bluuebunny/crossref_metadata_2025 huggingface dataset:
Impacts of entropy generation in second-grade fuzzy hybrid nanofluids on exponentially permeable stretching/shrinking surface
Authors: Zulqarnain Rana Muhammad , Nadeem Muhammad , Siddique Imran , Mansha Adeel , Ghallab Abdullatif Saleh , Samar Mahvish
Published: December 2023

The present investigation aims to use entropy analysis to analyze the unsteady Magnetohydrodynamic (MHD) flow in a second-grade fuzzy hybrid $$\left( {{\text{Al}}_{{2}} {\text{O}}_{{3}} - {\text{Cu/SA}}} \right)$$

Al
2

O
3

-
Cu/SA

nanofluid over an exponentially shrinking/stretching surface. The model for hybridization of the mixture of alumina $$\left( {{\text{Al}}_{{2}} {\text{O}}_{{3}} } \right)$$

Al
2

O
3

and copper (Cu) nanoparticles in the sodium alginate (SA) base fluid under heat source/sink, nonlinear thermal radiation, and viscous dissipation. The fundamental partial differential equations (PDEs) are simplified using an appropriate similarity conversion to generate the ordinary differential equations (ODEs). The analytical computation occurs in the MATHEMATICA program implementing the homotopy analysis method (HAM). In terms of code validity, our results are preferable to previous findings. The features of several parameters against the velocity, surface friction coefficient, entropy, temperature, and Nusselt number are described through graphs. According to our findings, the rise in the Brinkman and Reynolds numbers enhanced the total entropy of the system. Furthermore, the nanoparticle volume fraction and viscus dissipation magnifies the fluid temperature while retards the flow profile throughout the domain. Fluid velocity declined due to the Lorentz force using magnetic impact applications. The imprecision of nanofluid and hybrid nanofluid volume fractions was modelled as a triangular fuzzy number (TFN) [0%, 1%, 2%] for comparison. The double parametric approach was applied to deal with the fuzziness of the associated fuzzy parameters. The nonlinear ODEs convert into fuzzy differential equations (FDEs) and use HAM for the fuzzy solution. From our observation, the hybrid nanofluid displays the maximum heat transfer compared to nanofluids. This important contribution will support industrial growth, particularly in the processing and manufacturing sectors. The percentage increase in skin friction factor is 18.3 and 15.0 when $$\alpha$$
α
and $$\beta$$
β
take input in the ranges of 0 ≤ $$\alpha$$
α
 ≤ 0.8 and 0 ≤ $$\beta$$
β
 ≤ 1, respectively.
Pendelluft in patients with acute respiratory distress syndrome during trigger and reverse triggering breaths
Authors: Lin Wei-Chieh , Su Pei-Fang , Chen Chang-Wen
Published: December 2023

Pendelluft, the shift of air from non-dependent to dependent lung regions, is known to occur during active breathing in ventilated patients. However, information about pendelluft in ARDS patients under assisted mechanical ventilation is limited. In this prospectively collected and retrospectively analyzed study, we combined electrical impedance tomography and respiratory mechanics monitoring to quantitatively examine pendelluft in trigger and reverse triggering breaths in 20 mechanically ventilated patients with ARDS during the transition from controlled to active breaths under volume-cycled ventilation. Besides the 10 resting breaths in each patient, 20% of the counted active breaths were selected based on three levels of esophageal pressure swing (∆Pes): low (< 5 cm H2O, breaths = 471), moderate (≥ 5, < 10 cm H2O, breaths = 906), and high effort (≥ 10 cm H2O, breaths = 565). The pendelluft response to breathing efforts was significantly greater in trigger breaths than in reverse triggering breaths (p < 0.0001). Based on the pendelluft-∆Pes slope (ml/cmH2O), there were two distinct patterns of effort-related pendelluft (high vs. low pendelluft group). For trigger breaths, the high pendelluft group (n = 9, slope 0.7–2.4 ml/cmH2O) was significantly associated with lower peak airway/plateau pressure and lower respiratory system/lung elastance than the low pendelluft group (n = 11, slope − 0.1 to 0.3 ml/cmH2O). However, there was no difference in respiratory mechanics between high and low pendelluft groups for reverse triggering breathes. The use of ∆Pes to predict pendelluft was found to have a low positive predictive value.
Reduced stress perfusion in myocardial infarction with nonobstructive coronary arteries
Authors: Steffen Johansson Rebecka , Tornvall Per , Sörensson Peder , Nickander Jannike
Published: December 2023

Myocardial infarction with nonobstructive coronary arteries (MINOCA) has several possible underlying causes, including coronary microvascular dysfunction (CMD). Early cardiovascular magnetic resonance imaging (CMR) is recommended, however cannot provide a diagnosis in 25% of cases. Quantitative stress CMR perfusion mapping can identify CMD, however it is unknown if CMD is present during long-term follow-up of MINOCA patients. Therefore, this study aimed to evaluate presence of CMD during long-term follow-up in MINOCA patients with an initial normal CMR scan. MINOCA patients from the second Stockholm myocardial infarction with normal coronaries study (SMINC-2), with a normal CMR scan at median 3 days after hospitalization were investigated with comprehensive CMR including stress perfusion mapping a median of 5 years after the index event, together with age- and sex-matched volunteers without symptomatic ischemic heart disease. Cardiovascular risk factors, medication and symptoms of myocardial ischemia measured by the Seattle Angina Questionnaire 7 (SAQ-7), were registered. In total, 15 patients with MINOCA and an initial normal CMR scan (59 ± 7 years old, 60% female), and 15 age- and sex-matched volunteers, underwent CMR. Patients with MINOCA and an initial normal CMR scan had lower global stress perfusion compared to volunteers (2.83 ± 1.8 vs 3.53 ± 0.7 ml/min/g, p = 0.02). There were no differences in other CMR parameters, hemodynamic parameters, or cardiovascular risk factors, except for more frequent use of statins in the MINOCA patient group compared to volunteers. In conclusion, global stress perfusion is lower in MINOCA patients during follow-up, compared to age- and sex-matched volunteers, suggesting that CMD may be a possible pathophysiological mechanism in MINOCA.

Clinical Trial Registration: Clinicaltrials.gov identifier NCT02318498. Registered 2014-12-17.
Prediction of chronic kidney disease progression using recurrent neural network and electronic health records
Authors: Zhu Yitan , Bi Dehua , Saunders Milda , Ji Yuan
Published: December 2023

Chronic kidney disease (CKD) is a progressive loss in kidney function. Early detection of patients who will progress to late-stage CKD is of paramount importance for patient care. To address this, we develop a pipeline to process longitudinal electronic heath records (EHRs) and construct recurrent neural network (RNN) models to predict CKD progression from stages II/III to stages IV/V. The RNN model generates predictions based on time-series records of patients, including repeated lab tests and other clinical variables. Our investigation reveals that using a single variable, the recorded estimated glomerular filtration rate (eGFR) over time, the RNN model achieves an average area under the receiver operating characteristic curve (AUROC) of 0.957 for predicting future CKD progression. When additional clinical variables, such as demographics, vital information, lab test results, and health behaviors, are incorporated, the average AUROC increases to 0.967. In both scenarios, the standard deviation of the AUROC across cross-validation trials is less than 0.01, indicating a stable and high prediction accuracy. Our analysis results demonstrate the proposed RNN model outperforms existing standard approaches, including static and dynamic Cox proportional hazards models, random forest, and LightGBM. The utilization of the RNN model and the time-series data of previous eGFR measurements underscores its potential as a straightforward and effective tool for assessing the clinical risk of CKD patients concerning their disease progression.
Dynamic modeling and analysis of the rotor–stator coupling system of a coaxial contra-rotating gearbox
Authors: Zhang Donglin , Cui Ji , Zhu Rupeng , Li Miaomiao
Published: December 2023

In this paper, a main gearbox using an encased differential gear train to achieve coaxial contra-rotating is considered, and a dynamic modeling method of the rotor–stator coupling system of the gearbox based on box model updating is introduced. The transverse torsional dynamic model of the gear transmission subsystem is established based on the lumped parameter method. The finite element model of the box is updated according to the modal test data, and the reduced dynamic parameters of the box are obtained. According to the displacement coordination condition, the dynamic model of the rotor–stator system of the gearbox is established. The vibration response of the transmission components with or without the coupling box is calculated by numerical integration, and the response of the box caused by the dynamic support reaction force is analyzed by the finite element method. The results show that the vibration peak and fluctuation range of the transmission parts with coupling box are smaller than those without coupling box. The box response at the support of the input bevel gear pair is large, while that at the support of the output shaft is small.
The association of serum choline concentrations with the risk of cancers: a community-based nested case–control study
Authors: Li Wenqiang , Li Chong , Liu Tong , Song Yun , Chen Ping , Liu Lishun , Wang Binyan , Qu Jun
Published: December 2023

Few studies have been designed to investigate the effect of serum choline on the risk of incident cancer. This study aims to explore the association between serum choline and the risk of new-onset cancer. We conducted a case–control study, including 199 patients with incident cancer and 199 matched controls during a median of 3.9 years of follow-up, nested within the China Stroke Primary Prevention Trial. Cubic spline regression (RCS) and conditional logistic regression analysis was used to assess the association of serum choline and incident cancer risk. We observed a positive dose–response association between serum choline levels and the risk of overall (p for overall = 0.046) and digestive system cancer (p for overall = 0.039). Compared with patients with the lowest choline levels (Q1 group), patients in the highest levels of choline (Q4) had a 3.69-fold and 6.01-fold increased risk of overall (OR = 3.69, 95% CI 1.17–11.63) and digestive system cancer (OR = 6.01, 95% CI 1.14–31.67). Elevated choline levels (per SD, 11.49 μg/mL) were associated with a higher risk of overall cancer among participants who were older, male, and smokers in the subgroup analyses. We found a positive association between elevated levels of serum choline with increased risk of incident cancer. Our findings have critical clinical implications for cancer prevention and diagnosis.

Trial registration CSPPT, NCT00794885. Registered: November 20, 2008. https://www.clinicaltrials.gov/ct2/show/study/NCT00794885https://www.clinicaltrials.gov/ct2/show/study/NCT00794885.
Singapore COVID-19 data cross-validation by the Gaidai reliability method
Authors: Gaidai Oleg , Yakimov Vladimir , Sun Jiayao , van Loon Eric-Jan
Published: December 2023

Novel coronavirus infection (COVID-19) has exserted certain burden on global public health, spreading around the world with reportedly low mortality and morbidity. This study advocates novel bio and health system reliability approach, especially suitable for multi-regional environmental and health systems. Advocated spatiotemporal method has been cross-validated, versus well established bivariate Weibull method, based on available raw clinical dataset. The purpose of this study was to assess risks of excessive coronavirus death rates, that may occur within any given time horizon, and in any region or district of interest. This study aims at benchmarking of the novel Gaidai bio-reliability method, allowing accurate assessment of national public health system risks, for the years to come. Novel bio-system reliability approach is particularly suitable for multi-regional environmental and health systems, monitored for a sufficiently representative period of time. In case when underlying bio-system is stationary, or the underlying trend is known, long-term future death rate risk assessment can be done, and confidence intervals can be generated. Advocated methodology may to be useful for a wide variety of public health applications, thus, it is not limited to the example, considered here.
Multiple views in single‐path synthetic aperture sonar for mine counter‐measures classification and pre‐identification
Authors: Malkasse Jean‐Philippe , Dugelay Samantha , Burlet Nicolas , Le Gall Yann , Simon Mathieu
Published: December 2023

The authors present exploitation of Multiple Views in Single‐Path (MVSP) Synthetic Aperture Sonar (SAS). The authors demonstrate the interest of MVSP SAS for underwater Mine Counter‐Measures (MCM) with unmanned vehicles, to comply with requirements for performances of detection and classification and time constraints. The authors here lay the emphasis on exploitation in reduction of false alarms of classification by alleviating the ambiguity between mines and natural bottom objects. Finally, the authors show that MVSP SAS is offering a pre‐identification tool with high impact on MCM process duration.
A note on analyzing the stability of oscillator Ising machines
Authors: Bashar Mohammad Khairul , Lin Zongli , Shukla Nikhil
Published: December 2023

The rich non‐linear dynamics of the coupled oscillators (under second harmonic injection) can be leveraged to solve computationally hard problems in combinatorial optimization such as finding the ground state of the Ising Hamiltonian. While prior work on the stability of the so‐called Oscillator Ising Machines (OIMs) has used the linearization method, in this letter, the authors present a complementary method to analyze stability using the second‐order derivative test of the energy/cost function. The authors establish the equivalence between the two methods, thus augmenting the tool kit for the design and implementation of OIMs.
Potential of mushroom bioactive compounds for use in pharmacology
Authors: Shamtsyan M. , Kolesnikov B. , Friui M. , Sorokin S.
Published: December 2023

Mushrooms contain many different biologically active compounds. The immunomodulatory action of mushroom β-glucans has been shown. Native liquids of mushroom cultivation can be sources of different valuable enzymes with significant potential for use in medicine and pharmacology.
Variety of canned pastes from cod and its liver with improved quality
Authors: Volchenko Vasily , Grokhovsky Vladimir , Derkach Svetlana , Shokina Yulia , Goncharova Galina
Published: December 2023

A series of canned pastes based on cod and its liver has been developed by choosing and optimizing its formulation. There are canned pastes from cod with mustard sauce and sour cream, from cod liver and carrot, from cod liver, vegetables and mushrooms, from cod liver and chicken meat. The chemical and fatty acid compositions of last paste have been determined, they have shown ratio of ω-3 to ω-6 about 1:2.5 which can have preventive and therapeutic effect.
Conceptualisation of measurability indicators of market actors’ interactions for sustainable development
Authors: Mitenkov A.V. , Chupakhin V.V.
Published: December 2023

The article proposes a method of market structure report indicators analysis within the framework of the paradigm "Structure-Behaviour-Effectiveness" with the application of PAEI code within the life cycle of market subjects for sustainable development. PAEI codes by stages of the subject's development are considered, the correspondence of the code to the indicators of the market structure report is determined. As a result, a set of key indicators of the market structure report is developed in accordance with the phases of the life cycle of its subject as a tool to improve subject-orientated market analysis in the world sustainable development.
International Environmental Law: Conceptual Constants and Cognitive Dominants
Authors: Bolshakova Mariia , Garamyan Arusyak , Paliy Tatiana , Poteryakhina Inna , Rudenko Natalia
Published: December 2023

The research is aimed at defining the main concepts of international environmental law which reflect the most urgent environmental problems at different stages of the development of this area of law. Using several cross-disciplinary methods to analyse the texts of three international environmental agreements, the authors aim at proving the hypothesis that the development of international environmental law can be characterized by transformation from specific to universal problems. The authors believe that the problems addressed in a chronologically earlier document are relatively specific, while later documents focus on more general issues. Such change of priorities is supported by the results of linguo-cognitive analysis of the texts under study. Various conceptual constants are typical of different stages of development of international environmental law. The constants found in the documents of different periods of time accumulate to shape the cognitive dominants of the discourse of international environmental law, which makes it possible to trace the evolution of environmental ideas at a global scale.
Economic and mathematical modeling of demand subsidies for photovoltaic technologies
Authors: Kartsan Igor , Zhukov Aleksandr , Pronichkin Sergey , Gedzyun Viktor , Bondareva Marina
Published: December 2023

Determining the need for resources of development institutions is formalized in the form of a multi-criteria decision-making problem, for the solutions of which the principle of sequential maximin is used. Development institutions are extremely important for the formation of supply and demand for scientific knowledge of photovoltaic systems to achieve global sustainable development goals, they are necessary for sustainable economic growth and diversification of the national innovation system. The main characteristics of the national innovation system that can affect subsidizing the demand for scientific knowledge are identified, changes in these characteristics are analyzed and a number of economic and mathematical models are constructed to predict the effectiveness of development institutions in the field of photovoltaic technologies. The definition of the resource needs of development institutions is formalized in the form of a multi-criteria decision-making task, for which the principle of sequential maximum is used.
Economic assessment of the cost of reducing the delivery time for cargo owners when sending goods through the international transport corridor “North-South”
Authors: Zhuravleva Natalia , Gulyi Ilia
Published: December 2023

Purpose: substantiation of the author's methodology for assessing the economic effect of saving time in supply chains, analysis based on the proposed methodology for saving time of commodity producers when sending goods from St. Petersburg (North-Western Federal District of Russia) to India, the cargo is sent along the eastern branch of the international transport corridor “North-South” to compared with the option of delivery via the “deep sea” technology via the Mediterranean Sea and the Suez Canal. Methods: economic modeling, statistical parameterization, analysis and optimization of supply chains. As a result of the conducted research: the parameters of cargo shipments from the North-Western Economic District, the region of the St. Petersburg agglomeration to India for five different delivery options are systematized; the author's methodology for assessing the economic effect of saving time is disclosed, on the basis of which the effects of saving time for goods sent to India from St. Petersburg are determined, when switching from the “deep sea” supply option to the “North-South” multimodal eastern route option. Conclusion: as a result of the study, high-yield cargoes were identified, in particular, pulp, paper, metal structures, the dispatch of which from Russia to India via the international transport corridor is economically attractive, since the effect of saving time overrides the higher cost of delivery.
Assessment of development prospects, economic effects and return on investment in the infrastructure of the international transport corridor “North-South”
Authors: Kazanskaya Liliya , Chetchuev Maksim
Published: December 2023

Objective: to substantiate the methodology of economic assessment of the return on investment in the development of the infrastructure of the international transport corridor “North-South” and on its basis to calculate the terms of return on investment of the Russian side (Russian investors) according to the basic and optimistic options. Methods: feasibility study, scenario modeling and forecasting, supply chain modeling. As a result of the conducted research: the methodology of economic assessment of investments in the development of the international transport corridor is justified, indicators and algorithms for calculating transport and non-transport effects are proposed, the terms of return on investments of the Russian side (Russian investors) in the infrastructure of the international transport corridor “North-South”, in the amount of 13.2 billion dollars, are estimated The United States, which until 2030 amounted to: according to the baseline scenario: 64 years, according to the optimistic scenario: 18 years.
Identification of economic risks of investment projects of mainline railway transport infrastructure construction
Authors: Kazaku Ekaterina , Leontiev Alexander , Zvereva Elena
Published: December 2023

Study of the issues of identification, analysis, and comparative assessment of the risks of violations of the safety of the main railway transport infrastructure. The aim of the study: is to develop a methodology for the identification of economic risks of investment projects of construction of mainline infrastructure of railway transport. The object of the study: railway transport enterprises involved in all stages of the life cycle of the mainline infrastructure of railroad transport. The subject of the study: tools and procedures for the identification of economic risks of violations of the security of trunk railway transport infrastructure. In the turbulent global economy, the effectiveness of project management is based on the perception of the human factor as the main in the formation of aggregate uncertainty. Large infrastructure companies should pay special attention to the identification, analysis, and assessment of project risks. One of the key figures in Russia's transport communication, influencing not only domestic traffic flows, but also international logistics chains, is JSC "Russian Railways". Disruptions of the transportation process due to the realization of risks at the main infrastructure facilities of JSC "Russian Railways" predetermine economic consequences both for consumers of services, operators, and infrastructure owners.
Hardware implementation of a neuron for neuromorphic optical system
Authors: Pankov Mikhail
Published: December 2023

Specific features of neuromorphic systems construction and aspects of basic elements functions realisation are discussed. Hardware implementations of basic elements of pulsed neuromorphic optical system - synapses and neurones - based on the phase state change of thin-film structures made of chalcogenide materials under the influence of laser pulses are described. Calculations of optical characteristics of GeSbTe thin films in multilayer structures have been carried out. The hardware implementation of the main functions of optical neurons was analysed on the model with multilayer coatings based on phase-changeable materials.
Application of new technologies in narrow Fields
Authors: Said-Usmanovich Magomed Khaliev , Bagov Artur , Razina Irina
Published: December 2023

The agricultural sector, a pivotal player in shaping our future, is confronted with an array of challenges that necessitate innovative solutions. This article serves as a comprehensive exploration of the transformative role played by new technologies in agriculture, emerging as a beacon of hope in addressing the escalating issues facing the sector. In a landscape characterized by dynamic changes, be it technological advancements, evolving regulations, or the surging demands of a growing population, this work delves into the crux of the matter. Beginning with a succinct introduction to the topic, the narrative navigates through the complexities that mandate the implementation of new technologies in agriculture. The primary focus of this article lies in delineating the utilization of novel technologies and methods within the agricultural sector while concurrently shedding light on the intrinsic issues necessitating their adoption. Through a synergistic approach, the article aims to not only highlight the pressing challenges but also underscore the instrumental role of technology in paving the way for a more sustainable and efficient agricultural future.
Development of environmental competences of students in teaching natural sciences methodology
Authors: Adizova Nigora
Published: December 2023

The article describes the importance of imagination development methods in the development of students’ creative activity. In addition, a methodology for developing cognitive-pragmatic competence based on problem-solving technologies was developed. Problematic educational technologies in education, their specific features are revealed in detail.
Consumer perception of “Green” and Sustainable Development Goals (the case of fashion product design and charm attributes)
Authors: Chang Fang-Pang , Chia-Hui Huang , Chun-Chih Chen
Published: December 2023

This study aims to explore the impact of consumers’ perception of green and sustainable development goals (SDGs) image in fashion brands on their value perception and the attractiveness of product design. Fashion brands do not only strive for fashion, innovation, avant-garde, comfort, quality, and reasonable prices, but also placing increasing emphasis on sustainability, environmental friendliness, and social responsibility. As SDGs have become a shared vision and value perception among consumers, clothing with SDGs attributes is becoming fundamental for blue ocean strategies and competitive differentiation. Using the example of fashion brand SDGs image design, this study applies the “two-way questionnaire” method of the Kano quality model to investigate the correlation between quality evaluation of product cultural and ecological attributes and consumer satisfaction. Through the two-dimensional quality of the Kano model, consumers’ attitudes towards clothing with SDGs attributes are clarified more accurately. This study provides specific improvement plans to enhance the quality of green and sustainable fashion with SDGs attributes and emphasizes the incorporation of SDGs into the decision-making of fashion brands, which will have a significant impact on brand image.
Environmental education theme in nomadic camp: Bear
Authors: Sleptsov Yuri
Published: December 2023

The topics of environmental education in the nomadic camp, a temporary educational association for children of indigenous minorities of the North, are the study of the fauna of the environment, in our case the territory of the Moma National Nature Park. In environmental education, one of the topics is the knowledge of large predators, bears, which is one of the compulsory disciplines of education. This is due to the fact that the Evenes are one of the nomadic peoples of the North, who live in extreme conditions, where meeting bears is not new. The Moma Evens have developed a huge body of knowledge about the bear, which is passed on from generation to generation. Moma Evenes still strictly fulfil the customs and rituals related to the bear. The article presents various customs, rituals and legends related to this large predator, which children learn not only theoretically, but also in practice.
Environmental law: Discourse complexity indices
Authors: Ghashim Mohammad , Litvishko Olga , Pronchenko Elena
Published: December 2023

The problem of the complexity of legal texts has been a highlydemanded topic in modern cross-disciplinary research. Considering the fact that environmental law and its language is objectively recognized as complex due to its ongoing development, substantive nature and the diversity of the subject matter, an integrative character of the branch of law under study. the authors propose investigating the analysis of complexity of legal texts applying both qualitative and quantitative approaches. The authors conduct the research into the development and the specifics of environmental law supported by the analysis of its language features. The authors come to conclusion that apart from purely legal complexity factors, the language of environmental law possesses some features that may also be viewed as discourse complexity indices.
Models of the APIEd system under development to collect data on different levels of educational institutions
Authors: Nikich Anatolii , Kvashnin Denis , Chervonnova Nadezhda , Kovalev Ilya
Published: December 2023

The article discusses an approach to developing a web resource that aggregates information about educational organizations of various levels: from kindergartens to universities. The technology stack used is described, the stages of development of the main components of the system are demonstrated. The article presents the architecture of the system with a description of the operation of individual modules, including modules for determining the geo-location of an educational institution. It is shown how information about more than 150,000 educational institutions in Russia is collected on the basis of open data.
Investigation of the problem of multifunctional work of a bulldozer-loader by reducing the mathematical model to pairwise nested numerical methods
Authors: Isakov Kuttubek , Toktakunov Toktobek , Osmonov Kerimbek , Altybaev Amanbek
Published: December 2023

The article attempts to substantiate the urgency of the developed bulldozer-loader with the facts of the consequences of emergencies associated with the objects of work, describes the technical, economic and overview characteristics of existing bulldozer-loaders. For a previously compiled mathematical model with a system in conveniently simplified quasilinear ordinary differential equations, the motions of the centers of mass of the working bodies with generalized coordinates and generalized velocities are described. The force fields of motion drives and equilibrium force fields are recommended and calculated. A numerical method of shooting was used, a general algorithm and a program for solving the problem were compiled, which were implemented. The results of the calculation were obtained, showing the tendencies of the correctness of the algorithms.
The tariff policy of freight transportation in the context of railway transformation in Uzbekistan
Authors: Kasimova Asal , Tursunkhodjaeva Rashida
Published: December 2023

This abstract examines the tariff policy of freight transportation in the context of railway transformation in Uzbekistan. Given the changes taking place in the country's railway sector, particular attention is given to analyzing and assessing the impact of transformation on freight tariffs and transportation conditions. The study explores factors influencing tariff formation, such as changes in railway company structure, infrastructure modernization, reforms in government policy, and private investment attraction. The importance of establishing optimal tariffs and creating competitive conditions for freight transportation in times of transformation is emphasized, and recommendations are provided for improving the tariff policy considering the changes in Uzbekistan's railway sector. This study aims to provide useful information and practical recommendations for railway companies, government authorities, and stakeholders to facilitate the development of an effective tariff policy and contribute to the sustainable development of railway transportation in Uzbekistan.
Ensuring the environmental safety of a transport company in the direction of achieving sustainable development goals
Authors: Chechenova Liana
Published: December 2023

Objective: to develop approaches to solving problems in the field of sustainable development of a transport organization that can ensure the formation of practical tools and business process management, taking into account the optimization of activities in the field of environmental friendliness. Methods: the work was carried out on the basis of a study of trends in sustainable development of PJSC TransContainer; a comparative analysis of existing methods and tools for assessing and managing sustainable development. When considering issues in the field of risks, approaches, standards and guidelines on control and risk management are taken into account. Results. The conclusions are substantiated that the implementation of the sustainable development Goals in Transcontainer involves the integration of the principles of sustainable development into its business processes. On this basis, the goals of sustainable development and the actions of TransContainer to ensure their achievement have been coordinated, the system of ESG indicators has been modified to objectively assess the state of the Company in each of the aspects of sustainable development, risks in the field of sustainable development and risk management tools have been established. The practical significance lies in the justification of measures to achieve sustainable development in accordance with the principles developed by TransContainer.
Marketing and commercial problems and perspectives for interaction between participants of the transportation process
Authors: Voronov Alexander , Ksenofontova Tatiana , Popova Tatiana
Published: December 2023

Transport and logistics appeared one of the most vulnerable spheres in COVID-19 pandemics. The main reasons for the negative consequences are due to various factors like: closure of state borders, restrictions on movement of people and cargoes, disruption of value chains, decrease in demand from consumers of transport services and their purchasing power. Combination of these factors influenced all types of relationships in the in the transportation market. Nowadays the effective management should immediately react to the dynamic changes in the transport service market and requests of participants thereof. The article indicates the need for implementing digital transformation projects in the industry implying introduction of modern technologies for organizing the transportation process.
To evaluate the efficiency of UzTE16M3 locomotives on the high-speed railroad section
Authors: Ablyalimov Oleg , Osipov Artem , Kurilkin Dmitriy
Published: December 2023

The present research paper provides the outcomes of calculating the kinematic parameters of freight train movement using the graphical method on a virtual hilly section of a high-speed railroad when moving without stopping and with stops at the intermediate and end stations. Values of energy efficiency indicators for UzTE16M3 diesel locomotives in quantitative and monetary terms when driving a freight train of a unified train mass are obtained. The research results are presented in the form of tabular data and will be implemented by the specialists of the locomotive complex when justifying the efficiency of UzTE16M3 diesel locomotives in real operating conditions.
The stress state analysis of lattice tower support for 330 kV overhead line using the “USL” software package
Authors: Garanzha Igor , Tanasoglo Anton , Bakaev Sergey , Ademola Habeeb
Published: December 2023

In conditions of market economy, overhead power transmission line (OPTL) support structures must be low-cost and of guaranteed quality, the manufacture of which will require a minimum amount of steel. Therefore, it is necessary to improve overhead line supports, which is possible by clarifying the forces in the support elements and when designing using numerical methods. In this article, a mode of deformation of a corner dead-end support of OPTL is analysed, which is considered a spatially multiple indeterminate open system with flexible joints. Attention is given to the basic problems that can occur in setting initial parameters and constructing design models for such structures. There are a number of problems connected with a refined specification of internal longitudinal stresses in the components of an OPTL structure. In designing, the joint operation of the lattice components of the support spatial pattern model is analysed, and the inclusion of stiffening diaphragms and diagonal element members in the operation on all four faces is taken into account. On the basis of the design and the extension of the results, the internal forces obtained and the ones specified in the components of the pattern OPTL support on the similar values of loads were thoroughly compared. When calculating the spatial model of an anchor-corner support as a result of the joint work of lattice elements, a decrease in internal forces in the elements of the spatial model is observed on average by 6.8%, compared to the forces determined in a typical overhead line support from the same load values. It has been established that it is quite acceptable to calculate overhead line lattice structures in the USL software package since the error in determining the forces in the rods is within 2% and the computer time consumption is less than in other software packages.
Investigation of surface relief and uniformity of objects by methods of terahertz spectroscopy
Authors: Kuplevich M.A. , Stroganova E.V. , Galutskiy V.V. , Repin R.L.
Published: December 2023

A technique has been developed for constructing the relief of sample surfaces based on amplitude- and phase-frequency characteristics in the terahertz frequency range. Based on the conducted studies, 2D images of sample surfaces were obtained. The degree of coincidence of surface representations in the amplitude-frequency and phase-frequency spaces is quite high (about 75-80%), which creates prerequisites for further development of the method of constructing the energy relief of surfaces in order to study the internal structure and features of changes in the physical parameters of objects with an inhomogeneous structure.
Airfoil smoothing using unconditional optimization taking into account aerodynamic criteria
Authors: Yerokhin Alexander , Deniskin Yury , Dubrovin Anton , Sheryshev Alexei
Published: December 2023

The smoothing of airfoils in sections of the surface of an aircraft wing is considered. The issue of using the distribution of pressure and Mach number along the chord of an airfoil as criteria for smoothing efficiency is being studied. Smoothing is considered as a problem of unconditional minimization of a quadratic objective function. The arguments of the objective function are the second derivatives of the tabular function interpolating the contour of the airfoil. Minimization is performed using the gradient descent method.
Urban environment quality assessment and its ecological factors
Authors: Shepeleva Antonina , Shelest Ksenia , Maksimov Sergey , Aliyev Takhir , Zabolotskaya Tatiana
Published: December 2023

The article analyses the international and domestic experience of integrated approach and the process of indicators system formation for the urban environment quality assessment. The analysis of the presented indexes and indicators systems of the urban development quality showed that the ecological factors and the quality of urban environment occupy a significant place among the main components of the assessment. It is noted that during the last decade in the Russian Federation there was significantly increased an interest for the development of various indicators and mechanisms for a comprehensive assessment of the situation for solving economic, social and environmental problems in regions and cities. One of the generally accepted approach creation process results was the approval of the Methodology for the formation of the Urban Environment Quality Index. The possibilities of taking into account such ecological factors like the atmospheric air pollution, water bodies quality, the elimination of accumulated environmental damage results and a noise level were analysed in the Urban Environment Quality Index. It is concluded that at the first stage of expanding and optimizing the criteria system for calculating the Urban Environment Quality Index, it is necessary to consider the possibility of applying criteria reflecting the results of federal projects to resolve environmental problems of cities for the development of the urban environment and improving its quality.
Solid municipal waste management system at the regional level
Authors: Shelepina Natalia
Published: December 2023

Despite the small specific weight of solid municipal waste in the waste structure, its effective management is extremely important, as the environment and human health are highly dependent on it. The aim of the study is to assess the state of the solid municipal waste management system at the regional level (on the example of the Oryol region, Russian Federation) and the level of implementation of projects in the sphere of waste management. The research material was normative documents, statistical reports, analytical materials, and scientific publications on the research topic. The methods of search, selection, systematisation and design of literary sources, as well as methods of analysis, interpretation and systematisation of the obtained data were used in the process of preparation of the article. It has been established that the largest share in the composition of solid municipal waste in the Oryol region is food waste. The amount of waste generated tends to a gradual decrease. At the same time, the amount of buried waste is increasing, while utilisation and neutralisation are practically not performed. The level of investment attraction in the sphere of waste management in the region is insufficient. The process of introducing modern recycling technologies is slow. The regional reform of the solid municipal waste management system requires adjustment. It is necessary to improve the efficiency of the solid municipal waste management system through the introduction of modern technologies.
Ensuring microclimate parameters in the room using radiant ceiling panel cooling systems
Authors: Malikova Olga
Published: December 2023

The actual purpose of the study was to develop technical solutions for organizing of a panel-radiant cooling system using ceiling devices in a multifunctional building, as well as the calculated justification of its use in comparison with an alternative cooling system: a classic central air conditioning system and a "chiller - fan coil". The comparison was carried out according to the indicators of the microclimate comfort in the serviced room, taking into account the feasibility study. The evaluation method was used to determine the comfort factor of a person's thermal state, taking into account correction coefficients for the main hazards characteristic of multifunctional public buildings. The use of radiant ceiling panel cooling systems increases the comfort of people in the room due to the fact that there are no convective jets with low temperature and high air velocity. At the same time, the most favorable temperature allocation over the height of the room is maintained.
Study of dissolved gases in river waters of Azerbaijan
Authors: Abduev Magamed , Gumbatova Shafiga
Published: December 2023

Gases dissolved in river water were identified from data for 1980-2021. The long-term average amount of dissolved gases in river waters was calculated. It was found that there is more detailed information on 3 gases (oxygen (O2), carbon 4-oxide (CO2) and hydrogen (H2)) dissolved in the river waters of Azerbaijan. Based on the relationship established between the dissolved gases and the values of the mean long-term water temperature, the amount of dissolved gases in the river waters of Azerbaijan was determined.
Stages of sustainable ESG development of SMART cluster ecosystems
Authors: Babkin Alexandr , Shkarupeta Elena , Mikhailov Pavel , Karimov Dier
Published: December 2023

One of the largest manifestations of the development of modern forms of interaction between organizations are industrial clusters, within which the state, industrial and scientific sectors unite. However, technology does not stand still – that is why digital technologies are actively being introduced into all spheres of our life. At the same time, industrial clusters are transformed into more developed forms of cluster-type ecosystems, including in various energy systems. Such changes are necessary for the successful conduct of business, because enterprises must be flexible and be ready to make changes to maintain their competitiveness in the market. Moreover, these changes are currently very relevant in terms of the application of the ESG development concept by enterprises. One of the tools for this is digital transformation, which ensures the formation of SMART cluster ecosystems. SMART cluster ecosystems in the energy sector are based on the introduction and development of digital platforms within which an enterprise can optimize certain business processes or completely transform them, depending on its goals, needs and resources. In the course of the study, the concepts of digital transformation and digital enterprise platforms, their advantages, stages of sustainable ESG development of SMART cluster ecosystems are considered. The topical issue of cluster-type ecosystems as a further stage of development of industrial clusters, their main advantages and limitations is considered. Models of digital transformation have been formed depending on the complexity and scale of the changes being carried out.
Study of the influence of the output surface of the confusor inside the adapter on the location of fibers in the yarn in a rotor-spinning machine
Authors: Korabayev Sherzod , Bobojanov Husanhon , Soloxiddinov Jakhongir , Sadikov Muhammad , Yusupov Alijon , Mirzaboev Jamoliddin
Published: December 2023

In the article, the influence of the confusor inside the adapter on the output surface of the rotor-spinning machine on the location of the fibers in the yarn was studied. The properties of carding sliver for yarn production were investigated. In the experimental work, the uniformity and stability of the velocity field of each channel for moving fibers in an aerodynamic device were checked. Airflow was carried out at a speed of 20 m/s. During the research, 20-tex yarns were produced in 3 different samples by changing the output surfaces of the confusor inside the adapter S1=19.6 mm2, S2=12.6 mm2, S3=7.1 mm2 in the rotor-spinning machine. The cross-section and length of the produced yarns were examined under a microscope. The location of the fibers in the conical channel in the yarn was studied.
Development of mobile lidar for remote sensing of tropospheric ozone on the vertical and horizontal (slant) paths
Authors: Nevzorov Alexey , Romanovskii Oleg , Nevzorov Aleksey
Published: December 2023

We present a mobile lidar for measuring, in the ultraviolet (UV) region of the spectrum, the spatial distribution of ozone (O3) in the troposphere on the vertical and horizontal (slant) sensing paths, using the four-channel system of recording the return signals. The lidar operates, based on the lidar differential absorption and scattering method on the wavelength pair of 299 nm and 341 nm. We present a technical description of the lidar developed.