bluuebunny/crossref_metadata_2025 huggingface dataset:
Transdisciplinary tools in modern urban planning theory (by the example of the concept of "urban vegetation")
Authors: Zheblienok Natalia N. , Vasilyeva Kseniya A.
Published: January 2023

The changes in theoretical urban planning concepts under the influence of transdisciplinarity are investigated. On the example of the definition of "urban vegetation", the variability of the use of linguistic and content structures for its description is discussed. A brief review of texts illustrating the transition from the concept of "resource assessment" (which is centered on the analysis of the consumer value of individual natural components of the urban environment) to the concept of "anthropo-eco-system" (focused on a qualitative assessment of the current state of individual components of the system) is presented. The theme of natural components inherent in the past decades is giving way to a modern view of system components of various origins. The question is raised about the need to rethink a number of theoretical foundations of urban planning in order to deepen their internal links with the socio-economic and cultural agenda.
Issues of diagnostics and treatment of vitamin D deficiency in older patients
Authors: Nikitin Igor G. , Brutskaya Ludmila A. , Gultiaeva Nadezhda A. , Podkhvatilina Anastasiya S.
Published: January 2023

Vitamin D is a fat-soluble compound that a person obtains from food or synthesizes independently when the skin is exposed to sunlight.
Vitamin D metabolism is modulated by various intrinsic and extrinsic factors, including genetic polymorphism, skin type (pigmentation), age, health, season, latitude, clothing, and diet. Some of them are modifiable, i.e., they can be controlled by humans.
To assess the vitamin D level in the body, the recommendation was to determine the concentration of total 25(OH)D in the blood serum, the main circulating form, which reflects both the intake of vitamin D from food and native preparations and the synthesized vitamin D in the skin under the influence of ultraviolet irradiation. This study focused on the diagnosis and treatment of vitamin D deficiency in older patients.
The age-related problem is associated with a more frequent history of surgery and chronic diseases requiring drug therapy, which in turn can affect the metabolism of this vitamin. Vitamin D deficiency in older people requires constant and long-term use of cholecalciferol; however, the risks of drug interactions and polypharmacy should not be overlooked.
The diagnosis and treatment of vitamin D deficiency in older people should consider all the characteristics of this group. Moreover, this study presents the features of vitamin D metabolism in older people, nosologies predisposing to the development of vitamin D deficiency, methods for diagnosing and correcting vitamin D deficiency, and relationship between severe COVID-19 and vitamin D levels.
Further study of possible drug interactions, additional effects of vitamin D, and its contribution to comorbidities is warranted.
Relationship of bioelemental status and changes in the functional state of the lungs in EMERCOM firefighters of Russia
Authors: Vlasenko Marija A. , Sannikov Maksim V. , Yakovleva Marija V. , Aleksanin Sergej S.
Published: January 2023

BACKGROUND: Firefighters are characterized by constant interaction with smoke and various combustion products, which, entering the body can, affect the state of the respiratory system.
AIM: To study the relationship of the bioelemental status with alterations in the functional state of the lungs in firefighters of the Ministry of Emergency Situations of Russia.
METHODS: The work analyzed the data of 97 people from the territorial fire departments of the city of Saint Petersburg, directly involved in firefighting. The firefighters underwent a comprehensive medical examination, including an assessment of the bioelemental status in hair samples by inductively coupled plasma mass spectrometry.
RESULTS: As a result of the study, an increase in the content of toxic trace elements in firefighters was revealed in comparison with persons who did not participate in extinguishing the fire. Against the background of an increase in toxic trace elements, there was a decrease in vital ones. The relationship between the concentration of toxic trace elements and the state of the bronchopulmonary system in firefighters was revealed. The interrelation of the concentration of aluminum, silver and cadmium with a decrease in the diffusion capacity of the lungs, broncho obstructive changes and pulmonary fibrosis is shown. A significant increase in the content of silver was found in firefighters with broncho-obstructive changes compared to those with normal bronchial conduction.
CONCLUSION: The study illustrated the relationship between the levels of silver, aluminum, and cadmium and development of functional changes in the lungs..
Targeting Hypocretin Receptor 1 to Normalize Nucleus Accumbens Dopamine Transmission and Block Incubation of Cocaine Seeking
Authors:   , Clark Philip J , España Rodrigo A , Dougherty Kimberly J.
Published: January 2023

Cocaine use disorder is a devastating condition for which there are no approved pharmacotherapies. A robust body of work indicates that Nucleus Accumbens (NAc) dopamine (DA) transmission is highly dysregulated following chronic cocaine use. Unfortunately, therapeutics that directly modulate DA transmission tend to carry intolerable side-effects and have a high abuse liability, invalidating their use in clinical populations. However, a growing body of evidence indicates that Hypocretin/Orexin system (HCRT) may be a promising target for therapeutics. Work from our lab indicates that treatment with a HCRT Receptor 1 (HCRTr1) antagonist can lower cocaine intake and reduce cocaine's effect on DA transmission. Although it remains unclear whether HCRTr1 can also reduce the risk of relapse during abstinence from cocaine. In the present studies, we implement a model of relapse to cocaine seeking in which animals self-administer cocaine on the Intermittent Access schedule for one week, followed by one week of forced abstinence (IntA + Abstinence). Using this model, cue-induced seeking tests on abstinence day 1 (AD1) and abstinence day 8 (AD8) revealed an increase, or incubation, of cue-induced drug seeking that is consistent with high drug craving. Furthermore, these animals exhibited dysregulated NAc DA transmission and increased phosphorylation of the dopamine transporter (DAT). We then tested whether the HCRTr1 antagonist, RTIOX-276, could block the incubation of cocaine seeking and prevent aberrant effects on NAc DA transmission. We found that a single dose of RTIOX-276 delivered on the first day of abstinence blocked incubation of cocaine seeking, suggesting it lowered cocaine cravings. Furthermore, animals that were treated with RTIOX-276 did not exhibit abnormal NAc DA transmission or DAT biochemistry. We therefore posit that HCRTr1 may serve as a valuable therapeutic target to reduce relapse rates and normalize NAc DA transmission in those suffering from cocaine use disorder.
Identification of the BORG2/Cdc42EP3 Actin Binding Element
Authors:   , Mehetre Prajakta Dilipkumar , Padrick Shae B
Published: January 2023

The Binder of Rho GTPase protein family (BORG), also known as Cdc42 Effector Proteins, consists of five members (BORG1-5). Each member of this family is defined by a Cdc42/Rac Interactive Binding motif (CRIB) and BORG Homology domains, BH1, BH2, and BH3. BORG proteins are known to be the first regulators of the septin cytoskeleton in non-dividing mammal cells. Recent studies in CancerAssociated Fibroblasts (CAFs) have shown that BORG2 works with the septin cytoskeleton to stabilize actin filaments in stress fibers. Although, it is established that the BH3 domain of BORG proteins interacts with septin complexes, the region responsible for actin interaction is not clearly established. Here, we have designed an N-terminal and C-terminal series of BORG2 truncations based on conserved regions in the sequence. By employing Tetramethylrhodamine (TMR) maleimide labeling at a unique cysteine, we have developed a fluorescence anisotropy assay for actin binding. Using this assay, we have established the region necessary and sufficient for actin binding. Notably, this region differs from a previously proposed actin binding site and exists in other BORG proteins, suggesting that the actin interaction may be a widespread and previously unrecognized feature of the BORG protein family.
Three-dimensional bioprinting of functional β-islet-like constructs
Authors: Parvaneh Shahram , Kemény Lajos , Ghaffarinia Ameneh , Yarani Reza , Veréb Zoltán
Published: January 2023

Diabetes is an autoimmune disease that ensues when the pancreas does not deliver adequate insulin or when the body cannot react to the existing insulin. Type 1 diabetes is an autoimmune disease defined by continuous high blood sugar levels and insulin deficiency due to β-cell destruction in the islets of Langerhans (pancreatic islets). Long-term complications, such as vascular degeneration, blindness, and renal failure, result from periodic glucose-level fluctuations following exogenous insulin therapy. Nevertheless, the shortage of organ donors and the lifelong dependency on immunosuppressive drugs limit the transplantation of the entire pancreas or pancreas islet, which is the therapy for this disease. Although encapsulating pancreatic islets using multiple hydrogels creates a semi-privileged environment to prevent immune rejection, hypoxia that occurs in the core of the capsules is the main hindrance that should be solved. Bioprinting technology is an innovative process in advanced tissue engineering that allows the arranging of a wide array of cell types, biomaterials, and bioactive factors as a bioink to simulate the native tissue environment for fabricating clinically applicable bioartificial pancreatic islet tissue. Multipotent stem cells have the potential to be a possible solution for donor scarcity and can be a reliable source for generating autograft and allograft functional β-cells or even pancreatic islet-like tissue. The use of supporting cells, such as endothelial cells, regulatory T cells, and mesenchymal stem cells, in the bioprinting of pancreatic islet-like construct could enhance vasculogenesis and regulate immune activity. Moreover, scaffolds bioprinted using biomaterials that can release oxygen postprinting or enhance angiogenesis could increase the function of β-cells and the survival of pancreatic islets, which could represent a promising avenue.
Methodology for characterizing the printability of hydrogels
Authors: Rodríguez-Rego Jesús M. , Mendoza-Cerezo Laura , Macías-García Antonio , Carrasco-Amador Juan P. , Marcos-Romero Alfonso C.
Published: January 2023

Currently, the characterization techniques for hydrogels used in bioprinting are extensive, and they could provide data on the physical, chemical, and mechanical properties of hydrogels. While characterizing the hydrogels, the analysis of their printing properties is of great importance in the determination of their potential for bioprinting. The study of printing properties provides data on their capacity to reproduce biomimetic structures and maintain their integrity after the process, as it also relates them to the possible cell viability after the generation of the structures. Current hydrogel characterization techniques require expensive measuring instrument that is not readily available in many research groups. Therefore, it would be interesting to propose a methodology to characterize and compare the printability of different hydrogels in a fast, simple, reliable, and inexpensive way. The aim of this work is to propose a methodology for extrusion-based bioprinters that allows determining the printability of hydrogels that are going to be loaded with cells, by analyzing cell viability with the sessile drop method, molecular cohesion with the filament collapse test, adequate gelation with the quantitative evaluation of the gelation state, and printing precision with the printing grid test. The data obtained after performing this work allow the comparison of different hydrogels or different concentrations of the same hydrogel to determine which one has the most favorable properties to carry out bioprinting studies.
Alzheimer\'s disease and traditional medicinal plants: A review
Authors: Dash Debabrata , Koiri Raj Kumar
Published: January 2023

Alzheimer's disease (AD) is characterized by severe memory loss that affects one's ability to operate in social and professional contexts. More than 20 million individuals worldwide are affected by it, making it the most prevalent type of dementia. An elusive memory loss, corresponding functional deterioration, and behavioral abnormalities are hallmarks of AD. AD is the most common cause of disability in the elderly and patients may survive for more than ten years after receiving their diagnosis. From its lowest level at ages 65 to 70 to rates that may approach 6 percent for those over the age of 85, the incidence of AD ranges from 1 to 4 percent of the population per year. Over a hundred novel products are currently undergoing clinical trials thanks to ayurvedic medicinal plants, which have shown to be the most fruitful source of leads or medication development. Indeed, the use of several Ayurvedic medicinal plants and their ingredients for treating Alzheimer's disease has been detailed in a number of scientific research. Phytochemical analyses of the various plant parts have revealed the presence of numerous valuable compounds, including lignans, flavonoids, tannins, polyphenols, triterpenes, sterols, and alkaloids, that exhibit a wide range of pharmacological activities, including anti-inflammatory, anti-amyloidogenic, anticholinesterase, hypolipidemic, and antioxidant effects. However, the precise mechanism of their action is still unclear. This study compiles studies on several medicinal plants that have demonstrated potential for correcting the pathology of Alzheimer's disease. The report provides sufficient baseline data that could be used in drug discovery campaigns and development processes, thereby providing new functional leads for Alzheimer's disease. It does this by summarizing information regarding the phytochemistry, biological, and cellular activities, as well as the clinical applications, of these various plants.
Amyloid myopathy: A rare cause of quadreparesis with bulbar palsy
Authors: Shah Gaurav , Chaudhary Jay , Joshi Pranav , Shah Shalin , Patel Mayank , Shah Sudhir
Published: January 2023

Amyloidosis is a systemic disease that results in the deposition of amyloid fibrils in a variety of tissues causing their progressive dysfunction. Systemic amyloidosis involves Kidney, Heart, Skin, Peripheral nerve and rarely muscle. Amyloid myopathy (AM) is a rare manifestation of primary systemic amyloidosis (AL). Amyloid myopathy frequently occurs in the setting of systemic amyloidosis and less commonly in isolation (isolated amyloid myopathy). It can present with proximal muscle weakness and an increased creatinine kinase level. Muscle involvement is associated with amyloid deposits around small blood vessels and muscle fibers. We present a case of rapidly progressive muscle weakness with dysphagia. The diagnosis was confirmed by demonstration of amyloid protein by Thioflavin immune-florescence staining on abdominal fat pad biopsy.
A Study of the Structural Behavior of Recycled-Concrete Haunched Beams with Web Opening
Authors: Mosa Fakhriya Obead , Abbas Abdulnasser M.
Published: January 2023

The structural behavior of Reinforced Concrete Haunched Beams (RCHBs) was investigated in this study. One prismatic control beam and fourteen Haunched Beams (HBs) were used in the experimental test and numerical analysis. The variables considered are Recycled Concrete Aggregate (RCA) ratio which is taken as 0, 30 %, and 60 %, opening shape (square and circular with the same area of 4560 mm2), and haunch angle (α) of 6.34° and 9.46°. The samples of dimensions (1750x200x300) mm were tested under a two-point load. The samples were simulated numerically using the Abaqus/CAE tool. The experimental outcomes show that using 30% RCA decreased the resistance by 8.24% - 26.45% compared with the control sample. While at 60% RCA, the resistance decreased by 16.35% - 34.71%. HBs with α=6.34° give a strength quite close to the control beam (PN) by 1.93%, while α=9.46° decreases the strength by 12.94% compared with PN. Compared with the solid beam, square holes in HBs provide a strength reduction range of 5.83% - 18.79% for α=6.34° and α=9.46°, respectively. The beams with circular apertures have a resistance decrease of about 3.43% - 14.70%, which corresponds to α=6.34° and α=9.46°. The numerical findings were 8.41% of the experimental data.
The Product Acceptance Preferences of Gayo Arabica Coffee Brewing with Additional Fruit and Spices Variants
Authors: Fadhil Rahmat , Muzaifa Murna , Juliadi Diky
Published: January 2023

There have been significant changes to coffee-drinking cultures worldwide regarding how and where to consume coffee. The increase in coffee enthusiasts, how to enjoy coffee is also growing, starting from the addition of milk, chocolate, and various kinds of mixtures that follow existing local trends and wisdom. The purpose of this study is to analyze the product acceptance preferences of Gayo arabica coffee brewing with additional fruit and spices variants using the Simple Additive Weighting (SAW) method. In this study, there were 5 products analyzed, namely a mixture of espresso with sap (nirapresso), a mixture of espresso with sweet orange (orangepresso), a mixture of espresso with lime (limaupresso), a mixture of espresso with lemongrass (serehpresso) and a mixture of espresso with nutmeg (palapresso). The espresso used in this study was 30 ml, with the addition of fruit and spice extracts of 30 ml, 45 ml, and 60 ml for each product. The results showed that the panellists had different preferences for each alternative type of brewing. The alternatives of each product were obtained that nirapresso had the highest acceptance preference for the addition of 45 ml of sap, orangepresso with the addition of 60 ml of sweet orange, lime with the addition of 60 ml of lime, lemongrass with the addition of 60 ml of lemongrass, and palapresso with the addition of 30 ml of nutmeg.
What Makes People Cry? A Preliminary Analysis of Situations That Evoke Emotional Tears
Authors: Wągrowska Julia , Wróbel Monika
Published: January 2023

The aim of two preliminary studies reported in the article was to identify the main reasons for crying and to create a set of situational vignettes that would refer to specific situations or events that potentially can make people cry. In Study 1 (n = 61), we asked the participants to list six general reasons behind crying. In Study 2 (n = 70), the participants were asked to identify specific situations in which people shed emotion-related tears. As a result, we selected a set of 34 situational vignettes. Each of them is a short and gender-neutral description of a specific emotional reason that can make people cry and is related to one of the following basic emotions: happiness, sadness, anger, or fear. The vignettes can be used to manipulate the emotional basis of tears in experimental research.
Polish Adaptation of the Occupational Hardiness Questionnaire (OHQ)
Authors: Grala Krzysztof , Baka Łukasz
Published: January 2023

Occupational hardiness is a pattern of attitudes and strategies that stimulates an individual to perceive stressful work situations as controllable, worth dealing with, and contributing to professional development. One of the popular tools in the world to measure this construct is the Occupational Hardiness Questionnaire (OHQ) developed by Moreno-Jiménez et al. It has a three-factor structure, proven construct validity, and good internal consistency. The overarching aim of the study was to prepare a Polish adaptation of the OHQ based on a sample of Polish employees working in health care, education and science, and customer service. The questionnaire-based research was conducted in two stages, with two independent samples. The first study was cross-sectional. Their results were used to estimate the factorial validity, construct validity, and internal consistency of the adapted tool. Participants in the first study were 1,212 employees (originally 1,315) of health care (n = 400), education and science (n = 410), and customer service (n = 400) sectors. The second study, which was longitudinal in nature, included two measurements and was used to estimate test–retest reliability. Of the 400 participants (employees of customer service), 205 completed the questionnaire in two measurements. The Polish version of the OHQ has a three-factor structure, confirmed construct validity and good internal consistency. The Polish version of the OHQ is ideal for scientific research, but can also be used in practice: in career counseling, recruitment, selection, or screening.
Does Dispositional Positive and Negative Affect Predict Late-Career Entrepreneurial Intention? A Theory of Planned Behavior Perspective
Authors: Lam Melanie , Purc Ewelina
Published: January 2023

Late-career entrepreneurship can be a good answer to the problems of an aging population—age discrimination experienced by mature workers or inadequate pensions. For this reason, it is gaining increasing interest among researchers and policymakers. However, to date, very little is known about the factors that favor or hinder intentions to become entrepreneur at the late-career stage, especially those taking a psychological perspective. The current study aims to fill this gap by testing whether dispositional affect is related to entrepreneurial intention at the late-career stage. To explain the mechanism of this relationship, we use the theory of planned behavior. We conducted a study that included 292 non-self-employed people aged 45–81. The results showed that neither positive affect nor negative affect are directly related to entrepreneurial intention, but these relationships are rather indirect and go through components of the theory of planned behavior. This provides insights into explanation of late-career entrepreneurial intention and can be used by researchers, policymakers and practitioners, for example in programs supporting business start-ups by people approaching retirement age.
Video Surveillance System of Target Contour
Authors: Vasylenko Mykola , Haida Maksym
Published: January 2023

The paper considers the problem of object detection and recognition, namely, its solution without the use of expensive, resource-intensive and complex data collection and processing systems, with the possibility of its mobility, ease of installation and initial setup. The available ways and methods of solving the problem, their advantages and disadvantages are given. The operation of the system according to an algorithm developed on the basis of the method of object recognition, namely the selection of contours by a filter based on the Canny operator, is presented. The article presents intermediate and final illustrations of the system algorithm at each step, which gives an opportunity to get acquainted with its advantages over classical video surveillance systems and some disadvantages. Elements such as a webcam with a video frame rate of 25 frames per second, a mobile phone and a personal computer with the MatLab2021 programming environment installed (chosen due to the ease of use and the presence of built-in image processing functions) were used to demonstrate the system's performance.
Synergy Effect Using Vertical-axial Wind Power Plants
Authors: Sineglazov Victor
Published: January 2023

The necessity of using a synergistic effect in energy systems that include vertical axial wind power plants is shown. The ways of achieving a synergistic effect at different levels of the system hierarchy are considered: at the lower level, this is the construction of wind farms, consisting of a group of vertical-axial rotors, located in a certain way in space, at the middle level, the inclusion of wind farms in a hybrid energy system, which may additionally include: solar power plant, wave energy plant, hydroelectric power plant, gas combustion plant, etc. at the upper level – synergies between energy efficiency and renewable energy sources. For the problem solution of synergy effect achievement it is proposed to use the Navier–Stokes differential equations solution for cluster of three wind-energy stations with further optimization based on Genetic algorithm.
Acoustic Emission at Properties Change of Composite Destructed by von Mises Criterion
Authors: Filonenko Sergii , Stakhova Anzhelika
Published: January 2023

The results of theoretical studies influence the parameter characterizing the composite properties on acoustic emission signals parameters during composite material fracture by a shear force using von Mises criterion are considered. It has been determined that with increase of influencing parameter, there is decrease the maximum amplitude and duration of generated acoustic emission signals. In this case, a decrease the maximum amplitude of acoustic emission signals is ahead of decrease in their duration. It has been determined that the regularities of acoustic emission signals maximum amplitude and duration decrease with an increase the parameter characterizing the composite material properties are well described by power functions.
Nanocircuits for Protection of the Cipher Information
Authors: Melnyk Oleksandr , Mykolushko Andriy , Myshynskyi Arsen
Published: January 2023

While using side-channel attacks, cipher devices was defenseless to power and electromagnetic analysis attacks. These attacks are due to the use of low cost equipment. Currently, most of the cipher circuits are implemented on complementary metal-oxide-semiconductor. The disadvantage is the relationship between the data processing the curcuit to energy consumption. When processing the CMOS transistor logic "1" and the logic "0", through the transistor passes a different volume of current. If don't implement significant counteractions, it will allow another person to decrypt the key of the cipher module. A new logical approach to quantum-dot cellular automata and single-electron transistors is explored. The proposed approach has low power consumption and complicated clocking circuits. In theory and practice of cipher protection one of the key problems is the formation of binary pseudorandom sequences of maximum length of acceptable statistical characteristics. Generators of pseudorandom sequences usually based on linear shift registers with linear feedback. Here expanded the concept of linear shift register, believing that his every category (memory cell) can be in one of the states. Call registers are "generalized linear shift registers".
Filtering Algorithms for Determining the Coordinates of the Object in Decision Support Systems
Authors: Bidyuk Petro , Manuilenko Roman , Pantyeyev Roman
Published: January 2023

Methods for estimating the parameters and states of dynamical systems are an urgent task, the results of which are used in various fields, including processes in technical systems, cosmological and physical research, medical diagnostic systems, economics, finance, biotechnology, ecology and others. Despite significant scientific and practical advances in this area, researchers in many countries around the world continue to search for new methods of assessing the parameters and states of the studied objects and improving existing ones. An example of such methods is digital and optimal filtering, which have been widely used in technical systems since the middle of the last century, in particular, in the processing of financial and economic data, physical experiments and other information technologies for various purposes. The model and algorithms of granular filtering are considered on a practical example - a variant of the problem of global localization of mobile robot (global localization for mobile robots) or the problem of hijacked robot (hijacked robot problem). In the general embodiment, it is to determine the position of the robot according to the data from the sensor. This problem was generally solved by a number of probabilistic methods in the late 1990s and early 2000s. The task is important and finds application in mobile robotics and industry. The tasks of positioning submarines, aircraft, cars, etc. are essentially similar.
Intelligence Diagnostics of Heart Disease Based on Neural Networks Ensemble Use
Authors: Sineglazov Victor , Smirnova Julija
Published: January 2023

The problem of constructing an intelligent system for diagnosing heart valve disease is considered. It is shown that the diagnosis is established on the basis of the results of a standard examination, which includes anamnesis, laboratory data, electrocardiogram, echocardiography and Doppler examination. The use of hybrid neural networks of ensemble topology is substantiated for solving the problem. In order to show that the appropriate neural networks for composing an ensemble can be effectively selected from a set of available neural networks, an algorithm for structural-parametric synthesis of hybrid neural networks of ensemble topology is proposed. As for training component neural networks it is used Bagging approach. Accuracy and diversity were used as criteria. The structure of the diagnostic system for recognition of valvular heart disease is presented. The results of research of the developed software are presented. As for training component neural networks, the Baging approach is used. The structure of the diagnostic system for recognition of valvular heart disease is presented. The results of the study of the developed software are presented.
Equalization of the Measuring System Frequency Response in the Objective Assessment of Speech Intelligibility
Authors: Prodeus Arkadiy
Published: January 2023

Voice control of an unmanned aerial vehicle has a number of advantages if the operator is indoors. In this case, the distortions of speech commands caused by the influence of noise interference can be significantly reduced. However, the disadvantage of such control is the negative impact of reverberation on speech intelligibility. Therefore, it is advisable to perform a preliminary assessment of speech intelligibility in the room before the session of unmanned aerial vehicle controlling. This assessment can be performed by the modulation method, using the room impulse response estimate. If a non-professional quality loudspeaker and microphone are used to estimate the room impulse response, errors in the room impulse response estimate can affect the results of speech intelligibility assessment. In this paper, two techniques of equalizing of non-professional quality level audio equipment used in assessing the room impulse response have been compared. It is shown that a dividing the frequency response of the “loudspeaker-room-microphone” system into the amplitude frequency response of the “loudspeaker-microphone” subsystem provides almost the same equalization quality as a more complex technique of adaptive filtering. At the same time, studies have shown that such equalization is not necessary, provided that the frequency response unevenness of the “loudspeaker-microphone” subsystem does not exceed 8–10 dB in the frequency range from 100 Hz to 11 kHz.
On Noise Effect in Semi-supervised Learning
Authors: Sineglazov Victor , Lesohorskyi Kyrylo
Published: January 2023

The article deals with the problem of noise effect on semi-supervised learning. The goal of this article is to analyze the impact of noise on the accuracy of binary classification models created using three semi-supervised learning algorithms, namely Simple Recycled Selection, Incrementally Reinforced Selection, and Hybrid Algorithm, using Support Vector Machines to build a base classifier. Different algorithms to compute similarity matrices, namely Radial Bias Function, Cosine Similarity, and K-Nearest Neighbours were analyzed to understand their effect on model accuracy. For benchmarking purposes, datasets from the UCI repository were used. To test the noise effect, different amounts of artificially generated randomly-labeled samples were introduced into the dataset using three strategies (labeled, unlabeled, and mixed) and compared to the baseline classifier trained with the original dataset and the classifier trained on the reduced-size original dataset. The results show that the introduction of random noise into the labeled samples decreases classifier accuracy, while a moderate amount of noise in unmarked samples can have a positive effect on classifier accuracy.
About Algorithms of Target Positioning
Authors: Hley Oleg , Sineglazov Victor
Published: January 2023

Software has been developed for the system most suitable for wind shear detection. The formulation of the target designation problem is presented. The features of modern radars are considered. The aim of the work is to find the most suitable system for detecting wind shear and to develop software for this system that offers the pilot a turnkey solution for flying through the danger zone of wind shear. The paper presents the definitions of wind shear, statistics of air crashes caused by this phenomenon. The systems for determining wind shear are described and the most suitable system is selected. The principle of operation and the algorithm of operation of the Doppler radar station are given. A simulation of the detection of a dangerous wind shear zone was carried out. The pilot uses the proposed software solution. Thus, the task of determining the wind shear zone and the decisions proposed on this basis to fly around the dangerous zone have been completed. The results show that introducing random noise into labeled samples degrades the accuracy of the model, while introducing random noise into unlabeled data can, on the contrary, increase the accuracy of the model.
Control Laws of the Aviation Gas Turbine Engine
Authors: Tovkach Serhii
Published: January 2023

The article is devoted to the solution of an important scientific and applied problem of improving the dynamic characteristics of an aviation engine and ensuring flight safety and the efficiency of aircraft operation, taking into account the properties of adaptive control of an aviation gas turbine engine: . Based on the concept of creating perspective aviation engines with an increased level of control automation and with units operating at elevated temperatures and protected from high-energy electromagnetic radiation, the basic laws of controlling an aviation gas turbine engine in throttle modes, low-throttle mode, gas intake and discharge modes, and start-up mode are defined. To improve the working process of the engine, it is proposed to use the gas turbine engine control system as a mechatronic system based on the principle of adaptation. With the help of the Laplace transformation, the dynamic characteristics of the power plant were determined and the mathematical model of the power plant was investigated as a constructive aspect of the automatic control system. The gas turbine and the supersonic air manifold can to some extent be considered as independent control objects, replacing the connections between them with disturbing influences. For the control and limitation circuits, it is necessary to create control programs that calculate the values of the control parameters of the turbocharger rotor speed and gas temperature behind the turbine. Regulation of fuel consumption is carried out according to the derivative of the control parameters.
Recurrent Neural Networks for Time Series Forecasting. Choosing the best Architecture for Passenger Traffic Data
Authors: Sibruk Leonid , Zakutynskyi Ihor
Published: January 2023

Accurately predicting the urban traffic passenger flow is of great importance for transportation resource scheduling, planning, public safety, and risk assessment. Traditional statistical approaches for forecasting time series are not effective in practice. They often require either strict or weak data stationarity, which is almost impossible to obtain with real data. An alternative method is time series forecasting using neural networks. By their nature, neural networks are non-linear and learn based on input and output data. With this approach, increasing the efficiency of the network is reduced to increasing the amount of data of the initial sample. Today, the class of recurrent neural networks is mainly used for forecasting time series. Another important stage is the choice of neural network architecture. In this article the use of long short term memory and gated recurrent units architecture is considered and also is compared their performance for passenger flow forecasting.
Control and Monitoring Subsystem of an Unmanned Aerial Vehicle
Authors: Sineglazov Victor , Tsoba Artur
Published: January 2023

The object of the research is the unmanned aerial vehicle monitoring system, the data exchange protocol and the unmanned aerial vehicle control line. A study was conducted, based on the results of which the unmanned aerial vehicle protection protocol and criteria were selected. An algorithm has been developed that ensures the establishment of the fact that the received radio radiation belongs to the class of radio signals of unmanned aerial vehicle remote control systems with pulse-position and pulse-code modulations. The results of practical testing of possible solutions are presented and the results of the functioning of the developed communication components are given. The user interface was developed, and the hybrid data exchange protocol was implemented in software.
Comparative Computer Design of Four-bits Nanomultiplier
Authors: Melnyk Oleksandr , Kravets Maksym , Kravets Valerii
Published: January 2023

This paper presents a simulation circuit of a 4x4 Baugh–Wooley multiplier on a proposed one-bit full adder. The results included a comparison with other adders, an analysis of energy dissipation depending on temperature and dissipated power of the existing and proposed multipliers in mW. As a result, it was found that the proposed adder has better properties compared to similar ones. As a result of the work, the simulation circuit of the Baugh–Wooley multiplier 4x4 was performed, and the simulation result was obtained. Computer-edit simulate and design is performed in QCA DESIGNER software.
Experimental Research of Integrated Navigation Systems in Problems of Quadrotor Path Tracking
Authors: Hryshchenko Yurii , Pinchuk Tetiana , Romanenko Viktor , Slobodian Oleksandr
Published: January 2023

This article deals with issues related to assessing the impact of the pilot's psychophysiological pressure on the quality of the flight piloting technique. The quality of the aircraft control technique was evaluated by changing one of the flight parameters, namely the pitch angle during the landing approach. The analysis of the autocorrelation functions of the controlled parameter and their spectra were used to conduct the research. The proposed mathematical apparatus makes it possible to track the moment the pilot's psychophysiological pressure increases to a state of emotional instability, build a function of its influence on the quality of the flight piloting technique, and develop an effective method of anti-stress training for crews.
Investigation of different nutrient levels applied during irrigation in the self-rooted and grafted watermelon production
Authors: Krizsán Patrik , Balázs Gábor
Published: January 2023

My work in the form of water-soluble fertilizers for self-rooted and grafted watermelon cultivation, applied simultaneously with irrigation, it concentrates on examining different nutrient levels during the growing season. Within that, I focused on the application of macronutrients - nitrogen, phosphorus, potassium. Therefore, I set up 4 different nutrient levels for both types of seedlings, in two replicates, of which I developed a phosphorus, a nitrogen, and a potassium overweight nutrient level, and a nutrient level in which all three nutrients were in equal proportions. The latter formed the control. For both self-rooted and grafted seedlings, I wondered whether changes in nitrogen, phosphorus, and potassium would affect, and if so, the positive or negative direction of plant development, or the quality or the weight of the crops. My research pointed out that at the beginning of the growing season, before or during the first flowering period, higher amounts of phosphorus applied simultaneously with irrigation have a positive effect on the development and yield and quality of grafted plants throughout the growing season. Higher phosphorus content applied by irrigation before and during the first flowering period also promotes flowering of self-rooted plants and improves their crop quality. But in their case, the higher potassium active substance applied during the ripening period has the most positive effect on their yield results. Respectively, the experiment showed that the nutrients applied during nutrient solution are of great importance.
Comparative experiment of various irrigation technologies in maize (Zea mays L.)
Authors: Bencze Gábor , Komlósi Ádám , Futó Zoltán
Published: January 2023

Development of domestic maize cultivation largely depends on the applied agrotechnics. In keeping the increase in crop increases, the goal is to minimize crop fluctuations, and there is also an important role in the proper water supply. In our country, the yield of maize is a good water supply. The yield of maize can be significantly increased by improving the water supply of the plant. In many areas there are only very few water available for professional irrigation, so it is increasingly need to focus on modern, most water-saving irrigation technologies. In our experiment, we compare two irrigation techniques. The rain-like watering with console and the solenoid valve-controlled tape drip irrigation. Our examinations extend to mapping the properties of maize that can cause changes in the effect of irrigation and, of course, to develop crop quantities available by various irrigation technologies, since these results provide the proper income for the producer. The research was carried  in Szarvas, at the school experimental field of the Hungarian University of Agriculture and Life Sciences, Department of Irrigation and Melioration, in 2020.
Statistical analysis of excess water on drainage systems in the northern part of Serbia
Authors: Vranešević Milica , Bezdan Atila , Blagojević Boško
Published: January 2023

Drainage systems in Serbia are mainly designed to evacuate excess water generated in the winter-spring period, which occurs as a result of snow accumulation during the long and wet winter and its sudden melting with the parallel appearance of spring rains. Dimensioning of the drainage system is done in such a way as to satisfy the needs of draining the design excess water, which is usually calculated using the water balance. Applying statistical analysis based on distributions of probability, the results of the future occurrence of excess water can be predicted. The paper tests the distribution that best corresponds to the empirical distribution of excess water obtained by applying the water balance. The Kolmogorov-Smirnov, Anderson-Darling, and χ2 tests were used to test a number of theoretical distributions, and basis on those tests Generalized Extreme Value (GEV) distribution was selected, which is often used in hydrological analyzes. The probabilities of excess water on drainage systems for the return period of 5, 10, 50, and 100 years were obtained. The results of the calculations can be used in the reconstruction of existing drainage systems, since most of them were designed more than 50 years ago, or in the planning and design of new drainage systems.
Correlation of secondary salinization and soil conditioning in vegetable production under irrigation with saline water
Authors: Rivera-García Arzu , Tuba Géza , Kovács Györgyi , Sinka Lúcia , Zsembeli József
Published: January 2023

Secondary salinization is a main problem around the world due to climate change and intrusion of salts in the soil by improper irrigation. Our aim was to study the soil salinization process by simulating vegetable production under irrigation with saline water (total soluble salt content ⁓700 mg L-1). We tested 6 different technologies of soil conditioner application and 3 vegetable crops with different sensitivity to salinity in a small plot experiment set up on a meadow chernozem soil. During the irrigation season in 2020, we regularly measured the electric conductivity (ECa) and the soil moisture content (v/v%) in the topsoil (0.1 m) and analysed these parameters with Pearson’s bivariate correlation method. As our hypothesis, we expected that there is correlation (PCC) among ECa, soil moisture content, soil conditioning, and providing the possibility to quantify the secondary salinization process. We found that all the 4 biosynthetic soil conditioners technologies minimized the harmful effect of saline irrigation. In the case of the not salt tolerant (NT) peas, the PCC correlation was higher to compost application and control expressing more intense salinization. NT beans showed a weaker correlation with lower PCCs, which must be due to its higher root activity leading to intensive leaching resulting in a lower degree of salinization. In the case of chilli with low salt tolerance (LT), micro dosing of soil conditioners was not effective in mitigating the harmful effect of secondary salinization, only full doses decreased the PCC. The salt tolerance of the investigated vegetable crops was also manifested in the yields. We found that PCC is a suitable statistical method to understand and quantify the process of secondary salinization.
Macro-, mesoelement and sodium content of plant parts of energy willows irrigated with effluent water of agricultural origin
Authors: Kolozsvári Ildikó , Kun Ágnes , Jancsó Mihály , Bozán Csaba , Gyuricza Csaba
Published: January 2023

Irrigation of recycled water can be considered as an element of integrated water management, in which the nutrients in the water are used and decomposed by natural processes, while water retention is realized at the local level. In our study, we used the effluent of an intensive African catfish farm for irrigation. The farm uses thermal water for fish farming, which is characterized by a high sodium content. At the same time, the effluent is rich in organic matter and minerals. The planting of the willow plants in the study area, which is close to 3 ha, took place in the spring of 2014 with a variety candidate 'Naperti'. During the experiment, seven treatments were set up, of which one was non-irrigated, three were irrigated with the water of the Körös oxbow lake and three were irrigated with the effluent water. Three doses of irrigation water (15, 30, 60 mm) were applied to the one-week irrigation intervals with a microspray irrigation system. At the end of the growing season, samples of the plant parts (leaf, stem, root) were collected, during which mineral element analysis was performed with special regard to nitrogen, phosphorus, potassium, calcium, magnesium and sodium levels. The results of the study showed a significant difference in macroelements only for nitrogen for all plant parts. However, there was no significant difference in case of the mesoelements. In the case of sodium, compared to the leaf and stem plant samples, the root part accumulated a significant amount of salt, especially in the samples irrigated with 30 mm effluent water, where the Na content reached 521 mg/kg-1.
Решение интегральных уравнений Фредгольма с невырожденными ядрами последовательными приближениями квадратурой с десятым порядком погрешности
Authors: Волосова Н.К. Н.К. , Волосов К.А. , Волосова А.К. , Пастухов Д.Ф. , Пастухов Ю.Ф
Published: January 2023

Для численного решения уравнения Фредгольма второго рода с невырожденным ядром методом последовательных приближений предложена квадратурная формула с десятым порядком погрешности, если число узлов на отрезке интегрирования кратно десяти. Новая формула по сравнению с формулой Симпсона дает верных 15-16 значащих цифр вычисленной функции решения даже при небольшом числе интервалов 10,20 на отрезке. Полученный алгоритм существенно повышает точность и уменьшает время вычислений. В то время как формула Симпсона дает только 13 значащих цифр с числом интервалов 1000 на отрезке.