Cyclic Nature Research Articles

The Continuous Existence of Leaders and the Cyclical Nature of Leadership Change: A View from Present-Day Nigerian Society

The Continuous Existence of Leaders and the Cyclical Nature of Leadership Change: A View from Present-Day Nigerian Society

Voice: A Useful Concept for Researching Backlash and Feminist Counter-Actions?

Voice is central to claims-making and contestations around gender equality. This article engages with a diverse set of literature, social and feminist movement theory, and gender and development scholarship, to foreground voice in the analysis of the discursive strategies of backlash actors and the counter‑actions by feminist coalitions. Drawing on rich discussions with feminist academic-activists based in the global South and the UK, the article unpacks the various conceptual and methodological challenges that emerge in researching feminist collective voice in countering backlash, particularly on matters such as intersectionality and building collective feminist voice; intra-movement backlash and fragmentation of voice; capturing subtler forms of expressions of agency; and the cyclical nature of backlash.

MAIN ASPECTS OF THE TRANSFORMATION OF WORLD TRADE REGIMES AT THE PRESENT STAGE

The article is devoted to the analysis of key aspects of the transformation of world trade regimes at the current stage, such as digital commerce, regional trade agreements, protectionism, trade exchange of services, global supply chains and protection of innovative technologies for international economic stability. It is proved that the study of modern trends and transformations of the world economy is an actual theoretical and applied task, which involves the systematic consolidation of methods and mechanisms of interdisciplinary research. Important factor in modern conditions of globalization of trade relations is the use of information technologies, they become the determining factors of victory in the competitive struggle, it allows you to break traditional supply chains and move to the future. Implementation of digital technologies contributes to significant improvement of business results and significantly accelerates strategic changes in the development of world trade. It is summarized that until recently globalization processes were characterized as stable, mostly positive. But at the current stage, it became clear that the processes of transformation are linear in nature and largely depend on the geopolitical situation in the world, the cyclical nature of global economic development, the geographical location and structure of the economy of the countries of the world. The transformation of the management trade balance changes the form and content of world trade regimes .Accordingly, predicting the future, we understand that we cannot give even approximate calculations or make a more or less accurate analysis. The economic interdependence of different countries should be a guarantee of financial success, but in recent decades it has increasingly transformed and turned into something unusual in world trade. The main focus is on the discussion of forecasts for the current year 2024 of international organizations such as the World Trade Organization (WTO) and the World Trade Organization (WTO), which play a key role in regulating trade relations at this stage.

GLOBAL DEVELOPMENT AND SUSTAINABILITY OF LITHIUM-ION BATTERIES IN ELECTRIC VEHICLES

The aim of this review was to provide a comprehensive assessment of the global development and sustainability of lithium-ion batteries (LIBs) for electric vehicles. Production of various renewable energy sources has proven to be sustainable; however, with certain types of renewable energy sources, due to the cyclical nature of natural resources, energy production is not constant, and energy production needs to be more balanced with consumption needs. In the future, this problem could be alleviated if global energy storage capacity were improved and expanded. Today, batteries are an important but underutilized energy source for electric cars. LIBs have a long history behind them and currently play the most crucial role in the electric car industry. LIBs are primarily characterized by high energy and power density, which makes them incomparably competitive for use in electric cars. The research presents and processes in detail segments related to the development, principle of operation, and sustainability of LIBs, as well as the global manufacturing capacity of LIBs for electric vehicles.

Motilin fluctuations in healthy volunteers determined by liquid chromatography mass spectrometry.

Motilin is a hormone secreted by specialised enteroendocrine cells in the small intestine, and is known to modulate gastrointestinal motility in humans, regulating the migratory motor complex. It is understudied at least in part due to the lack of commercially available immunoassays. A multiplexed liquid chromatography mass spectrometry (LC-MS/MS) method was optimised to measure motilin, insulin, C-peptide, GIP (1-42) and GIP (3-42). Corresponding active ghrelin concentrations were determined by immunoassay. Ten healthy volunteers with no prior history of gastroenterological or endocrine condition attended after overnight fast and had blood samples taken every 15 minutes for 4 hours whilst continuing to fast, and then further sampling for 2 hours following a liquid mixed meal. Hunger scores were taken at each time point using a visual analogue scale. Normal bowel habit was confirmed by 1 week stool diary. Motilin levels fluctuated in the fasting state with an average period between peaks of 109.5 mins (SD:30.0), but with no evidence of a relationship with either ghrelin levels or hunger scores. The mixed meal interrupted cyclical motilin fluctuations, increased concentrations of motilin, insulin, C-peptide, GIP(1-42) and GIP(3-42), and suppressed ghrelin levels. This study highlights the utility of LC-MS/MS for parallel measurement of motilin alongside other peptide hormones, and supports previous reports of the cyclical nature of motilin levels in the fasting state and interruption with feeding. This analytical method has utility for further clinical studies into motilin and gut hormone physiology in human volunteers.

Третий Ренессанс или Новое Средневековье? Русский Серебряный век о Возрождении

The article is a historiographical and theoretical review of the views of representatives of Russian religious and philosophical thought of the late 19 — early 20 centuries on the topic of the Western European Renaissance. The article analyzes the history of the concept of “Renaissance” since its introduction into scientific use by Jules Michelet (1855) and Jacob Burckhardt (1860). The Russian intelligentsia took this term in the interpretation of Friedrich Nietzsche, who contrasted the individualism and aristocracy of the Renaissance with the egalitarianism and philistinism of modernity. The Nietzschean concept of the Renaissance by Dmitry Merezhkovsky, who sought a solution to the great contradiction between paganism and Christianity and expected a Third Renaissance, is contrasted with the constructions of Akim Volynsky, who interpreted the Renaissance not as a revival of classical beauty and the emancipation of the creative forces of the individual, but as an anti-Christian, demonic movement, the restoration of dark pagan principles. The peculiar interpretations of the Renaissance and related concepts of the Third Renaissance by Thaddeus Zelinsky and Vyacheslav Ivanov are considered. The author emphasizes that enthusiasts of the Third Renaissance interpret the concept of “Renaissance” broadly — not only as the restoration of ancient ideals, but also as the renewal of culture in general, the path to a new state of culture and society. Hence the idea of the multiplicity of “rebirths” in history, associated with the idea of the cyclical nature of the historical process. It is noted that at the beginning of the 20 century, the attitude to the Renaissance in Russian philosophy is being rethought, the roots of the deepening crisis of modern society are found in it. The Renaissance is criticized as a phenomenon responsible for the desiccation and atomization of Western culture. The most consistent critics of the worldview of the Renaissance type were Nikolai Berdyaev and Pavel Florensky, who announced the imminent end of the Renaissance world, built on the principles of humanism and individualism, and the advent of the New Middle Ages.

Modeling uncertainties associated with multi-attribute decision-making based evaluation of cooling system using interval-valued complex intuitionistic fuzzy hypersoft settings

<abstract><p>Academics encounter a challenge regulating data-driven unpredictability in numerous complicated decision scenarios. Regulating the cyclical nature of appraisal attributes, determining lower and higher limitations, granting multi-parametric values as a means of assessing argumentation, and modeling uncertainty are a few examples of these problems. It requires the incorporation of complex plane settings, interval-valued intuitionistic fuzzy settings, and hypersoft settings. Inspired by these kinds of scenarios, the goal of this research was to articulate a new theoretical framework, the interval-valued complex intuitionistic fuzzy hypersoft set ($ \Gamma $-set), which can handle these kinds of problems as a whole under the umbrella of a single framework. First, the concepts of $ \Gamma $-set, as well as its set operations and aggregations, such as decision matrix, cardinal matrix, aggregate matrix, and cardinality set, were examined. The second phase offers an appealing algorithm that consists of nine steps that go from taking into account necessary set construction to making the best choice. A prototype case study analyzing eighteen evaluation qualities and thirty-four sub-attributes for determining an optimal cooling system ($ \mathbb{CSYS}) $ for a factory validates the provided algorithm. Informative comparison analysis and preferred study features were provided as essential components of research to assist academics in making significant advances regarding their field and gradually, but thoroughly, advancing their specialization.</p></abstract>

ВПЛИВ КРИЗ НА ФУНКЦІОНУВАННЯ СВІТОВОГО РИНКУ АВІАЦІЙНИХ ПЕРЕВЕЗЕНЬ

Taking into account the cyclical nature of the world economy development, the identification and analysis of crisis phenomena that arise in the world economic system acquires special importance. At the same time, taking into account that air transport is one of the drivers of social and economic growth, it is necessary to determine the interrelationships and factors of the impact of crises on various aspects of the world air transportation market functioning. The analysis of modern risks and threats is a step towards understanding and developing strategies aimed at maintaining a high level of safety and stability of the air transport sector in conditions of constant change. The purpose of the article is to study the impact of global economic crises on the air transport sector, to identify and substantiate modern risks and threats to the functioning of the global air transport market. The interdependence of the development of the world economy and the air transport system is explored in the article; it was established that the biggest crisis shocks in world aviation are cyclical in nature. The largest economic crises and their consequences for the air transport sector are analyzed. Current key risks and threats to the global air transport market are substantiated: the return of the coronavirus or its mutation, geopolitical instability, reformatting of supply chains, a slowdown in demand for air travel as a result of the global recession, a change in society's eco-consciousness, and others. Scientific theories of economic cycles and crises form the methodological basis of the research; both general scientific and special methods of scientific knowledge were used – historical-logical, descriptive-analytical, analysis and synthesis, methods of quantitative and qualitative comparisons. The informational basis of the article is monographic studies and periodical publications of domestic and foreign economists, analytical reports of international organizations, international consulting companies and analytical centers. Research results can be used for scientific justification and further creation of proper conditions for effective management of the global air transport system, while developing new strategies that will allow the aviation sector to remain stable and competitive in conditions of uncertainty and growing threats.

ЦИКЛИЧНОСТЬ ЭКОНОМИЧЕСКОЙ ДИНАМИКИ

Cyclical dynamics is a universal form of movement of nature, society and the economy. The specificity of economic dynamics is that it has a more probabilistic character than, for example, natural cycles. It is important to take this fact into account in the process of forecasting economic development. In the modern economy, forecasting plays an essential role, which is due to the practical significance of forecasts. The cyclical type of oscillation is characterized by repeated periods of decline and rise. The uneven development of the economy, reflected in the distribution of dynamic series of statistical data characterizing the results of economic activity for various types of fluctuations in economic dynamics, is a basic condition for the development of management technologies on a state and economic scale. However, in the practice of public administration of national economic complexes and the national economy as a whole, the economic unevenness of economic development is often ignored. The cyclical nature of economic dynamics and the onset of the crisis are determined by the trends in the development of production and the economy as a whole, the state of socio-economic relations, the content and nature of public life. The imbalance of the economic interests of the state and private capital, economic and political elites and citizens can lead to crises in the economy. The peculiarity of cyclicity in the agricultural sector of the Russian economy, the nature and duration of the crisis determine the need for the use of non-standard methods of crisis management, which is facilitated by a comprehensive study of existing problems, the causes of downward trends in economic dynamics and the effectiveness of priority areas of industry development. The latest financial and economic crisis of the world economy, which affected Russia and the most vulnerable sphere of its economy - the agricultural sector, showed that the process of achieving sustainable agricultural development is long and requires effective use of state support measures and various elements of anti–crisis management, the development of tools for diagnosing and forecasting crisis phenomena, the formation of programs for the soft passage of agriculture downward trajectory of the economic cycle. The article discusses the theoretical foundations of the cyclical nature of economic dynamics.

A Kinematic Model to Predict a Continuous Range of Human-Like Walking Speed Transitions.

While constant speed gait is well understood, far less is known about how humans change walking speed. It is also unknown if the transition steps smoothly morph between speeds, or if they are unique. Using data from a prior study in which subjects transitioned between five speeds while walking on a treadmill, joint kinematic data were decomposed into trend and periodic components. The trend captured the time-varying nature of the gait, and the periodic component captured the cyclic nature of a stride. The start and end of the transition were found by detecting where the trend diverged from a ±2 standard deviation band around the mean of the pre- and post-transition trend. On average, the transition started within half a step of when the treadmill changed speed ( p << 0.001 for equivalence test). The transition length was 2 to 3 steps long. A predictive kinematic model was fit to the experimental data using Bezier polynomials for the trend and Fourier series for the periodic component. The model was fit using 1) only constant speed walking, 2) only speed transition steps, and 3) a random sample of five step types and then validated using the complement of the training data. Regardless of the training set, the model accurately predicted untrained gaits (normalized RMSE , normalized maximum error generally ). Because the errors were similar for all training sets, this implies that joint kinematics smoothly morph between gaits when humans change speed.

Construction of elastic fields in the problem from the action of body forces of a cyclic nature

Construction of elastic fields in the problem from the action of body forces of a cyclic nature

Развитие проблематики отечественной экономической психологии в научном творчестве А.Л. Журавлева

&lt;p style="text-align: justify;"&gt;&lt;strong&gt;Objective&lt;/strong&gt;. The purpose of this article is to analyze the spectrum of issues developing by the academician of the Russian Academy of Sciences and of the Russian Academy of Education A.L. Zhuravlev himself and to consider the questions elaborating under his guidance &amp;ndash; with his co-workers and students in different periods of his scientific work; the research was conducted from the perspective of analyzing the processes of formation and development of the domestic economic psychology problem field. &lt;br&gt;&lt;strong&gt;Background&lt;/strong&gt;. The existing rules of development of socio-economic systems, in particular their cyclical nature (alternation of stable and crisis periods, uneven changes in the system), indicate the actuality of historical and psychological research in the field of economic psychology in order to predict economic, psychological and socio-psychological dynamics in changing geopolitical and socio-economic conditions of society. &lt;br&gt;&lt;strong&gt;Results. &lt;/strong&gt;Changes in the management of country&amp;rsquo;s economic life in the 80s of the last century, the subsequent economic transformations in society, crises and global processes in the world economy are considered as social factors that actualize the research of socio-psychological and economic-psychological phenomena in the scientific work of A.L. Zhuravlev. Among them are: psychological readiness of the population for cardinal economic changes, the relationship of socio-psychological and economic dynamics, patterns and mechanisms of economic socialization and economic self-determination, psychological resources of economic development of society and other phenomena. &lt;br&gt;&lt;strong&gt;Conclusions. &lt;/strong&gt;Three main stages in the development of the issues of domestic economic psychology presented in the scientific work of A.L. Zhuravlev was reveled. The connection of the studied economic-psychological and socio-psychological phenomena with the socio-economic dynamics of public life is shown.&lt;/p&gt;

Patterns of runoff fluctuations of the Dniester River (Ukraine) under conditions of climate change at the beginning of the 21st century

The relevance of the chosen topic is associated with the impact of climate change on fluctuations of water content in Ukrainian rivers. The consequences of warming depend on physical and geographical conditions and vary significantly across different natural zones. The behaviour of catchment areas affected by climate change varies depending on landscape (mountainous or flat terrain) and latitude. This results in instability of boundaries of catchment areas with annual runoff synchronous and out-of-phase fluctuations. The study aims at establishing the patterns of annual runoff fluctuations in the Dniester basin with relation to fluctuations in the maximum runoff of rainfalls and spring floods. The spring floods are the ones that determine a significant part of annual runoff and depend on the impact of warming during the winter season. The study's main method is the method of constructing difference integral curves of annual and maximum rainfalls and maximum spring runoff and their analysis. There are 7 groups (zones) within the Dniester River catchment area identified by the type of difference integral curves of annual runoff. Fluctuations in annual, maximum rain and spring runoff were compared using the curves averaged within each group. The degree of synchronicity of fluctuations was estimated via correlation coefficients between the ordinates of difference integral curves. It was found that the main river oscillations retain their cyclicity along its entire length, even below the Dniester HPP. The last transition to a low-water phase occurred in 2010-2011. It was discovered that the main river's cyclical nature mostly results from fluctuations in the runoff of mountainous Carpathian tributaries that form the Dniester's runoff formation zone. This part of the catchment area is characterized by a high amount of snow and rainfalls feeding the river with the role of rainfalls having a predominant character. In the upper reaches of Carpathian rivers, where the impact of warming is not yet sufficiently pronounced at high altitudes, spring floods play a significant role in runoff formation. In the upper reaches of Carpathian rivers there is an additional zone where fluctuations in annual runoff are caused by both rainfalls and spring floods. The boundaries of this zone (2nd district) may change as the effects of warming increase high in the mountains. On the left-bank tributaries, the runoff fluctuations in Verkhnepodilskyi and Serednepodilskyi districts are similar to those of the main river, however, there is a shift in the dates of the last transition to a low-water phase. The study indicates the likelihood of karst and artificial reservoirs influence. It also indicates a significant difference in the nature of runoff fluctuations of the upper left-bank tributaries (Strvyazh, Vereshchytsia, Shcherek) and lower left-bank tributaries. They are affected by other atmospheric processes and climatic factors associated with such processes.

Changes in the fauna and distribution of birds of the forest-steppe Trans-Urals in the late XX – early XXI centuries under the influence of natural and anthropogenic factors

The distribution of birds in the West Siberian plain in the western part of the forest-steppe zone (bound east by River Ishim) is very dynamic. Just since the beginning of this century, 16 new breeding species and one possibly breeding species have been discovered in this region. Most of them (76%) are representatives of the Tropical group (5 species) dispersing from the south, as well as the Nomadic (5) and the European (3) types of fauna coming from the south and the west; 3 species belong to the Chinese type of fauna and one – to the Siberian type. Another new species from the Tropical group was recorded as breeding in the last decade of the previous century. The distribution ranges of all 6 representatives of the Tropical group and 2 species of the Nomadic fauna associated with aquatic habitats have expanded northward most over the past 40 years (for 500–600 km). A powerful wave of their dispersal in forest-steppe occurred during the years of maximum filling of water reservoirs in the early 2000s. At the same time, despite the cyclical dynamics of the water level, cyclical processes in the changes of the distribution of limnophile birds are not expressed (analysis of century-long faunal lists shows the cyclical nature of the distribution of no more than 2–3 such species). It is assumed that against the background of intense climate warming most bird species, primarily limnophiles, are not simply redistributing individuals within the ranges, but are expanding their ranges northward, and that expansion will continue in the future. The anthropogenic impact on the regional avifauna is mainly caused by the consequences of the economic crisis in agriculture. In the recent decades, it has been much less obvious than the natural impact.

Bicrystallography-informed Frenkel–Kontorova model for interlayer dislocations in strained 2D heterostructures

In recent years, van der Waals (vdW) heterostructures and homostructures, which consist of stacks of two-dimensional (2D) materials, have risen to prominence due to their association with exotic quantum phenomena originating from correlated electronic states harbored by them. Atomistic scale relaxation effects play an extremely important role in the electronic scale quantum physics of these systems, providing means of manipulation of these materials and allowing them to be tailored for emergent technologies. We investigate such structural relaxation effects in this work using atomistic and mesoscale models, within the context of twisted bilayer graphene — a well-known heterostructure system that features moiré patterns arising from the lattices of the two graphene layers. For small twist angles, atomic relaxation effects in this system are associated with the natural emergence of interface dislocations or strain solitons, which result from the cyclic nature of the generalized stacking fault energy (GSFE), that measures the interface energy based on the relative movement of the two layers. In this work, we first demonstrate using atomistic simulations that atomic reconstruction in bilayer graphene under a large twist also results from interface dislocations, although the Burgers vectors of such dislocations are considerably smaller than those observed in small-twist systems. To reveal the translational invariance of the heterointerface responsible for the formation of such dislocations, we derive the translational symmetry of the GSFE of a 2D heterostructure using the notions of coincident site lattices (CSLs) and displacement shift complete lattices (DSCLs). The workhorse for this exercise is a recently developed Smith normal form bicrystallography framework. Next, we construct a bicrystallography-informed and frame-invariant Frenkel–Kontorova model, which can predict the formation of strain solitons in arbitrary 2D heterostructures, and apply it to study a heterostrained, large-twist bilayer graphene system. Our mesoscale model is found to produce results consistent with atomistic simulations. We anticipate that the model will be invaluable in predicting structural relaxation and for providing insights into various heterostructure systems, especially in cases where the fundamental unit cell is large and therefore, atomistic simulations are computationally expensive.

Сomputational approach to thermal-stressed state modeling of tire based on the algorithm of its self-heating analysis. Part 2 – Practical results of applying the approach

Elastomers and their composites are widely used in modern innovative technology: for the production of aviation and automobile tires, anti-vibration elements (rubber, rubber-metal springs), dampers, elastomeric bearings. Also they are used in shaft suspensions, as spacers between structural parts, supporting parts and fasteners. Elastomeric elements of structures have a high dynamic load, in particular of a cyclic nature, which is accompanied by the formation of hysteresis loops and, as a result, the occurrence of the phenomenon of self-heating. An increase in temperature in the middle of materials causes significant changes in their mechanical properties, reduces strength characteristics, accelerates aging and degradation processes, and has a significant impact on fatigue processes. In addition, an increase in temperature causes an additional thermal stress state, capable of significantly changing the qualitative picture of the structure's deformation characteristics' distribution. Thus, the purpose of this study is development of approach to assessing the thermal stress state of structures made of elastomeric materials for the possibility of further analysis of its influence on the structure work as a whole. The appropriate approach was built on the basis of numerical modeling of thermal and deformation processes which takes place into the structure during operation. The proposed approach includes several related calculations by using FEM and is based on the fundamental approaches of the theories of elasticity and viscoelasticity, thermal conductivity and thermo-elasticity. Thus, the article presents an approach to the analysis of the thermal stress state of structural elements under operating conditions. This approach was applied to determine the thermo-strain-stress characteristics of a pneumatic tire and corresponding pictures of its distribution were obtained.

Effects of Episodic Food Insecurity on Psychological and Physiological Responses in African American Women With Obesity (RESPONSES): Protocol for a Longitudinal Observational Cohort Study.

Food insecurity is a risk factor for multiple chronic diseases, including obesity. Importantly, both food insecurity and obesity are more prevalent in African American women than in other groups. Furthermore, food insecurity is considered a cyclic phenomenon, with episodes of food adequacy (ie, enough food to eat) and food shortage (ie, not enough food to eat). More research is needed to better understand why food insecurity is linked to obesity, including acknowledging the episodic nature of food insecurity as a stressor and identifying underlying mechanisms. The objective of this study is to investigate the episodic nature of food insecurity as a stressor via responses in body weight and psychological and physiological parameters longitudinally and do so in a health-disparate population-African American women. We enrolled 60 African American women (food-insecure cohort: n=30, 50%; food-secure cohort: n=30, 50%) aged 18-65 years with obesity (BMI 30-50 kg/m2) to measure (1) daily body weight remotely over 22 weeks and (2) psychological and physiological parameters via clinic assessments at the beginning and end of the 22-week study. Furthermore, we are assessing episodes of food insecurity, stress, hedonic eating, and appetite on a weekly basis. We hypothesize that food-insecure African American women with obesity will demonstrate increased body weight and changes in psychological and physiological end points, whereas food-secure African American women with obesity will not. We are also examining associations between changes in psychological and physiological parameters and changes in body weight and performing a mediation analysis on the psychological parameters assessed at the study midpoint. Psychological questionnaires are used to assess stress; executive function, decision-making, and motivation; and affect and nonhomeostatic eating. Physiological measurements are used to evaluate the levels of cortisol, dehydroepiandrosterone-sulfate (DHEA-S), C-reactive protein, thyroid hormones, blood glucose, glycated hemoglobin, and insulin, as well as allostatic load. This study has completed participant recruitment (n=60). At the time of study enrollment, the mean age of the participants was almost 47 (SD 10.8) years, and they had a mean BMI of 39.6 (SD 5.31) kg/m2. All data are anticipated to be collected by the end of 2023. We believe that this is the first study to examine changes in body weight and psychological and physiological factors in food-insecure African American women with obesity. This study has significant public health implications because it addresses the cyclic nature of food insecurity to identify underlying mechanisms that can be targeted to mitigate the adverse relationship between food insecurity and obesity and reduce health disparities in minority populations. ClinicalTrials.gov NCT05076487; https://clinicaltrials.gov/study/NCT05076487. DERR1-10.2196/52193.

Genomic characterization of Bordetella pertussis in South Africa, 2015-2019.

Pertussis remains a public health concern in South Africa, with an increase in reported cases and outbreaks in recent years. Whole genome sequencing was performed on 32 Bordetella pertussis isolates sourced from three different surveillance programmes in South Africa between 2015 and 2019. Genome sequences were characterized using multilocus sequence typing, vaccine antigen genes (ptxP, ptxA, ptxB, prn and fimH) and overall genome structure. All isolates were sequence type 2 and harboured the pertussis toxin promoter allele ptxP3. The dominant genotype was ptxP3-ptxA1-ptxB2-prn2-fimH2 (31/32, 96.9 %), with no pertactin-deficient or other mutations in vaccine antigen genes identified. Amongst 21 isolates yielding closed genome assemblies, eight distinct genome structures were detected, with 61.9 % (13/21) of the isolates exhibiting three predominant structures. Increases in case numbers are probably not due to evolutionary changes in the genome but possibly due to other factors such as the cyclical nature of B. pertussis disease, waning immunity due to the use of acellular vaccines and/or population immunity gaps.

Измерение уровня устойчивости технологического развития производственных систем (на примере промышленности североарктических регионов)

Sustainable development stands as the principal paradigm for global economic progress in the 21st century. However, the challenge of measuring the sustainability of economic systems across various types and levels persists. This study introduces a novel methodological approach to assessing the sustainability levels of production systems. The objective is to substantiate a method for quantifying the sustainability of production systems. Building upon a previously devised graphical model depicting the life cycle of technological development in production, the proposed method involves scoring the sustainability of production systems at different hierarchy levels (manufacturers, industries, production types). The resulting sustainability index enables making comparisons across different periods and entities. Practical implementation of the proposed method is demonstrated through a twelve-year analysis of three major companies operating in the North and the Arctic (Alrosa, Novatek, and Norilsk Nickel) and the Kola Mining and Metallurgical Company, a subsidiary of Norilsk Nickel. Additionally, a fifteen-year analysis of industrial production by type in four Russian Arctic regions is presented. Calculations reveal a generally low level of sustainability across all analyzed entities. The study identifies the cyclical nature of technological development in manufacturing enterprises as a significant influence on sustainability levels. Accounting for this factor in sustainability assessments will equip authorities and corporate managers in the Arctic regions to make more informed strategic decisions.

Особливості трансформаційних процесів на світовому ринку морської торгівлі

The benefits of sustainable functioning are among the most important characteristics of any socio-economic structure. It predetermines the rationality of the formation of results at normalized costs. But sustainability is of particular importance to systems that predetermine the optimization of the state of other participants in market relations. In this aspect, the activities of maritime transport are particularly highlighted, ensuring the rationality of the international division of labor. All subsystems that form cargo flows are interested in the sustainable operation of maritime transport, which provides up to 80 percent of foreign trade. However, the periodic instability of the world merchant fleet is determined by three aspects: the cyclical nature of the world economy, the competitive situation within the global maritime trade market and alternative approaches of opposing economic strategies. Therefore, to achieve transport security and sustainable positioning of national or union economies, it is important to monitor and recognize unwanted crisis situations. In accordance with the characteristics of external influences, response strategies are selected to meet the requirements of ensuring sustainability. Therefore, a specific approach to ensuring risk management is being formed.