the triggers of high concrete corrosion. Research on the development of concrete with the use of waste tire rubber powder is very interesting to do considering the waste of used tires that continues to increase along with the increase in the number of motorized vehicles in Indonesia. Portland Cement (OPC) and Portland Pozzolan Cement (PPC) are the two types that will be used in this research to see its effect on concrete with waste rubber powder. These two cements also have different corrosion resistance. And seawater is one of the triggers of high concrete corrosion.
This study aims to analyze how the compressive strength of PPC concrete compares with OPC and the addition of used tire powder under seawater treatment conditions. Six concrete variants were made and then tested for compressive strength. The compressive strength values of variants 1 to 6 were obtained as 20.78 MPa, 18.26 MPa, 19.56 MPa, 16.58 MPa, 13.03 MPa. The results show that tile powder is not effective in increasing construction strength, but the use of PPC cement is more effective than the use of OPC in improving construction, especially for cement use in buildings close to sea water
Forklift selection by multi-criteria decision-making methods
Authors: Dua Tran Van
Published: November 2023

A forklift is a very important and common equipment for transporting materials in many different locations such as workshops, warehouses, supermarkets, etc. This equipment has the effects of reducing labor consumption of workers, ensuring the safety of goods and improving labor efficiency. That is why forklift selection is very important. In order to choose a forklift, it is necessary to consider many parameters such as lifting capacity, lifting height, travel speed, safety level, price, maintenance cost, level of impact on the environment, ease of use, etc. However, today there are many types of forklifts on the market, these forklifts have different specifications and prices, making it difficult for shoppers to choose a product in many available types. This study has applied multi-criteria decision-making (MCDM) methods for forklift selection. Two MCDM methods having been used are the COCOSO (Combined Compromise Solution) method and PIV (Proximity Indexed Value) method. Two different methods having also been used to calculate the weights for the criteria are the ENTROPY method and MEREC (Method based on the Removal Effects of Criteria) method. The selection of the best type of forklift applies to the six available types. Six criteria having been used to describe each alternative are lifting height, maximum lifting height, minimum lifting height, fork length, fork width, and price. Each MCDM method will be used in combination with two weight methods. Thus, the ranking results of forklifts are shown in four different series of numbers. An amazing result has occurred that the best and worst forklifts have been consistently determined to be the same in all cases examined. This is the outstanding advantage of the COCOSO and PIV methods compared to other MCDM methods.
Design and implement a real-time network traffic management system using SNMP protocol
Authors: Alhilali Ahmed Hazim
Published: November 2023

The research focuses on designing and implementing a system for managing incoming server traffic using the Simple Network Management Protocol (SNMP). The essence of the method is to provide a real-time monitoring system that empowers network managers to oversee all network activities efficiently. The key difference of the developed system lies in using the SNMP protocol to monitor and control the network without needing a third-party tool. The proposed approach addresses administrators' common network challenges, including inefficient bandwidth utilization and complex network resource monitoring. Upon implementation, the system gathered essential network equipment information from the Management Information Base (MIB). The research results indicate that the SNMP-based network management system prevents network devices from reaching their allotted bandwidth limits. The system notably reduces CPU utilization from 28 % to 8 % and decreases bandwidth usage from 1.7 MiB/s to 260 bytes/s. Additionally, the system's alerting capability enhances the network's resilience against incoming traffic anomalies that may otherwise interrupt server operations. An example of using the proposed system to manage incoming server traffic in small networks. It has several practical uses in managing and maintaining network infrastructure in different fields. Also, it enables real-time monitoring of network devices, resource management, fault detection, and performance optimization. The system can be used in small organizations to monitor network performance, track faults, and manage network resources efficiently. In addition, SNMP-based network monitoring systems can find applications in almost any field where networked devices and infrastructure require monitoring, management, and optimization
Deformation features of trunk pipelines with composite linings under static loads
Authors: Moldagaliyev Arman , Zhangabay Nurlan , Suleimenov Ulanbator , Avramov Konstantin , Raimberdiyev Talzhan , Chernobryvko Maryna , Umbitaliyev Altynsary , Jumabayev Atogali , Yeshimbetov Shairbek
Published: November 2023

This paper considers the deformation process of a typical section of a steel trunk pipeline with a defective zone, strengthened with a carbon fiber composite lining, under the influence of stationary internal pressure. Defects in the form of thinning of the pipe thickness and cracks were investigated. The stressed-strained state of the structure at critical pressure was analyzed. The thickness of the composite lining was determined, at which the bandage compensates for the effect of internal pressure on the damaged section of the pipeline. Research was carried out numerically based on finite element modeling in the ANSYS software package.
When studying the stressed-strained state of a pipe with a defect of an arbitrary complex shape under the influence of critical pressure, a compensating value was obtained. The result showed that a carbon fiber lining with a thickness of 17 % of the rated thickness of the pipe could completely compensate for the effects of internal pressure in the defect area. In this case, the stresses in the carbon fiber lining were close to minimal. When studying the stressed-strained state of a pipe with a large crack of arbitrary shape at critical pressure, a compensating value was also obtained.
It has been established that to compensate for the concentration of internal pressure in the crack zone, the thickness of the composite lining should be at the level of 34 % of the rated thickness of the pipe. In this case, the deformation of the steel pipe in the area of the crack occurs in the elastic region. The exception is the crack tips, where plastic deformations are observed, and stresses arise up to 93 % of the ultimate strength of the pipe steel. At the same time, the stresses in the carbon fiber lining remain close to minimal. Thus, it is recommended to use carbon fiber linings with a thickness of 17 % or more of the rated pipe thickness to bandage damage constituting up to 75 % of the thickness of a steel pipe. To bandage cracks, it is recommended to use carbon fiber linings with a thickness of at least 34 % of the rated pipe thickness
Identifying the influence of orbital pipe welding parameters on mechanical properties using SS316L pipe
Authors: Prasetyo Eko , Baskoro Ario Sunar , Widyianto Agus , Kiswanto Gandjar
Published: November 2023

Pipeline systems play a pivotal role across various industries, serving as the lifelines for transporting materials like oil, water, and gas. Among the welding techniques, orbital pipe welding, particularly Gas Tungsten Arc Welding (GTAW) without filler metal, is the fitting method for joining these critical piping systems. This study examined orbital pipe welding on SS316L pipes with a 114-mm outer diameter and 3-mm thickness. The main goal was to evaluate the weld's tensile strength and microhardness carefully. Constant current and three welding speeds – 1.3, 1.4, and 1.5 mm/s – achieved this goal. In addition, welding experiments covered 0°, 90°, 180°, and 270° pipe positions. First, the necessary tools and test objects were prepared, and then the test materials were welded. The final phase was testing tensile strength and microhardness. This investigation used a 5G-specific prototype orbital pipe welding equipment. The 5G method requires horizontal welding with the vertical pipe axis. The study used ASTM E-8M-compliant standardized test material for precise and repeatable tensile strength measurements. This standardization ensured outcomes reliability. One of the significant findings was that 1.4 mm/s welding at the 270° pipe position with 110A current produced the maximum tensile strength. This shows that these conditions are best for welding SS316L-type stainless steel pipes with an outside diameter of 114 mm and a thickness of 3 mm. Strangely, microhardness testing showed that horizontal distribution welding quality decreased at 1.4 mm/s. This implies that further experimentation may be needed to fine-tune the welding parameters to optimize the process and achieve superior microhardness values.
Degradation of oil and oil products by microorganisms isolated from the Azerbaijani coast of the Caspian Sea at low temperatures
Authors: Babashli Aynur , Akhundova Nazilya , Gadimova Natavan
Published: November 2023

The object of the study is microorganisms isolated from the Azerbaijani territory of the Caspian Sea, capable of decomposing oil and oil products at low temperatures of 4–6 °C. The purpose of this work was to study bacteria and fungi capable of actively assimilating oil, gasoline, kerosene, diesel fuel at a temperature of 4–6 °C in order to solve the problem of environmental pollution in this region.
The studied most effective biodestructors are combined into associations that can be used to create an active biological product based on native microorganisms with its further use for water bioremediation, as well as treatment of tanks and other containers used for long-term storage of petroleum products at a temperature of 4–6 °C.
The process of degradation of samples of used oils at the molecular level of the selected compounds was studied by reverse-phase high-performance liquid chromatography. As a result of chromatographic and spectroscopic studies, it was found that almost all microorganisms decompose the tested oil products. Only weak peaks remained on the chromatogram, which is a clear indicator of the deep biodegradation carried out by these microorganisms. Thanks to the chromatographic and spectral analysis of oil and products of its decomposition, an oxidation sequence has been established, indicating the decomposition of the last aromatic fraction. As a result, a general picture was obtained on the amount of degradation products containing carboxyl, keto-, hydroxyl groups, which is not enough to determine the processes of transformation of initial products into final ones. All this testifies to the multidirectionality of biodegradation processes
Comparing the efficiency of strengthening timber beams reinforced with carbon composite rods and plates
Authors: Bula Serhiy , Pelekh Andriy
Published: November 2023

This study reports the results of experiments comparing the effect of structural reinforcement for timber beams strengthened with different carbon composite materials. Samples of one series were strengthened by gluing a carbon fiber plate from the outside to the face of the beam. The samples of the other series were strengthened by laterally gluing two carbon fiber rods inside the beam.
According to the bending research program, the ultimate loads and deflections were determined for both series. As a result of the analysis of the results and comparison with unreinforced samples from the control series, the effect of beam reinforcement and the model of their destruction were determined. Studies have shown that the effect of external reinforcement with a plate was 86.7 % according to the criterion of full failure load, 20.5 % according to the criterion of ultimate load, 13.4 % according to the criterion of ultimate deflection. The effect of rod reinforcement was 48.6 %, 18.6 %, and 4.1 %, respectively. The theoretical analysis of the results showed a convergence of up to 8.2 % with the experimental results.
External reinforcement with a plate compared to lateral gluing of rods showed better results due to the placement of the plate in the zone of maximum tensile stresses. This arrangement more effectively limited the spread of ultimate stresses and the development of cracks.
The reinforcement parameters of the samples (materials, placement, percentage of reinforcement) were selected under the condition of the same theoretically predicted bearing capacity after reinforcement. However, comparative experimental studies have revealed differences in the processes of deformation and destruction of reinforced beams.
The results will contribute to making rational project decisions and for choosing a relevant technique of strengthening timber beams with carbon composite materials
Detecting the influence of uneven loading of the brake shoe in a freight car bogie on its strength
Authors: Panchenko Sergii , Lovska Alyona , Ravlyuk Vasyl , Babenko Andrii , Derevyanchuk Oleksandr , Zharovа Oksana , Derevianchuk Yaroslav
Published: November 2023

The object of the study is the processes of occurrence, perception, and redistribution of loads in the brake shoe of a freight car bogie during braking. In order to ensure the safety of the movement of freight cars, a study of the uneven load on the bogie shoe of the model 18-100 freight car was carried out. A mathematical apparatus was built to determine the strength of the brake shoe, taking into account the uneven load transmitted to it from the brake pad. In this case, the brake shoe was considered in the form of a frame with variable stiffness. It was established that the stresses that occur in the shoe exceed the permissible ones. To test the proposed mathematical apparatus, a computer simulation of the strength of the brake shoe was carried out. In this case, the finite element method, which is implemented in SolidWorks Simulation, was used. The difference between the results obtained by mathematical modeling and computer simulation was 5.7 %.
A feature of the research results is that they make it possible to determine the moment of resistance, and accordingly, the stresses that act in the shoe along its length. This will make it possible to design its fundamentally new structure at the subsequent stages.
The field of practical application of the reported results is the engineering industry, in particular, railroad transport. The conditions for the practical application of the research results are to ensure the strength of the shoe during braking of the rolling stock in operation.
The study will contribute to advancements in improving the reliability of the braking systems of bogies, as well as ensuring the manufacturability and maintainability in the construction, operation, and repair of the components of the mechanical part of brakes for the new generation freight cars
Influence of the facade slope on fire propagation processes on higher floors
Authors: Ballo Yaroslav , Nizhnyk Vadym , Veselivskyy Roman , Kagitin Oleksandr
Published: November 2023

The study considers the issue of the influence of the structural parameters of the facade on the processes of fire propagation through the external enclosing structures of buildings. The object of the study is the process of temperature changes on the surface of the inclined external enclosing structures of the building due to the action of fire.
The study of the influence of the angles of inclination of the facade on the processes of fire propagation and the nature of temperature distributions on the surface of the facade was carried out. During the research, the methodology of experimental tests was used to limit the spread of fire along the facades using an installation that allows you to reproduce the angles of inclination. As the studied fragment of the facade, an external enclosing structure made of non-combustible materials without external cladding was used. Thermocouples were placed on the surface of the facade, which made it possible to obtain temperature data near its surface in real mode throughout the duration of the research.
A class 34B model fire source provided a fire load of at least 2,200 MJ/m2 and an average temperature of 800–850 °С throughout the duration of the research.
It was found that in the presence of a slope of the facade at an angle of +20°, an increase in temperature near the surface of the studied area by 24–26 % was observed. In the presence of an inclination of the facade at an angle of –20°, a decrease in temperature near the surface of the studied area by up to 55 % was observed.
The obtained dependences will make it possible to review the approaches to the existing field methods of fire hazard assessment of facade systems. The practical result of the implementation of the obtained data may be the introduction of changes to building regulations to increase the level of fire protection of facade systems and buildings in general
Construction of a model of steganographic embedding of the UAV identifier into ADS-B data
Authors: Semenov Serhii , Zhang Minjian , Mozhaiev Oleksandr , Kuchuk Nina , Tiulieniev Serhii , Gnusov Yurii , Mozhaiev Mykhailo , Strukov Volodymyr , Onishchenko Yurii , Kuchuk Heorhii
Published: November 2023

Secure data exchange in the control system of unmanned aerial vehicles (UAVs) is an important aspect for preventing unauthorized access and safety of aerial vehicles. Given the problems of automatic dependent surveillance-broadcast (ADS-B) data protection, the safety level of UAV flight tasks and air traffic in general is significantly reduced. Therefore, the protection of ADS-B data is an urgent task. The object of the study is the process of steganographic protection of ADS-B format data. A relevant problem of estimating the probabilistic time characteristics of the steganographic protection process is solved, taking into account the features of data embedding in the ADS-B format container. To solve it, a mathematical formalization of the methods of finding probabilistic-temporal characteristics of steganographic systems was carried out. A model of steganographic data transformation operations based on the Chinese remainder theorem has been built. The main difference of the model is taking into account the features of the ADS-B format data. This made it possible to formalize and evaluate the time functions of steganographic encoding and decoding of UAV identifiers with an integrated ADS-B system. A model of steganographic data transformation operations based on the finite integral ring theorem has been constructed. A list of operations performed in the developed algorithm has been compiled. This made it possible to carry out mathematical formalization of operations for complex use in the model of steganographic protection of UAV identifiers with a built-in ADS-B system. The mathematical model was studied and the estimation of the random value of the time of steganographic transformation of data, as well as the confidence interval, was performed. With the help of the reported set of models, it is possible to estimate the probability of the algorithm’s execution time falling within the given interval. The results of the calculation of probabilistic-time characteristics could be used in models of a higher level of the hierarchy
Establishing the regularities of blending functional purpose juices based on watermelon juice
Authors: Zhumaliyeva Gulzhan , Chomanov Urishbai , Tultabaeva Tamara , Kenenbay Gulmira , Aktokalova Gulnara , Tultabayev Nurzhan , Kasymbek Rabiga , Tultabaev Mukhtar
Published: November 2023

The objects of the research are fruit and berry juices from watermelon, rosehip, apples and pumpkin. The influence of the physico-chemical parameters of fruit and berry juices on the process of storage and blending is investigated. It has been found that quantitative regulation depending on the physico-chemical parameters of fruit and berry juices during the development of blended juice technology makes it possible to develop a drink with a long shelf life. The developed juices should satisfy the body's needs for vitamins and minerals in food necessary for the normal development of the body. Based on research, watermelon-pumpkin-rosehip juice is recommended.
However, the consumer properties of natural juices depend on the variety and climatic conditions of growth. The climatic conditions of growth and the variety significantly affect the physico-chemical parameters of the juices obtained from them. All this allows us to assert that it is advisable to conduct a study devoted to establishing the influence of the physico-chemical parameters of fruit and berry juices based on watermelon juice on the process of storage and blending.
Juices are the most technologically advanced product for creating new types of functional nutrition. In addition, they contain a complex of vitamins and minerals in their composition.
In connection with the above, the development of technology and the organization of the production of functional purpose juices are the solution to problems related to nutrition.
It is found that the resulting new product – watermelon-pumpkin-rosehip drink will allow you to get a new product with high quality indicators and expand the range of fruit and berry drinks based on watermelon juice
Vehicle routing problem optimization with machine learning in imbalanced classification vehicle route data
Authors: Novelan Muhammad Syahputra , Efendi Syahril , Sihombing Poltak , Mawengkang Herman
Published: November 2023

The object of this research is a combinatorial optimization problem arising in the problem of the route of goods delivery vehicles. In this study, the proposed method for solving combinatorial optimization problems consists of several stages: Data Cleaning, Data Preprocessing, K-NN and Cavacity Vehicle Routing Problem model. The results show that the machine learning approach can optimise combinatorial optimization problems, especially in generating vehicle route points and delivery capacity. The characteristics in determining vehicle routes by considering latitude and longitude points. This research builds a framework and implements it in a multi-class optimization model to reduce overfitting and misclassification results caused by unbalanced multiclassification from the influence of the number of 'nodes' on vehicle routes with machine learning. The purpose of the model in general is to gain an understanding of the mechanism in the problem so that it can classify unbalanced vehicle route data based on Jalur Nugraha Ekakurir delivery routes. So that with the availability of the model can be a model in determining vehicle routes based on the capacity limit of the number of shipments of goods. The results of research with machine learning models and vehicle routing problems with testing K values 11, 13, 15. Where it has a percentage of K=11 accuracy 57.3265 % and K=13 accuracy 57.3265 % and K=15 accuracy 81.8645 %. From the test results with odd K values have better accuracy and the K 15 K=15 value is better with a percentage of 81.8645 % compared to K 11 K=11, and 13 K=13. As a result, the developed model in terms of accuracy of the cavacity vehicle routing problem model has an accuracy of 93.80 % and the time series achieves an average precision of 93.31 % and with a recall value of 93.80 %. The results obtained can be useful in developing a more modern model, Cavacity Vehicle Routing Problem with Machine Learning
Construction of the stochastic model of thermal radiation from a flammable liquid spill fire
Authors: Oliinyk Volodymyr
Published: November 2023

The object of this study is the process of liquid combustion in the pool, and the subject of the study is the characteristics of the random process that describes the heat flow by radiation. Such, in particular, are the law of distribution, mathematical expectation, and correlation function. An experimental study of the combustion of used motor oil in a pool measuring 9.5×8.7 m2 was carried out. The mathematical expectation and variance of the cross-sectional area of the flame were determined by video recording followed by the analysis of individual frames. Testing of the hypothesis about the normal law of distribution of the cross-sectional area showed that with a confidence probability of 0.95, the proposed hypothesis does not contradict the experimental data. A selective correlation function and its approximation in the form of σ2exp(–α|τ|) were constructed. Due to the linear relationship between the cross-sectional area and the heat flux by radiation from the fire, the latter will also have a normal distribution law. At the same time, the magnitude of pulsations (the ratio of the rms deviation to the mathematical expectation) for these random processes will be the same. The value of the parameter α of the correlation function will also be the same.
Taking into account the inertial properties of the device for measuring the heat flux density, a comparison of the experimentally measured values of the heat flux density with the calculated ones was carried out. The measurement results fall into the intervals corresponding to the confidence probability of 0.95. At the same time, the maximum deviation between calculated and experimental data is 14 %. From a practical point of view, the built stochastic model opens up possibilities for taking into account random flame pulsations when determining safe zones for the location of personnel and equipment. The model can be used to specify the thermal effect of fire on steel and concrete structures
A research analysis: the implementation of innovative energy technologies and their alignment with SDG 12
Authors: Kunskaja Svetlana , Bauer Johannes Fabian , Budzyński Artur , Jitea Ilie-Ciprian
Published: November 2023

The object of the research is the alignment of innovative energy technologies with the Sustainable Development Goal (SDG) 12, which pertains to sustainable consumption and production. The problem to be solved – there is an ambiguity regarding how these technologies contribute to SDG 12. This study aims to conduct a strategic analysis of external factors influencing innovative energy technologies from the perspective of SDG 12. The results show that innovative energy technologies, like bioenergy, geothermal energy, solar energy, wind energy, hydropower, and ocean energy, enhance energy efficiency, cut emissions, and reduce waste and toxins. These technologies align with SDG 12 and are shaped by various legislations. They intersect with the shift from fossil fuels, requiring analysis in the context of other UN SDGs. Legal frameworks must adapt to innovative energy technologies. The findings highlight that innovative energy technologies support SDG 12 by ensuring energy efficiency and reducing emissions. These technologies address economic and environmental challenges, promote sustainable progress and economic growth, enhance business competitiveness, stabilize prices, diversify energy sources, ensure national energy security and reduce energy poverty. The scope and conditions for practical application of the results of this research provide valuable insights for the scientific community, energy companies, policymakers, and investors in the energy sector. They can be used to inform decisions and strategies aimed at aligning energy technologies with the objectives of SDG 12. However, the implementation and effectiveness of these technologies also depend on regulatory support, industry collaboration, and public acceptance of new energy solutions.
Determining the pattern of direction and distribution of intermetallic phase in the eutectic of the weld material after electron-beam welding of titanium and niobium alloys
Authors: Loboda Petro , Zvorykina Anastasiia , Vrzhyzhevskyi Eduard , Taranova Tatjana , Kostin Valery , Zvorykin Volodymyr , Zvorykin Leonid
Published: November 2023

This paper reports a study whose object was material of the weld. The nature of changes in the microstructure of the weld material, which are caused by changes in the supplied energy, alloying elements and heat removal from the melt area, was investigated. Welding was performed with an electron beam at Uacc=60 kV, Ieb=90 mA, with an elliptical sweep of 3×4 mm. The speed of electron beam movement veb was varied from 7 to 15 mm·s-1. The temperature of the experimental welded samples T0 was varied from 300 K to 673 K. Ti-TiB alloy (a microcomposite alloy with reinforcing TiB fibers) was welded with Ti-TiB alloys, T110, and with niobium. One of the tasks of welding this alloy was to preserve and optimize the structure of this type in the weld. Grinding of boride fibers, loss of their initial orientation, and formation of a dendritic or cellular microstructure was observed in the weld.
Using the methods of raster electron microscopy and micro-X-ray spectral analysis, the microstructure of the weld material was investigated and the dimensional characteristics of TiB fibers under different welding conditions were determined. The analysis of changes in the microstructure of the weld material, the average length ᶏ and the thickness ȩ of the boride fibers in the material of the joints made at different velocities of electron beam movement and initial temperatures T0 was carried out. It was established that the growth of the ratio ȩ/ᶏ from 0.04–0.07 to 0.1–0.27 is accompanied by significant changes in the microstructure and the mechanism of formation of eutectic phases.
It is shown that the process that determines the formation of the microstructure of the weld material was the eutectic breakdown with the determining influence of the temperature gradient, crystallization rate, supercooling, concentration inhomogeneities, and alloying impurities.
Development system for coordination of activities of experts in the formation of machineschetable standards in the field of military and space activities based on ontological engineering: a case study
Authors: Utegenova Anar , Bapyshev Akylbek , Suimenbayeva Zhanna , Aden Alisher , Kassym Ruslan , Tansaule Serikov
Published: November 2023

Standardization and technical regulation involve the digitization of international and regional standards into "smart" standards, introducing new requirements for the presentation of complex industrial manuals. The introduction of artificial intelligence and machine learning into the process of standardization, improving process automation, data analysis will provide an opportunity to create innovative standards. Creation of machine-readable standards and their presentation in the form of a database will contribute to better interoperability between systems.
The article demonstrates the method of ontological engineering for the automation of partial methodological examination of documents in accordance with the National Standardization Plan.
As part of the experiment, an independent tool was developed, based on the extraction of qualitative data, using an uncontrolled automatic keyword extraction algorithm. The algorithm does not require the creation of a learning corpus, can be applied to any text and language, and does not have limitations on the amount of processed data. The algorithm provides adjustment of the parameters of the repetition of keywords, with the possibility of taking into account less important keywords.
The work presents the following components: model classification standards, essence extraction module, categorization, thesaurus formation, monitoring and analysis. Calculations were carried out using formalization, determination of the target function, establishment of similarity measures, and description of document features. The work presents the theoretical aspect of application, design and description of the functional system.
Identifying the influence of basalt fiber reinforcement on the deformation and strength characteristics of cement stone
Authors: Kabdushev Arman , Delikesheva Dinara , Korgasbekov Darkhan , Manapbayev Bauyrzhan , Kalmakhanova Marzhan
Published: November 2023

The object of the research is the quality of cementing oil and gas wells with increasing the strength and deformation capacity of cement stone using basalt fibers.
Cement slurry used in cementing oil and gas wells faces the problem of failure under the influence of hydraulic fracturing and perforation procedures. This failure leads to the formation of cracks and may require remedial cementing, which increases operating costs and complicates the process of oil and gas production. Moreover, this problem can lead to premature well water breakthrough and cause serious damage such as oil and gas shows and blowouts, which poses a threat to the environment and safety. To solve the problem of the destruction of cement stone under external influences, the study proposed the approach of reinforcing with basalt fiber.
During the study, a cementing material based on Portland cement, reinforced with various concentrations of basalt fibers (0.1 %, 0.5 %, 1 % and 2 %), was developed and tested. Cement strength tests at 2, 7, and 14 days, along with deformation monitoring under load, were performed.
The addition of basalt fibers to cement stone significantly improved its strength characteristics. The most successful results were achieved with the addition of 0.5 % basalt fibers, resulting in an 11 % increase in compressive and flexural strength. Basalt fibers complement the structure of cement stone, increasing its ability to deform.
One of the key features of the obtained results is the possibility of improving the strength of the cement stone without losing its fluidity as a cement slurry.
The results obtained are applicable in the development and production of cement materials based on basalt fibers. This will improve the quality of well cementing and reduce the risks of complications
Evaluation of a biomass combustion furnace using different kinds of combustion chamber casing materials
Authors: Suluh Sallolo , Lorenza Dennis , Sampelolo Rigel , Pongdatu GAN , Ramba Dina , Widyianto Agus
Published: November 2023

This research systematically evaluates a biomass combustion furnace, focusing on the influence of varying combustion chamber casing materials. The study employs controlled laboratory experiments to investigate the impact of different casing materials on combustion performance, thermal efficiency, and practical applications such as water boiling capacity. The research uses distinct materials, including clay, steel, and aluminum, for combustion chamber casings while maintaining consistent dimensions. The central experimental apparatus, an aluminum stove, was meticulously crafted, adhering to precise measurements. Coconut shell briquettes served as the primary fuel source for this investigation. The results reveal intriguing dynamics in combustion behavior. Notably, the choice of combustion chamber casing material significantly affects fire temperature, sleeve wall temperature, thermal efficiency, and the ability to boil water. Clay emerges as a standout performer, achieving high thermal efficiency (56.8 %), substantial water boiling capacity (25 liters), and efficient fuel consumption (1.28 kg of burnt briquettes). However, steel casing materials excel in generating the highest fire temperatures (up to 557 °C), underscoring their exceptional heat-conducting properties. Aluminum has fast temperature responses but may not retain heat like clay. The findings help optimize biomass combustion furnaces and associated applications. Material selection is crucial to attaining combustion goals like efficiency, temperature generation, or practical heat. These discoveries could lead to more efficient and ecologically friendly biomass combustion systems for sustainable energy and resource use
SIMD implementation of deep CNNs for myopia detection on a single-board computer system
Authors: Al Jbaar Mamoon A , Dawwd Shefa A.
Published: November 2023

Deep learning algorithms, especially Convolution Neural Networks (CNN), have been rapidly developed due to their flexibility and scalability to be adopted in several fields for modeling real-world applications like object detection, image classification, etc. However, their high accuracy incurs intensive computations. Therefore, it is crucial to carefully choose a suitable computer platform and implementation methodology for CNN network architectures while achieving increased efficiency. Parallel architectures are prevalent in CNN implementation. Herein, we present a new Single Instruction Multi Data (SIMD) parallel implementation of the proposed CNN to speed up the execution process and make it suitable to deploy on low-cost, low-power consumption platforms. The proposed implementation produces an improved model of deep CNN executable on a cost-efficient platform and portability to work autonomously with multi-core processing units while maintaining working accuracy. Raspberry Pi 3 B is a low-power target device for implementing our model. The proposed approach is characterized by high diagnostic accuracy of up to 96.35 % while incurring power consumption of 3.65 Watts, achieving power reduction between 19.17 % and 68.45 % compared to the prior work. Meanwhile, it has a fine inference time for the selected platform. The outstanding results of this study reflect the success of employing parallel architectures to utilize the quad courses of the ARM processor on the target platform. The presented model can be an efficient medical assistant to provide automated detection and diagnosis for myopia ocular disease. Thus, it can be a promising healthcare toolkit that reduces the effort of the medical staff and increases the quality of the provided medical services for myopia patients
Assessment of iron and heavy metals accumulation in the soils of the combat zone
Authors: Trokhymenko Ganna , Litvak Serhiy , Litvak Olga , Andreeva Antonina , Rabich Olena , Chumak Larisa , Nalysko Mykola , Troshyn Mykhailo , Komarysta Bohdana , Sopov Dmytro
Published: November 2023

The object of the study is soils in areas with active military operations.
The study is dedicated to assessing the environmental impact of military operations through forecasting.
The paper highlights the impact of military conflict on the distribution of heavy metals in soils. An analysis of the distribution and interaction of heavy metals in soil is carried out, which helps to understand the dynamics of pollution in the context of military conflict, and allows to understand the complex processes of the impact of military operations on the environment and the state of soil resources.
The complex interrelationships between military operations and environmental pollution are revealed, with an emphasis on the importance of studying the distribution and immobilization of iron and heavy metals in the current conditions of the risk of military operations.
It is shown that the most rapidly distributed metals in the soil are: iron (Fe), zinc (Zn), cadmium (Cd), antimony (Sb); the slowest: arsenic (As), lead (Pb), copper (Cu), nickel (Ni), mercury (Hg), manganese (Mn), vanadium (V).
It was found that loams and chernozems are more prone to the accumulation of heavy metals and iron than sandy soils. Compared to sandy soil, the rate of metal release in loam decreases from 16.7 % to 69.7 %. In comparison of chernozem to loam, the release rate slows down from 17.85 % to 32.08 %. It was found that the rate of spreading of barium, cobalt, arsenic, lead, mercury, manganese, strontium and titanium does not depend on the type and mechanical parameters of the soil.
The practical use of the results will help to predict the mechanism of pollution spread and help to identify the highest risk areas. The results of the study indicate the need to develop scientifically sound strategies for environmental protection and promotion of sustainable development in the area affected by military events