Scientific Equipment Research Articles

An interactive augmented reality framework to enhance the user experience and operational skills in electronics laboratories

Augmented reality (AR) stands as a widely embraced technology that significantly enhances learning experiences for students. AR offers an instructional approach supported by technological design, thereby fostering enriched learning interactions. This research proposes an interactive AR framework, intended to create an augmented reality learning environment (ARLE) for the specific needs of electronics engineering laboratory hardware operations. The ARLE functions as an active learning system designed using a user-centered methodology. It offers interactive 3D models of laboratory equipment, providing learners with preliminary training in equipment operation. The real-time connection between the laboratory apparatus and the AR environment is established using the Arduino board. This interface empowers users to control the AR simulation through the laboratory equipment seamlessly. An experimental study involving 80 engineering students was conducted to evaluate the impact of AR intervention on user experience, usability, and operational skills. The participants were divided into two groups: the experimental group (N = 40) and the control group (N = 40). The experimental group underwent electronics equipment training using ARLE, while the control group followed instructions from a standard instrument handbook. To assess the usability and user experience of ARLE, the system usability scale (SUS) and the user experience questionnaire (UEQ) were employed (N = 40). The findings revealed an SUS score of 80.9 for ARLE, categorizing it as “good” according to SUS ratings. Additionally, the UEQ results demonstrated significantly favorable scores across the six scales when compared to the benchmark dataset. The study's outcomes demonstrate that AR intervention offers learners significant pedagogical value, resulting in a substantial positive impact on operational skills in electronics laboratories.

ПРИНЦИП СУБЪЕКТИВНОЙ ИЗБЫТОЧНОСТИ И МЕТОД СЖАТИЯ ДАННЫХ, ПОЛУЧАЕМЫХ ОТ ЦИФРОВЫХ АНТЕННЫХ РЕШЕТОК

The problem of limiting the capacity of the diagram-forming circuit of the digital antenna array is considered, due to the capabilities of existing communication lines with serial data transmission from the receiving channels to the computer. This problem limits the possibilities of implementing various methods of signal processing in digital antenna arrays. The subject of the study is the possibility of increasing the capacity of the diagram-forming circuit of the digital antenna array due to software compression of radar data. The purpose of the work is to create a scientific and methodological apparatus that will increase the capcity of the diagram-forming scheme by using the principle of subjective redundancy in relation to radar data processing tasks. The results of the work include: justification and formulation of the principle of subjective redundancy of radar data and the method of compression of radar data, as well as the results of numerical studies confirming the operability of the proposed scientific and methodological apparatus. The principle of subjective redundancy is based on the independence of the separation of signal processing processes in the spatial and temporal domains when receiving a single echo signal, and in the case of receiving several echo signals, on the principle of superposition of fields from various sources in the far antenna zone. The method of radar data compression is based on the principle of subjective redundancy of radar data and differs from the known iterative procedure for approximating the matrix of complex samples in the form of a superposition of products of one-dimensional cosine spectra. It is shown that the application of the radar data compression method makes it possible to increase the transmission capacity of the digital antenna array transmission lines several times.

Synthetic reflection self-injection-locked microcombs

Laser-driven microresonators have enabled chip-integrated light sources with unique properties, including the self-organized formation of ultrashort soliton pulses and frequency combs (microcombs). While poised to impact major photonic applications such as spectroscopy, sensing and optical data processing, microcombs still necessitate complex scientific equipment to achieve and maintain suitable single-pulse operation. Here to address this challenge, we demonstrate microresonators with programmable synthetic reflection providing tailored injection feedback to the driving laser. Synthetic reflection achieves independence from random sample scattering properties and, when designed appropriately, enables deterministic access to self-injection-locked microcombs operating exclusively in the single-soliton regime. These results provide a route to easily operable microcombs at scale for portable sensors, autonomous navigation or extreme-bandwidth data processing. The novel concept of synthetic reflection may also be generalized to other integrated photonic systems.

METHODS OF SCIENTIFIC RESEARCH IN JURISPRUDENCE

The article reveals the content of the category "methodology", the general philosophical and methodological principles of cognition, which are usually defined by the term "philosophical foundations of science"; tasks in the development of general scientific, conceptual problems, conceptual and categorical apparatus, which are concretized by the relevant legal sciences.The article is dedicated to the study of cognitive methods, research in law, incl. In the civil law. It examines the principles of humanities methodology, the system of scientific knowledge methods, its structure, the elements of which are: (1) general (philosophical) method; (2) general scientific methods; (3) interdisciplinary methods; (4) methods of individual legal disciplines, the essence of which is determined, first of all, by the subject of research, the degree of generality of the tasks to be solved. Among recent general cognitive methods, such methods as: synergistic, systemic-dialectical, system approach method, deterministic method are often mentioned.Levels of cognition are characterized, the main criteria for their differences (theoretical and empirical cognition) are: (1) the nature of the research subject; 2) type of research tools used; (3) features of the method, as well as the interaction of the acquired knowledge and its conceptual interpretation, explaining the genesis and interaction of the acquired knowledge, its conceptual interpretation.The aim of the study is to analyze the opinions expressed about the concepts, nature, structure and meaning of cognitive (research) methods: law, the nature of general law and the features of sectoral methods in creating the structure of law in general, their systematization, as well as the nature and structure of the method of legal regulation of civil rights.The object of research is the concept, essence, structure, role and meaning of cognitive (research) methods.The tasks of the research are determined by its purpose, and they consist of the identification of the theoretical approaches of law, their nature, structure, and legal knowledge (research) methods.The article highlights the main aspects characteristic of any cognitive method: (1) objective-content; (2) operative; (3) praxeological aspect.Attention is drawn to the fact that nowadays, in addition to the materialistic dialectic, the idealistic dialectic can certainly be used in scientific research.

Determination of the optimal interval of the average load of the scientific equipment of the center for collective use

Modern Centers for the collective use of scientific equipment represent the basis for the formation of unique scientific competencies and competitive advantages in the market of research services. As highly specialized tools of scientific and innovative infrastructure, whose activities are aimed at implementing priority areas of scientific and technological development of the country, Centers funded, including from the state budget, face the need for a reliable assessment of the effectiveness of public funds investments, which leads to the formation of an objective need to improve the organization of work in this direction. The state regulator legislatively establishes requirements for monitoring the effectiveness of the use of expensive scientific equipment and a unique instrument base, however, the regulatory approach does not take into account the specifics of the functioning of the CCP regarding specialization, diversity of the instrument base, etc. This article discusses the problems of applying a standardized approach to evaluating the effectiveness of the centers for the collective use of scientific equipment and unique scientific installations. The general nature of the indicators included in the requirements for centers for the collective use of scientific equipment and unique scientific installations that have been created and (or) the functioning of which is provided with the involvement of budgetary funds does not reflect the differences between centers for collective use in terms of functioning, equipment composition, types of research and other essential characteristics. Attention is focused on one of the leading indicators, namely, the degree of loading. The authors believe that the averaging of requirements can lead to data distortion and neutralize the results of state monitoring, and suggest approaches to developing criteria for evaluating the optimal interval of the average load of scientific equipment of the center for collective use and justification of the appropriate time of such, depending on the type and purpose of use. The study was conducted on the example of the Center for Collective Use of St. Petersburg State University — St. Petersburg State University Science Park.

Formation of economic security of the state through the introduction of technological innovations

Introduction. The introduction of high-tech innovations plays a key role in shaping the economic security of the state. This is due to the fact that the high-tech sector has a great potential to ensure economic growth, create new jobs and improve the lives of citizens. This helps to strengthen the country's competitiveness and ensure its economic security. However, for the successful implementation of high-tech innovations, the state must create favourable conditions for the development of research infrastructure, promote cooperation between scientific institutions, business and government agencies, and ensure an adequate level of funding for research and development of innovative projects. Objective. The purpose of the study is to investigate the phenomenon of high-tech innovations, their impact on the economic security of the state and to determine the role of public administration in stimulating their implementation. Method (methodology) – to achieve the purpose and objectives, the study used the methods of theoretical generalization, analysis and synthesis, induction and deduction, and comparison. Based on the analysis and systematization of scientific sources that take into account the issue in detail, the scientific apparatus was developed and expanded. Results. The results of the study showed that high-tech innovations play a significant role in the development of the state's economy and ensuring its economic security. When defining the essence of the category "high-tech innovations", it was found that many authors do not distinguish between the concepts of technological innovations and high-tech innovations. There is no clear definition of this term in the current regulatory acts. The author suggests that high-tech innovations should be understood as innovations that fall under the criteria of Industries 4.0 and 5.0. It is established that today Ukraine is on the periphery of high-tech development. Most domestic enterprises have limited financial resources, so they are unable to carry out long-term research and development. Technological lagging behind developed countries leads to ineffective participation of our country in the international division of labour, since most high-tech products are imported to our country. The article suggests ways for public administration bodies to intensify the production of high-tech innovations by domestic enterprises.

On the Issue of Automation of Processes during Scientific Research

This article describes the elements of automation of processes during scientific research, describes experimental and laboratory equipment for obtaining experimental data on various experimental plans with elements of automation of the process of data collection and processing, as well as describes programs for electronic computers aimed at processing data obtained after experiments, both single-factor and multi-factor (according to the Boxing-Benkin plan). The use of these software packages accelerates the process of processing experimental data, evaluating the uniformity of variance according to the Cochran criterion, checking the significance of coefficients using the Student’s criterion, determining the coefficients of the regression equation, constructing the regression equation and allows to determine the adequacy or inadequacy of the resulting model based on the calculation results.

Topical issues of countering modern autonomous unmanned aerial vehicles and FPV drones

The high level of development of unmanned aviation has predetermined the possibility of its use to solve a wide range of tasks. At the same time, it should be noted that achievements in this area are not always used for peaceful purposes. The results of the analysis of the practice of using unmanned aerial vehicles (UAVs) in modern military conflicts and information about terrorist acts with their use allow us to conclude that the most difficult targets resistant to various methods of influence are modern autonomous UAVs and FPV drones with explosive devices. Therefore, the search for effective ways to counteract them seems to be an urgent area of research. The aim of the work is to develop the means for effective counteraction to modern autonomous UAVs and FPV drones by electromagnetic, laser and mechanical ways. The methods of system analysis are used in the work. The article notes the increasing level of threats associated with the mass use of autonomous UAVs and FPV drones, presents the results of the "revision" and critical analysis of the main methods of countering modern UAVs, reflecting their characteristics, advantages and disadvantages. Based on the results obtained, a comparative analysis of methods of countering autonomous UAVs and FPV drones was carried out. It is concluded that the most effective of them are the methods of electromagnetic, laser and mechanical action. The required parameters for the effective application of these types of impacts on modern autonomous UAVs and FPV drones are presented. The results of the research can be used as initial data for the creation of new and improvement of existing means of countering UAVs as part of physical protection systems (SFZ). The scientific novelty of the work consists in the development of a scientific and methodological apparatus for substantiating the SFZ of objects in terms of taking into account the functioning features and vulnerabilities of modern autonomous UAVs and FPV drones, as well as determining ways to improve systems to counter them based on the use of electromagnetic, laser and mechanical means.

METHOD OF DETECTION OF INFORMATION LEAKAGE BY REJECTING TRAFFIC FROM THE INFORMATION COMMUNICATION NETWORK

In the work, an analysis of the methods of detecting the leakage of language information was carried out. The analysis showed the absence of a single scientific methodical apparatus or automated software complexes to ensure the operational implementation of traffic analysis. Therefore, the work is devoted to information leakage detection based on the deviation of traffic from the information communication network. An improved method of providing operational traffic analysis and informing about a suspicious situation is proposed. A situation that requires further detailed traffic analysis by automated software complexes or relevant specialists. The developed method allows informing, in real-time, the responsible specialists about a possible leak of information, which is based on the analysis of the deviation of the nature of the traffic from the elements of the information speech network. Deviations, the nature of the traffic from the elements of the network parameters are measured relative to the usual traffic of the telephone or voice network relative to these parameters. A comparative analysis of normal traffic with real-time traffic is carried out. This method further improves the methodology. The improvement was carried out due to practical recommendations regarding constant coefficients, and calculations. These coefficients for the improved method were chosen by calculation and empirically, which allows for a significantly reduced response of the traffic estimation system. This system uses the developed methodology to detect possible leakage of language information.

Церковь и «красный террор» на Дону в 1918–1919 гг. в новейшей археографии

The article is a review of a documents collection prepared by well-known historians Yulia Alexandrovna Biryukova and Evgeny Anatolyevich Ageev “The Church on the Don during the Civil War of 1918–19. Investigation of the Special Commission.” The book was published in Volgograd in 2022. It contains an introductory source studies article on the documents of the Special Investigation Commission for Investigation of the Bolsheviks’ Atrocities, created on General A.I. Denikin’s order. The collection is based on documents “from the field”: questionnaires about Bolshevik persecution filled in by parishes of the Great Don Host in 1919. The collection contains photographs illustrating the Red Terror against the Russian Orthodox Church on the Don. It contains all necessary scientific reference apparatus to facilitate the search for information. The review emphasizes relevance and scientific significance of the documentary materials introduced into scientific use by the compilers. Regional and microhistorical approaches are scientific basis for the documents collection; the Don materials are grouped by districts, deaneries, and parishes. These approaches, respectively, have formed the basis of this article, which is devoted to the analysis of the collection. The principles of consistency and determinism permit to assess the publication, which is considered as a phenomenon of science with its own structure, while a part of the historical knowledge. The main scientific method used in this publication is problematic. The article offers considerations on the problem of Red Terror towards the Russian Orthodox Church. Attention is focused on the fact that a significant part of the published documents testify to local initiatives in the acts of Red Terror. They did not originate from the authorities, were not ordered, but manifested newcomer soldiers’ aggression towards the Church. The author comes to the conclusion that the published sources may be useful to researchers of the Russian Orthodox Church and the Civil War in Russia. Analysis of the attitude of the local Bolshevik authorities, the military, and the population towards church institutions may contribute to a better understanding of the nature of the Russian Orthodox Church persecution and, more broadly, of the role of the religious factor in the Civil War in Russia.

ОБҐРУНТУВАННЯ МЕТОДИКИ ПРОВЕДЕННЯ РЕКОНСТРУКЦІЇ БУДІВЕЛЬ ТА СПО-РУД (ІНШИХ ЗАВЕРШАЛЬНИХ БУДІВЕЛЬНИХ РОБІТ) У ВІЙСЬКОВІЙ ЧАСТИНІ НГУ

The increase in the number of personnel, weapons, military equipment, material and technical equipment stocks causes the need for quartering and placement of military personnel, the use of additional buildings and structures for housing, storage of combat and special equipment, material and technical equipment stocks, conducting combat and special training, implementation tasks of everyday activities, as well as for economic and other needs. The solution to this problem lies in the reconstruction of buildings and structures in the military unit. Taking into account the specifics of financial support, management and subordination of the military units of the NSU, the mechanism defined for civil legal organizations and individuals regarding the implementation of measures for the preparation of project and estimate documentation, the start of the construction process and its progress, the author's supervision and control of the progress of the reconstruction of buildings and buildings (other final construction works) in the military part of NSU has a number of differences. In the conditions of martial law, it is positive that the repair and construction works performed in the area of reconstruction of buildings and structures (other final construction works) in the military unit are carried out with the preservation of the elements of the load-bearing and enclosing structures, and under the condition of their autonomy, there is no need for the duration of the works suspension of the operation of the facility subject to reconstruction, which allows the barracks and housing fund, other buildings and structures of the military unit to be used for their purpose in the future. With the help of the proposed methodological recommendations, the head of the rear quarters and operational service will have the scientific and methodological apparatus necessary for the reconstruction of buildings and structures (other final construction works) to solve the issues of quartering personnel, placing weapons and military equipment, and storing supplies of material and technical means in the military unit.

МЕХАНИЗМЫ УПРАВЛЕНИЯ РЕСУРСАМИ ДЛЯ НАУЧНЫХ ИССЛЕДОВАНИЙ ПО КРИТЕРИЯМ ЭКОНОМИЧЕСКОЙ ЭФФЕКТИВНОСТИ

The purpose of the study is to develop mechanisms for managing the labor, financial and logistical resources available to the university for carrying out scientific activities, providing infor-mation about the human resources potential of scientific research and selecting employees to form the most effective scientific team for the implementation of each scientific project. Research methods include the method of critical analysis of scientific publications, content analysis, comparison, and systematiza-tion. Mechanisms have been developed to determine the amount of funding for scientific projects, taking into account indicators of macroeconomic performance and an indicator related to the use of the results of work obtained within the framework of previous research conducted by the project manager and re-search team. The criteria for the creation of Centers for the collective use of scientific equipment and the transfer of high-tech expensive equipment to them and their acquisition by qualified personnel to meet the needs of various projects, in order to optimize the cost of purchasing material and technical resources for scientific projects, in particular, equipment, are substantiated.

Опыт хирургического лечения сложного оскольчатого перелома шейки плечевой кости

Abstract. Fractures of the humerus at the proximal part are a common issue in traumatology and orthopedics. The increasing number of injuries, the need for early surgery and rehabilitation require wider implementation of patient-oriented tactics for fractures of the proximal humerus to restore limb function. Surgical treatment of these fractures is a priority, since it creates conditions for the full restoration of the anatomical structures of the segment and the function of the joint. Treatment is aimed at minimally traumatic reduction of proximal humerus fractures, ensuring early function and reducing rehabilitation time. The research purpose is to demonstrate the successful treatment of a comminuted fracture of the surgical neck of the humerus using the osteosynthesis method with a titanium plate with angular stability and screws, supplemented with a cerclage-wire loop, with subsequent restoration of the functionality of the damaged limb. Materials and methods. We use data from the medical documentation of the trauma hospital, data from instrumental research and the results of dynamic observation. A search and analysis of scientific publications was carried out in databases and web resources PubMed, EMBASE, Web of Science, Cochrane Library, MEDLINE, Google Scholar, Cyberleninka and the electronic library eLIBRARY. The results were obtained using the equipment of the Center for Collective Use of Scientific Equipment of Derzhavin Tambov State University. Result. As a result of treatment, consolidation of the fracture was achieved and the function of the upper limb was restored. Conclusion. The use of osteosynthesis with a titanium plate with angular stability and screws, a cerclage-wire loop allows achieving positive treatment results.

Особенности современных методов диагностики остеопороза (обзор литературы)

Abstract. Currently, osteoporosis is one of the most common diseases that significantly reduce the quality of life of patients, leading to their disability and death from related complications. The growing prevalence of osteoporosis in the population over the years, both among people over 60 years of age and among children under 18 years of age, as well as the high prevalence of osteoporotic fractures and their projected increase, requires improvement in the organization of care for patients, which primarily implies timely diagnosis with determination of the risk of low-energy fractures and timely treatment. Purpose: based on an analysis of the literature, to evaluate the current state of the problem and the effectiveness of modern methods for diagnosing osteoporosis. Materials and methods: a search was conducted in the open electronic scientific databases PubMed and the databases of the Russian scientific electronic library eLibrary using keywords and phrases: osteoporosis, osteodensitometry, bone mineral density, osteoporotic fracture. The results were obtained using the equipment of the Center for Collective Use of Scientific Equipment at Derzhavin Tambov State University. Results. The research presents data on risk factors for osteoporosis, possible clinical manifestations and existing methods for diagnosing this disease, indicating the advantages and disadvantages of each of the presented methods. The standard research method, if there is reason to assume a diagnosis, will be osteodensitometry. Ultrasound osteodensitometry serves as an indirect method for assessing bone tissue density. To determine bone mineral density it is recommended to use single energy X-ray absorptiometry (SXA), dual energy X-ray absorptiometry (DXA), radiographic absorptiometry (RA) and quantitative computed tomography. The standard radiographic method of radiation visualization of bone structures is the most accessible and widespread in the Russian Federation; however, for the purpose of diagnosing osteoporosis, this technique in most cases is not the method of choice, since radiographs can reveal reliable, but rather late signs of this disease. Conclusion. Each of the diagnostic methods has its own individual advantages, unique to it; to identify this disease in the early stages of its development, there is a need to use several methods for quantitative determination of bone density simultaneously.

ОСОБЕННОСТИ ПРЕПОДАВАНИЯ ДИСЦИПЛИНЫ “НАНОТЕХНОЛОГИИ В ЕСТЕСТВЕННОНАУЧНЫХ ИССЛЕДОВАНИЯХ” В СЕВЕРО-КАЗАХСТАНСКОМ УНИВЕРСИТЕТЕ ИМЕНИМ.КОЗЫБАЕВА

Nanotechnology has captured the information field on an impressive scale, which is in one way or another related to scientific topics. In the modern world, the term "nanotechnology" is heard by almost every layman, for marketing purposes there are abuses with reference to this area. A definition is given that restricts the scope of this term. At the same time, breakthrough opportunities with the use of this interdisciplinary field for science, the latest outstanding research both for the promotion of digitalization and for the knowledge of man himself are shown. Since 2022, North Kazakhstan University has beenconducting classes in the discipline "Nanotechnology in Natural Science Research" using high-precision modern equipment. The goal is to reveal the features of teaching this discipline at the Department of Physics. The importance of training specialists ofvarious educational programs of the natural sciences in this discipline, the need to apply practical research skills on advanced scientific equipment: atomic force microscope, scanning tunneling microscope are considered. The results of scanning by students obtained in laboratory classes are given. The aspects of teaching this discipline at the North Kazakhstan University at the Department of Physics are revealed, the importance of the knowledge and skills gained in the formation of a future competitive specialist in the labor market is shown.

The effect of quality of work life on creative behavior of professors at the Kasdi Merbah Ouargla university’s Faculty of Applied Sciences

Over the last decade, much research has been conducted in the field of quality of work life(QWL) and its associations with the creative behavior of employees. Prior studies have found substantial positive evidence for statistical associations between QWL and creative behavior. The purpose of this study is to investigate the relationships between QWL dimensions and creative behavior. This study examines the relationships between QWL dimensions and creative behavior. The researcher adopted the descriptive survey design. Primary data was sourced through the instrument of the questionnaire. It was given to a chosen group of (110) workers. A percentage of (90%) was obtained from retrieving (62) valid questionnaires. The research study is drawn scientifically using the simple random sampling technique. The findings revealed the institution under study professors’ creative behavior correlates with the quality of work life in all dimensions (work characteristics, work environment, participation, compensation, supervision, and working group). The institution under study professors’ creative behavior is impacted by a combination of work-life quality dimensions. It also discovered an average quality of work life and creative behavior of the institution in question. The researcher recommended, among others that the (institution under study) should pay more attention to the quality of work life by paying attention to the work environment by providing a healthy, safe work environment (security equipment and protection from occupational hazards in the workplace), and comfortable at work from Where (cleanliness, lighting, humidity, ventilation, housing as well as office and logistical equipment, laboratories, and technical and scientific equipment required to finish and stimulate research work. The Faculty of Applied Sciences of the University of Kasdi Merbah Ouargla advises that training sessions and awareness campaigns be held to raise awareness of the system of salaries, wages, rewards, and employees’ obligations to their jobs.

Научно-методологические координаты осмысления феномена толерантности и этноконфессиональной идентичности.

This article examines issues related to the development of scientific and methodological foundations for the study of the phenomenon of tolerance and ethno-confessional identity. Such a research course is determined by the need to update these foundations in order to meet the modern configurations of the phenomenon of tolerance and ethno-confessional identity. The author systematizes the existing scientific and methodological apparatus, critically evaluates it and offers a rather original symbiosis of scientific and methodological approaches and epistemological technologies. The author carries out an analytical assessment of the current state of tolerance as the most important principle of the communication space, speaks about the importance of implementing this principle. The author understands that it is in these communication axiological coordinates that the formation of civil society, the rule of law and civilizational space is possible. In his analysis, the author explores the most interesting and fruitful, from his point of view, scientific and methodological findings. The analysis proposed by the author allows, in his opinion, from a slightly different perspective to implement the Concept of “Zhana Kazakhstan”, in the value priorities of which tolerance is precisely designated as the basis of Kazakh society. In the same context, the author explores the phenomenon of ethno-confessional identity. The question “Who am I?” is decisive in a person's self-realization, in his self- determination. It is from these positions that the author explores this phenomenon.

FEATURES OF THE FORMATION, INTAKE AND DISTRIBUTION OF THE IRON-CONTAINING COMPONENT IN THE WATER SUSPENSION OF THE DNIEPER RIVER WITHIN ZAPORIZHZHIA CITY

The article presents the results of research devoted to one of the aspects of environmental issues, namely: the determination of the distribution features of the solid component of the river suspension containing iron oxide; investigation of the morphological characteristics of iron-containing particles; and the discovering of their genetic affiliation to various technological processes of metallurgical production. The results of many years of continuous comprehensive research on the distribution of iron in the suspended matter of the Dnieper water within Zaporizhzhia city are presented. Field observations were carried out by scientists of the Institute of Geological Sciences of the National Academy of Sciences of Ukraine (IGS) in cooperation with specialists from the State Institution “Scientific Hydrophysical Center of the National Academy of Sciences of Ukraine” (SHC). Analytical studies of the solid phase of the suspended matter were done in the Center for Collective Use of Scientific Equipment of the National Academy of Sciences of Ukraine and the Educational and Scientific Institute “Institute of Geology” of Taras Shevchenko Kyiv National University. The publication considers the seasonal features of the distribution of the total iron content in suspension and the relationship of its monthly changes with the distribution of concentrations of such heavy metals as copper, chromium, nickel, zinc. Considerable attention is paid to the examination of iron-containing particles present in suspension, their chemical and trace element composition and the allocation of their individual categories in accordance with the technogenic processes during which they were formed. Comprehensive analysis of suspension samples made it possible to identify and classify a group of typical iron-bearing formations that are inherent in the territory of Zaporizhzhia city. Based on a set of characteristics, three main genetic categories have been identified: spherical mineral aggregates represented by iron oxide; clastic fragments of Fe2O3, and aluminosilicate spherules (formation, the main or essential component of which is aluminum oxide with an admixture of iron). The obtained data showed a significant influence of the metallurgical industry on the chemical composition of the Dnieper suspension within Zaporizhzhia. Comparison of iron-containing particles observed in the Dnieper suspended matter with the substance filtered out by gas purification systems of various parts of metallurgical production and slag deposits showed that the most active emission to the environment occurs during the preparation and smelting of iron ore.

Implementation of survivability aware protocols in WSN for IoT applications using Contiki-OS and hardware testbed evaluation

The Internet of Things is a network of devices capable of operating and communicating individually and working for a specific goal collectively. Technologically, many networking and computing mechanisms have to work together with a common objective for the IoT applications to function, and many sensing and actuating devices have to get connected to the Internet backbone. The networks of resource-constrained sensor devices constitute an integral part of IoT application networks. Network survivability is a critical aspect to consider in the case of a network of low-power, resource-constrained devices. Algorithms at different layers of the protocol stack have to work collectively to enhance the survivability of the application network. In this article, the survivability-aware protocols for wireless sensor networks for IoT applications are implemented in real network scenarios. The routing strategy, Survivable Path Routing protocol, and the channel allocation technique, Survivability Aware Channel Allocation, are implemented in Contiki-OS, the open-source operating system for IoT. Furthermore, the implementation scenarios are tested with the FIT IoT Lab hardware testbed. Simulated results are compared with the results obtained from the testbed evaluation.

Research on Construction Safety Management Measures for Building Site

With the rapid development of Chinese construction industry, the scale of construction engineering is more and more large, and the degree of specialization is constantly improving. In order to gain competitive advantage in the market, construction enterprises must pay attention to construction safety management and optimization of construction technology. In addition, in order to promote the long-term and stable development of the project, the project contractor must also pay attention to the quality, efficiency and safety of the construction environment to ensure the safety of workers' lives and property. Therefore, construction safety management has become an important part of construction. It is an important strategy to conduct a comprehensive analysis of construction safety hazards, strengthen the construction of safety management system, improve workers' safety awareness and skill level, and adopt scientific construction technology and equipment.