Individual Sectors Research Articles

Impact of random geometric errors in an elliptical superconducting magnet with application to a compact heavy-ion synchrotron

A compact heavy-ion synchrotron is under development for next-generation cancer therapy. A superconducting magnet is designed with a main dipole field of 3.5 T and a field error less than 5 × 10−4 to maintain compactness. The coil is wound directly with monolithic Nb-Ti wire on a curved elliptical mandrel, comprising 22 laminated layers to achieve the desired magnetic field. Given the critical need for field quality, it is imperative to determine the tolerance of coil fabrication and to devise a method to eliminate field error during the design stage. This paper presents a numerical investigation of possible random geometric errors stemming from fabrication and assembly tolerances in a curved elliptical superconducting magnet. We first provide an analytical formulation derived in a complex plane to estimate the field error of a straight elliptical coil. We then conduct a Monte Carlo simulation to assess cases involving misalignment of individual wires and coil block sectors. Additionally, we compare simulation results with field measurements obtained from a short model magnet tested previously to predict potential random errors in manufacturing. Finally, we calculate the beam dynamic aperture to assess the effects of random geometric errors on beam loss using Monte Carlo simulation results. This method enables the prediction of tolerances for fabricating high-quality high-field magnets and aids in making design decisions concerning the utilization of active shim coils.

Factors affecting the performance of government R&D support programs in pharmaceutical enterprises

Purpose The government support for research and development (R&D) initiatives in the pharmaceutical sector has been declining. The purpose of this study is to analyze factors influencing the efficacy of government R&D support programs directed at pharmaceutical enterprises in South Korea, aiming to provide valuable insights for policymakers responsible for resource allocation in the pharmaceutical industry. Design/methodology/approach The study uses data from 490 R&D projects conducted by 106 pharmaceutical enterprises between 2018 and 2020, sourced from the National Technical Information Service and Drug Approval Research and Technology repositories. The data were analyzed using negative binomial regression analysis operated by the Statistical Package for the Social Sciences. Findings Applied research, cooperative research and the number of doctoral researchers positively impact both the quantitative and qualitative performance of the papers. The number of doctoral researchers, government research funds and the ratio of private investment to total R&D investment positively impacted the quantitative and qualitative performance of patents. However, enterprise age negatively affected patent performance. Notably, sales were significantly associated with patent qualitative performance but not with patent quantitative performance. Originality/value While previous studies have primarily focused on specific types of government R&D support or individual sectors, this study provides a broader perspective by incorporating a variety of variables, to examine the overall performance of government R&D programs in the pharmaceutical sector. This paper addresses the growing concern over declining government support and offers insights that were not fully explored in prior studies. By doing so, this research highlights the importance of understanding how diverse factors collectively influence the effectiveness of government R&D support, providing new directions for innovation and excellence in the pharmaceutical industry.

ESG performance variability: profitability and market implications for real estate entities in a worldwide context

PurposeThe central aim of this study is to examine the relationship between ESG metrics and financial outcomes in the real estate industry, honing in on particular sectors and geographical areas. Utilizing ESG ratings and pillar scores as indicators of sustainability performance, this research endeavors to discern their effects on measures of profitability and market performance.Design/methodology/approachDrawing on a dataset encompassing more than 200 publicly listed companies in the real estate sector, this research utilizes a fixed effects regression model and instrumental variables to scrutinize the data. This approach enables a thorough evaluation of how governance, environmental and social dimensions influence the financial and market outcomes of these entities.FindingsThe research reveals a complex relationship between ESG factors and financial performance, defying any simplistic, universal application. The connection is marked by diversity, deeply influenced by the unique aspects of each real estate industry segment and the particularities of regional markets. Specifically, the environmental aspect often corresponds with an increase in ROA, yet this pattern is not consistent throughout all cases. On the other hand, the social aspect is frequently associated with diminished performance indicators, while the influence of governance factors varies, affecting financial outcomes less predictably.Originality/valueWith its pioneering methodology, the research delves into the granular impacts of ESG factors within individual real estate sectors and specific countries. Insights into the Real Estate Rental, Development and Operations sector as well as firms operating in Oceania, extend the conversation in an area of ESG literature that has been relatively uncharted. Moreover, the study’s illumination of how environmental, social and governance elements distinctly influence financial results injects fresh viewpoints into the ongoing dialogue on sustainable business practices.

Policy coherence for ecosystem-based management: Implementing EU water and marine policies in the Archipelago Sea

The European Union (EU) Water Framework Directive (WFD) and Marine Strategic Framework Directive (MSFD) call for member states to achieve the good environmental status of coastal waters and marine areas and to create ecosystem-based management plans that cover individual sectors. The Baltic Marine Environment Protection Commission (HELCOM) has listed the Archipelago Sea as an environmental hotspot in the Baltic Sea due to its vulnerability to the impacts of eutrophication. Agricultural runoff is the main source of excess nutrient loading, although aquaculture, tourism, wastewater treatment and internal loading also contribute. In this paper, we focus on the horizontal and vertical policy coherence in the Archipelago Sea region. The research data consist of policy documents and 11 thematic interviews. This paper aims to reveal how European water and marine policies are implemented in the Archipelago Sea and to identify the synergies and coherence challenges exist between policy sectors of agriculture, aquaculture and offshore wind. Evidence from the Archipelago Sea case study shows that a lack of coherence between sectoral policies can create challenges for ecosystem-based management. Moreover, the coherence and synergies in implementing regional and EU marine policy frameworks at the national and local levels can guide sectoral decisions towards strengthening of marine resilience and biodiversity.

Agri-Food Sector in Ukraine and Poland: A Comparative Analysis Using the Input–Output Model

The war in Ukraine and the COVID-19 pandemic have shown that Ukraine is strongly integrated with global agricultural markets, is of great importance for the world’s food security, and can effectively compete with Poland in exporting to EU markets. Contrary to Poland, the agri-food sector in Ukraine has not yet been the subject of research using input–output tables. The input–output model has many advantages in studying the structures of individual sectors and their connections with other sectors of the economy and with foreign countries. Therefore, the current study fills the existing research gap. The aim of the article is a comparative analysis of the agri-food sectors in Ukraine and Poland in 2020 (during the COVID-19 pandemic) using the input–output model. The data source is the OECD TiVA database. The main conclusion is that Poland is further along the path of agricultural and food sector development than Ukraine. The study also reveals that in terms of value, the agri-food sector in Ukraine is significantly smaller than in Poland, but it is more important in the Ukrainian economy, with agriculture being its dominant link, while in Poland it is the food industry. The Polish agri-food sector is characterized by a higher import dependency of gross output. Exports play a significant role in the distribution of the gross output of Ukraine’s agriculture and Poland’s food industry. However, the export directions differed significantly. Poland exported mainly to the EU, while Ukraine exported to Asian and Middle Eastern countries.

Der Standort Österreich aus Sicht der ökonomischen Komplexität

Abstract Economic complexity indicators attempt to map latent factors for long-term growth. In this analysis, we shed light on Austria as a business location using multidimensional complexity indicators that allow statements to be made about regional specialization, key technologies for the green transition and individual sectors such as the semiconductor industry. Austria usually occupies top international positions or is at least among the leaders, and this has remained stable over the last 20 years. This implies extensive opportunities for diversification into promising technologies. For individual brown industries, however, there is a risk of getting locked into products whose demand will decline in the course of the green transition.

Progress made in digitalizing antimicrobial resistance surveillance in a One Health approach in Kenya.

Antimicrobial resistance (AMR) is a major threat to global public health, affecting human and animal health, agriculture, food safety, and the environment. The control of AMR is often challenging, particularly when data are scanty or siloed in individual sectors. To develop evidence-based control policies for AMR, an electronic information system that integrates AMR data from various sectors, in a One Health approach, is critical. Acknowledging the interconnectedness of AMR in humans, animals, and the environment and the need to assess the AMR burden using a One Health approach, Kenya's National Antimicrobial Stewardship Interagency Committee (NASIC), with support from FIND, integrated human and animal health AMR data at the national AMR data repository and developed the One Health AMR Surveillance System (OHAMRS). The OHAMRS comprises two core digital components: interoperability middleware for integrating data from various sources and a DHIS2 web portal for the analysis and visualization of AMR surveillance data from the human and animal health sectors. These components are scalable for future inclusion of data from other One Health sectors, e.g., the environment, food/feed, and aquaculture sectors. The OHAMRS has 42 dashboards that facilitate the presentation, interpretation, and dissemination of actionable information relating to AMR, including 17 dashboards for human and animal health priority pathogens and 8 for drug-resistance indicators. The priority pathogen dashboards provide visualization of antimicrobial susceptibility patterns, resistance and susceptibility trends, resistance tables, and geospatial susceptibility maps. Other dashboards include surveillance sites and specimen reports, data completeness, data reconciliation, sample testing workload, a One Health intersectoral dashboard, and other reporting tools for diverse stakeholders. Digitalizing AMR surveillance through a One Health lens is pivotal to understand AMR prevalence and patterns across various sectors. The OHAMRS provides comprehensive data analysis and presentation, informing policymaking on AMR control. Digital tools such as the OHAMRS are vital in facilitating the availability of data and actionable information on AMR required to address the AMR crisis in Kenya.

Конкурентоспособност на българския зеленчуков сектор на световния пазар

Depending on the scope of the concept of competitiveness, it is used in a variety of contexts in economic research, although there is a lack of a precise and generally accepted definition of what exactly it entails. In this study, competitiveness is considered from the point of view of market performance, using the developed theoretical framework for measuring the performance of an individual country or sector of the national economy, based on the definition of the Canadian Competitiveness Group: “The ability to sustainably win and maintain market share”. Two concepts are laid down in it – about the dynamics of market share and profit formation in order to achieve sustainable development over time. The aim of the present study is to evaluate the competitiveness of the Bulgarian vegetable production sector on the world market, to clearly note its change in a dynamic aspect. The research specifically adopted the methodology developed by B. Ivanov for calculating a composite index of competitiveness, containing two main components - production and value. The analysis shows the place of Bulgarian vegetable production in the national agriculture and in the world vegetable market, the dynamics and changes that reflect in the competitiveness of the sector during the years of EU membership – 2007 – 2021. The comprehensive assessment of the competitiveness of the vegetable crop sector in Bulgaria on world markets defines it as relatively low. The results obtained from the research confirm and complement the assessment of the competitiveness of the “Vegetable production” sector in Bulgaria, made by other Bulgarian researchers. Despite the favorable climate and natural features in our country, as well as our traditions in the production of vegetables, the sector is deteriorating its market position and the dynamics of competitiveness are rather negative. The research clearly shows that Bulgaria is losing positions in the production of vegetables, while at the same time its dependence on imports and foreign prices is increasing. The sector of vegetable production is among the vulnerable sectors of the Bulgarian agriculture, as the permanent negative trends of reduction of areas and production are projected in the inability to meet consumer needs in our country from high-quality domestic production. The future development of the sector and the increase of its competitiveness will depend on many factors, some of the most important of which are the extent to which vegetable producers will be able to be flexible and adapt to achieve the new environmental policy objectives; to what extent they will be able to respond to modern trends in agricultural production – digitalization, ecological/biological agriculture, new technological solutions.

Comparative Characteristics of the Areas of the Auricle Sectors in Young Men with Different Head Shapes

As reported in the scientific literature, data on the correlations between the shape and size of the auricle and other anatomical structures of the human body are very limited. There are no data on the relationship between the auricle and the shape of the head. The aim of the study was to determine the sizes of the auricle sectors and their correlations with the shape of the head. Material and methods. The study involved young men (n=401) aged 18-21 years. The shape of the head was determined by cephalometry. The right auricle was studied on digital images. The authors determined the area of individual sectors and their percentage ratio and analysed a linear correlation. The dynamics of the relationship between sectors in each group and between groups was studied in accordance with the shape of the head. Results. The sizes of the auricle sectors and their percentage ratio were detected. Correlation links between the sectors, the dynamics of the relationships between the sectors within one group and between the groups by head shape were revealed. Mobile and permanent sectors and dependence of their relative sizes on the head shape were identified. The relationship between the sizes of the sectors and the head shape was demonstrated. Conclusion. The areas of the auricle sectors increase from S1 to S4 regardless of the head shape. In the dolichocephalic group, all sizes have the largest absolute values, in mesocephalics - average, in brachycephalics - the smallest. The ratio of the S1 sector area to the area of other sectors are maximum in the dolichocephalic group. The ratios of the S2/S4 and S3/S4 sectors areas do not depend on the head shape and absolute values of the parameters, and are the same in all groups.

Ecological and faunistic features of fleas in the Transcaucasian mounthill natural plague foci in Azerbaijan

Among all vectors of natural focal infections, fleas are the most active. In this respect, entomological and epizootological monitoring has always been of great importance. This article, based on the material collected from the Transcaucasian foothill natural plague focus, presents the results of a study of flea species diversity, the landscape and geographical area of their distribution. The goal of this work was to determine the diversity of flea species, their distribution and abundance based on the results of epizootological studies conducted in areas with different landscapes in the Transcaucasian foothill natural plague focus of Azerbaijan. The material for the study was obtained during epizootological studies and observations conducted in the spring and autumn seasons of 2020–2023. in the Transcaucasian foothill natural plague focus of Azerbaijan (Bozchol, Mil-Mugan, Eastern and Western Jeyranchel, Gobustan, Absheron, semi-deserts of Kilazi, Sitalchay). Collection, packaging, transportation, and marketing of the material were carried out on the basis of relevant biosafety rules and delivered for further study to the Special Dangerous İnfections Control Center. In total, 61,087 nest tracks were examined, and 7,939 fleas were collected and delivered. The material was processed and identified in the laboratory in accordance with the current regulatory and methodological document on the safety of working with pathogenic biological agents (PBA) of pathogenicity groups I–IV. As a result of sample identification, the species composition of fleas was determined and grouped by geographical areas and landscapes. Research was also carried out (using the PCR method) for the presence of the plague causative agent - Yersinia pestis. According to the results of the study, it was found that, regardless of the biocenotic and climatic characteristics of individual sectors of the Transcaucasian foothill natural plague focus of Azerbaijan, there may be enough carriers of infectious diseases and their growth increases over the years. The frequency of occurrence of the prevailing genera of fleas - Xenopsylla and Nosopsyllus- depends on the natural and climatic conditions of the focus being studied. The analysis for the presence of the plague causative agent among all fleas caught and studied did not give positive results. For the timely detection of epizootics among wild rodents and bloodsuckers, it is important to conduct regular epizootic surveys in enzootic areas for plague.

Navigating Financial Constraints: Understanding Causes, Effects, and Strategic Solutions across Individual, Corporate and Governmental Sectors

Limitations in financial resources were a widespread obstacle in the interdependent global economy, impacting people, firms, and governments. These limitations were evident in the limited availability of financial resources, high levels of debt, and constricted cash flow, often resulting from an intricate interaction of internal and external elements. This paper offered an extensive investigation of the causes, consequences, and strategic remedies for financial limitations in these three areas. On an individual level, financial constraints were often caused by stagnating salaries, excessive living expenses, and insufficient financial knowledge, resulting in heightened susceptibility to financial shocks. Corporations, especially small and medium-sized firms (SMEs), have financial limitations caused by restricted capital access, increased operating expenses, and market instability, which may impede development and prevent innovation. As a result of fiscal mismanagement, increasing public debt, and economic recessions, governments, particularly in emerging countries, have financial limitations that might hinder their capacity to fund vital services and infrastructure. Financial limitations had extensive consequences, affecting economic stability, growth, and general living standards. Individuals with financial constraints encountered a decline in their quality of life and heightened levels of stress, while firms may endure declining profitability and competitiveness. Governments may be compelled to enforce austerity policies, resulting in enduring socio-economic repercussions. To tackle these difficulties, it was crucial to use customised approaches such as enhancing financial literacy, optimising corporate financial management, and advancing fiscal consolidation and structural changes at the governmental level. The objective of this research was to provide practical insights for improving financial resilience and fostering sustainable economic growth by adopting a comprehensive strategy that took into account the interdependence of financial limitations across different sectors. Keywords: Financial constraints, Global economy, Financial resources, Debt levels, Cash flow.

ОБЕСПЕЧЕНИЕ ПОЖАРНОЙ БЕЗОПАСНОСТИ МНОГОЭТАЖНЫХ ЗДАНИЙ ИЗ ДЕРЕВЯННЫХ КОНСТРУКЦИЙ

Проведен обзор современного деревянного домостроения в России и за рубежом. Проанализированы результаты испытаний строительных материалов из древесины на пожарную опасность, а также деревянных строительных конструкций различных типов на огнестойкость и пожарную опасность как без огнезащиты, так и с огнезащитой различных видов. Разработаны предложения в нормативные документы. Намечены направления дополнительных исследований пожарной опасности зданий из деревянных конструкций. The paper considers the issues of ensuring fire safety of multi-storey buildings made of timber frame construction. At present, wooden houses in Russia are built mainly in the individual housing sector and account for 22% of the total construction volume, while industrial wooden houses account for no more than 3% of the wooden houses built annually. Abroad, wood is also widely used in the construction of buildings of various functional purposes: hotels, sports facilities, public and administrative buildings, low-rise and multi-storey buildings. The achievements of science, technology and engineering in the field of timber construction make it possible to design and build buildings of any type and purpose. Modern technology makes it possible to build high-rise timber houses. For example, high-strength composite materials based on wood are used for the construction of multi-storey buildings, in particular LVL beams and CLT panels. Numerous tests carried out at VNIIPO on load-bearing elements made of solid wood (frames, beams) and load-bearing structures made of CLT panels (walls, ceilings) have shown that they provide a significant limit of fire resistance in terms of load-bearing capacity. It is well known that wood is a highly flammable material (G4). This circumstance significantly complicates the use of various building structures in construction from the point of view of ensuring fire safety requirements, including in multi-storey buildings. A set of necessary engineering, technical and organisational measures to ensure fire safety has been developed for buildings with wooden structures up to 4 storeys. Based on the results of these tests, there have been developed proposals to include fire technical parameters in the regulatory requirements for buildings of classes I–III of fire resistance and structural fire hazard class C3. Further research is necessary to develop proposals for inclusion in the regulatory documents for fire safety of multi-storey residential and public buildings made of timber structures up to 28 metres in height.

Barriers to achieving satisfactory dropped objects safety performance in the UK construction sector

In 1980 a deadly explosion occurred at a nuclear missile base precipitated by a dropped object. The potential for major catastrophe, an industry call to action and a research gap forms the rationale for this research into dropped objects. The aim of the research was to devise guidance to assist United Kingdom (UK) based construction sector companies to reduce the frequency of dropped object incidents. A mixed research approach that includes literature review, semi-structured interviews and case studies were used to achieve the purpose of this research. The trend data revealed that dropped object incident rates have remained flat in recent years. The quantitative incident reports and qualitative feedback from interviews concluded that design is a contributory factor in a significant number of incidents and possibly in many cases but more research with a larger quantitative research sample is required. The interviews and literature review revealed several useful recommendations to sector bodies, construction sector companies and for further academic research. Recommendations to Individual Construction Sector Companies are grouped into different themes including manage, eliminate and control. The main recommendations to regulators included ensuring that tool tethering and containers are marked and inspected in line with other lifting equipment. Industry bodies could consider liaising with the energy industry to develop a suitable general construction exclusion zone calculator. Initiatives to improve the design of Mast Climbing Work Platforms to provide integral storage and enclosure solutions could be initiated with the vendors of this equipment. Practitioners and companies could consider offsite construction as a strategic means to reduce the number of dropped objects and consider work scopes that could be executed at ground level rather than at height. Consideration could be given to the more commonly deployed off-site fabrication options such as façade panels and bathroom pods. During detailed design, companies could have a high focus on the mechanism of reducing fixings in facades using Building Information Modelling.There are a number of areas which can be investigated further such as the implications of offsite construction on dropped objects accidents when compared with traditional methods. The research findings hint that Business Information Modelling might be a useful tool to reduce dropped objects on construction sites especially related to facades.While there were several limitations of the research including a limited amount of quantitative data and availability of the specific interview group, the findings of the research will still be useful for the construction sector in the UK and overseas to improve safety performance in construction.

INTENSITY OF GREENHOUSE GAS FORMATION DUE TO LIVESTOCK FARMING ACTIVITIES – AS AN ENVIRONMENTAL FACTOR

According to numerous expert assessments by international organizations and specialists, animal husbandry makes a significant negative contribution to global climate change due to the emission of greenhouse gases (GHG), which are formed at different stages of livestock production as a result of various chemical and biological processes in the body of animals and in livestock waste. The domestic animal husbandry is developing mainly due to the intensification of production in the industry, but traditional farming methods as well as small-scale production in the individual sector also take place. Since the use of various technologies in animal husbandry has different effects on the level of environmental pollution and GHG emissions, the aim of the research was to study the differences in the intensity of GHG gas formation by one animal reared with individual features of animal rearing technologies and business activities. The intensity of gas formation and emission of CH4 and N2O in typical farms for pork production and milk production by one animal reared was determined, analyzed and substantiated. A significant variation in this indicator was found depending on the individual economic and technological features of the studied farms. The average weighted annual intensity of CH4 emission from animal manure in pig farms varied within the range of 0.95–25.71, in cattle farm – 2.74; CH4 from intestinal fermentation of dairy cows – 110.8–148.4; N2O (direct) in pig farms – 0.0–0.106, in cattle farm – 0.229; N2O (indirect) in pig farms – 0.071–0.097, in cattle farm – 0.174. The emission intensity is characterized separately in each age and sex group of animals in the herd structure of farms and the average weighted emission intensity in pork producing farms depending on the season. Based on the research results, it is proposed to use the generalized average annual indicator of greenhouse gas emissions per one average weighted animal reared (kg/head/year) as an indicator of the environmental load of livestock farms on the environment, which will allow planning production volumes with minimal environmental risks in the context of climate change.

Spillover effects of climate transition risk and financial sectors: New evidence from China

AbstractThis paper employs the connectedness approach based on a time‐varying parameter vector autoregressive model (TVP‐VAR) to examine the overall spillover effects, directional spillover effects and pairwise spillover effects of climate transition risk (CTR) and financial sectors of China in both the time domain and frequency domain. The main findings are as follows: Firstly, spillover effects from CTR are significant, impacting not only individual sectors but also amplifying across the entire system. Secondly, while the influence of CTR on financial sectors is lower compared to interconnections among financial sectors, it remains considerable. Thirdly, in the short‐term, risks transmit from CTR to financial sectors, while in the long‐term, the direction reverses. Fourthly, there were significant fluctuations in spillover effects among CTR and financial sectors from 2003 to 2008, indicating increased risk under extreme conditions. The findings of this study contribute to the understanding of potential risks in the financial system by regulatory authorities, facilitating the adoption of appropriate regulatory measures to maintain market stability. Moreover, it provides valuable insights for investors to better accurately assess risks and returns.

International Trade and Environmental Degradation: A Developing World Perspective

We investigate the multifaceted links between sectoral imports and exports, financial growth, energy consumption, GDP, and their ability to affect pollution emissions across 113 developing countries from 1990 to 2020. Using a large dataset, we used both fixed and random effects models to explore the various processes underlying this relationship. A major finding highlights the significant effect that sectoral imports have on the increasing trend of CO2 emissions, shedding light on the individual industries and sectors’ imports responsible for the degradation of the environment. Our study efficiently accommodates country-specific differences and temporal fluctuations by utilizing both country and time-fixed effects as well as random effects models, resulting in a robust and detailed investigation of the relationship. This study provides critical insights into the continuing discussions about sustainable development in poor countries, emphasizing the importance of focused policy actions aimed at decoupling economic growth from environmental impact.

Energy transition in Poland and Spain against changes in the EU energy and climate policy

The European Union climate policy and the subsequent energy transition are expected to cause fundamental changes in individual EU countries, their economies, and industrial sectors. Furthermore, in order to achieve them, high financial outlays are essential. The main purpose of the article is to present a comparative analysis of the pace, directions, and main factors of the energy transition in Poland and Spain against the changes in the EU energy and climate policy. In particular, the subject of the study is the changes in the fuel structure of electricity generation (energy mix) and the changes in the concentration of energy generation. The analysis concentrates on Poland and Spain against the background of the group of EU27 countries. The study adopted a long-term perspective (1990–2020). The methodology used taxonomic measures of variability of structures and measures of concentration, as well as measures of descriptive and mathematical statistics. The result of the research proves that the EU common climate and energy policy has explicitly accelerated changes in the energy mix, both in the EU27 and in the studied countries, including those traditionally based on coal. The concentration analysis demonstrated an increase in diversification resulting in a significant increase in the share of renewable and low-carbon sources. The taxonomic analysis additionally proved that there was a parallel process towards making the energy mix of the studied countries more similar to the EU27. The limitation of the research is the adopted triangulation arrangement of the studied structures (EU27, EU15, countries that accessed the EU after 2004), enforced in this pilot research, but possible to expand the field of perception in subsequent research. What serves as a proof of the originality of the study is the fulfilment of research gaps in the long-term study of the degree of changes in the concentration of the energy mix structure of EU countries, and especially the study of the degree of intensity of its similarity. The application value of the study is its use in the energy policies of countries traditionally based on coal for the indication of the taken position, the goals, and ways to achieve them based on the experience of other countries.

Методологические проблемы оценки капиталовложений электросетевых компаний

In the article the author reveals the most significant methodological problems in this most important area, which is the basis for the reproduction of economic systems, on the basis of considering the most widely used methods of capital investment assessment. The article also provides a brief theoretical characterization of capital investments. It is concluded that the reason for methodological problems in the assessment of capital investments is the issue of the nature of capital, which has not been fully resolved in the field of fundamental economic theory. The author draws attention to the fact that the detailed methods of capital investment assessment for specific conditions of management of individual sectoral economic systems, elaborated in scientific articles, dissertations and other works, do not receive scientific generalization and balanced assessment of the community. In fact, it means that there are no methods proven and used by many researchers and practitioners. It is shown that it is inappropriate to completely identify the investment process, project appraisal and capital investments of enterprises. The author points out the gap between financial and technological efficiency existing in the theory and practice of work with investments. Further, using the example of the Russian electric power transmission industry, the author shows how general methods of capital investment assessment may not be applicable depending on specific industry conditions, and how theoretical and methodological problems in practice turn into a lack of tools for decision-making. In conclusion, based on the consideration of disproportions in the mechanism of capital investment assessment, implementation and regulation, another fundamental issue of the theory arises – the need to change approaches to the conflict of interests and regulation of natural monopolies as a non-cooperative game.

The SRG/eROSITA All-Sky Survey. View of the Virgo Cluster

As the closest galaxy cluster, the Virgo Cluster is an exemplary environment for the study of the large-scale filamentary structure and physical effects that are present in cluster outskirts but absent from the more easily studied inner regions. Here, we present an analysis of the SRG/eROSITA data from five all-sky surveys. eROSITA allows us to resolve the entire Virgo cluster and its outskirts on scales between 1 kpc and 3 Mpc, covering a total area on the sky of about 25$^ by 25$^ We utilized image manipulation techniques and surface brightness profiles to search for extended emission, surface brightness edges, and features in the outskirts. We employed a method of comparing mean and median profiles to measure gas clumping out to and beyond the virial radius. Surface brightness analysis of the cluster and individual sectors of the cluster reveal the full extent of previously identified cold fronts to the north and south. The emissivity bias due to gas clumping, which we quantify over three orders of magnitude in the radial range, is found to be mild, consistent with previous findings. We find uniform clumping measurements in all directions, with no enhancements along candidate filaments. We find an estimated virial gas mass of $M_ gas r<r_ $\,M$_ Through imaging analysis we detect the presence of extended emission spanning 320\,kpc to the southwest of M49. The extension has a significance of 3.15sigma and is coincident with radio emission detected with LOFAR, which could be evidence of an accretion shock or turbulent reacceleration as the M49 group or background W' cloud falls into the cluster and interacts with the intracluster medium.

Short-Term Exposure to Fine Particulate Matter and Ozone: Source Impacts and Attributable Mortalities.

Short-term exposure to particles with aerodynamic diameters less than 2.5 μm (PM2.5) and ozone (O3) are important risk factors for human health. Despite the awareness of reducing attributable health burden, region-specific and source-specific strategies remain less explored due to the gap between precursor emissions and health effects. In this study, we isolate the health burden of individual sector sources of PM2.5 and O3 precursors, nitrogen oxides (NOx) and volatile organic compounds (VOCs), across the globe. Specifically, we estimate mortalities attributable to short-term exposure using machine-learning-based daily exposure estimates and quantify sectoral impacts using chemical transport model simulations. Globally, short-term exposure to PM2.5 and O3 result in 713.5 (95% Confidence Interval: 598.8-843.3) thousand and 496.3 (371.3-646.1) thousand mortalities in 2019, respectively, of which 12.5% are contributed by fuel-related NOx emissions from transportation, energy, and industry. Sectoral impacts from anthropogenic NOx and VOC emissions on health burden vary significantly among seasons and regions, requiring a target shift from transportation in winter to industry in summer for East Asia, for instance. Emission control and health management are additionally complicated by unregulated natural influences during climatic events. Fire-sourced NOx and VOC emissions, respectively, contribute to 8.5 (95% CI: 6.2-11.7) thousand and 4.8 (3.6-5.9) thousand PM2.5 and O3 mortalities, particularly for tropics with high vulnerability to climate change. Additionally, biogenic VOC emissions during heatwaves contribute to 1.8 (95% CI: 1.5-2.2) thousand O3-introduced mortalities, posing challenges in urban planning for high-income regions, where biogenic contributions to health burden during heatwaves are 13% of anthropogenic contributions annually. Our study provides important implications for temporally dynamic and sector-targeted emission control and health management strategies, which are of urgency under the projection of continuously increasing energy consumption and changing climate.