Сучасна Україна в глобальному середовищі: стратегічні орієнтири економічного розвитку: монографія

Монографія об‘єднала зусилля науковців факультету міжнародної економіки Дніпропетровського національного університету імені Олеся Гончара та учасників Міжнародної науково-практичної конференції «Стратегії економічного розвитку країн в умовах глобалізації» у процесі пошуку й визначення стратегічних орієнтирів економічного розвитку України в глобальному середовищі й обрання своєї вірної дороги. На відміну від Ван Гога, усі дороги якого ведуть у нікуди, ми віримо, що спроможні обрати ту саму – нашу дорогу у світле й заможне майбутнє, й усі наші зусилля не будуть марними

Regional Security in Central Asia After the Return of the Taliban to Power: Challenges and Threats, Scenarios

Introduction. The article focuses on reconstructing the major parameters of the complex of challenges and threats to post-Soviet Central Asia regional security that has emerged in the wake of or in direct connection with the radical change of the situation in Afghanistan after August 2021. These challenges and threats have developed across several functional and territorial dimensions and require a comprehensive analysis followed by the building of scenarios for their evolution. Methods and materials. The research relies on the regional security complex theory developed by Barry Buzan and Ole Waever. The methodological toolkit includes external indirect observation, political descriptive and historical genetic methods, scenario building. The research materials include official statements, news briefs, expert opinions, periodicals, academic papers. Analysis. The authors have analyzed the geostrategic, regional-strategic, regional-economic, and regional-societal dimensions of the challenges and threats to Central Asian regional security generated by the changes in Afghanistan and have built scenarios of their evolution. The major geostrategic challenge is the exacerbation of U.S. – Chinese contradictions centered on the influence of the Taliban factions. The key regional-strategic threat is the risk of the Afghan conflict spilling over into Tajikistan or Turkmenistan. The regional-economic challenges include the risks of blocking trans-Afghan transport, pipeline, and electricity transmission projects. The regional-societal risks consist of the dissemination of radical Islamist ideologies from Afghanistan throughout Central Asia. The two basic scenarios of the regional security evolution are inertia or a resumption of a full-scale civil war in Afghanistan. Results. The authors have worked out sets of recommendations for regional policymakers and the intergovernmental bodies whose functions include maintaining security and stability in Central Asia. Authors’ contribution. A.E. Dzhorobekova has developed the general concept of the article and organized the research. E.F. Troitskiy has focused on the analysis of threats and challenges to regional security. S.M. Yun has developed scenarios for regional security situations. A.G. Timoshenko has formulated the relevant recommendations

Reconstruction of primary vertices at the ATLAS experiment in Run 1 proton–proton collisions at the LHC

This paper presents the method and performance of primary vertex reconstruction in proton–proton collision data recorded by the ATLAS experiment during Run 1 of the LHC. The studies presented focus on data taken during 2012 at a centre-of-mass energy of √s=8 TeV. The performance has been measured as a function of the number of interactions per bunch crossing over a wide range, from one to seventy. The measurement of the position and size of the luminous region and its use as a constraint to improve the primary vertex resolution are discussed. A longitudinal vertex position resolution of about 30μm is achieved for events with high multiplicity of reconstructed tracks. The transverse position resolution is better than 20μm and is dominated by the precision on the size of the luminous region. An analytical model is proposed to describe the primary vertex reconstruction efficiency as a function of the number of interactions per bunch crossing and of the longitudinal size of the luminous region. Agreement between the data and the predictions of this model is better than 3% up to seventy interactions per bunch crossing

Search for dark matter produced in association with bottom or top quarks in √s = 13 TeV pp collisions with the ATLAS detector

A search for weakly interacting massive particle dark matter produced in association with bottom or top quarks is presented. Final states containing third-generation quarks and miss- ing transverse momentum are considered. The analysis uses 36.1 fb−1 of proton–proton collision data recorded by the ATLAS experiment at √s = 13 TeV in 2015 and 2016. No significant excess of events above the estimated backgrounds is observed. The results are in- terpreted in the framework of simplified models of spin-0 dark-matter mediators. For colour- neutral spin-0 mediators produced in association with top quarks and decaying into a pair of dark-matter particles, mediator masses below 50 GeV are excluded assuming a dark-matter candidate mass of 1 GeV and unitary couplings. For scalar and pseudoscalar mediators produced in association with bottom quarks, the search sets limits on the production cross- section of 300 times the predicted rate for mediators with masses between 10 and 50 GeV and assuming a dark-matter mass of 1 GeV and unitary coupling. Constraints on colour- charged scalar simplified models are also presented. Assuming a dark-matter particle mass of 35 GeV, mediator particles with mass below 1.1 TeV are excluded for couplings yielding a dark-matter relic density consistent with measurements

Review of rare bird species in the North Kazakhstan: update and additions to the regional avifauna list

The study details long-term observations conducted in the North Kazakhstan region from 2016 to 2024, focusing on bird species that were either previously unrecorded or rarely encountered. The research clarified data on the occurrence and seasonal activity of specific species by analyzing unpublished observations and recent publications. A notable outcome was the addition of six new species to the regional avifauna list, enhancing our understanding of local bird diversity. These findings underscore the dynamic nature of bird populations and the potential impacts of ecological and climatic changes. Key factors contributing to the registration of new species include climate change and habitat transformation. The results highlight the importance of ongoing biodiversity monitoring in light of global changes

The Size Ellect on the Infrared Spectra of Condensed Media Under Conditions of ID, 2D and 3D Dielectric Confinement

A general expression for the dielectric loss spectrum of an absorbing composite medium was obtained from a Maxwell-Garnett general equation. This expression was simplified for the cases of one, two and three dimensional dielectric confinement in both ordered and disordered thin layers, rods (wires) and spheres of absorbing medium which are considered as mesoparticles or mesoscopic molecules. This theoretical approach was verified experimentally using high purity organic liquids with strong absorption bands in the infrared range. Three organic liquids, namely benzene, chloroform and carbon disulphide, were measured in various dielectric confinement configurations using Fourier Transform Infrared (FTIR) spectroscopy with a Grazing Angle attachment GATRTM. A significant shift of the resonant absorption band of liquid mesoparticles was observed for various dielectric confinement geometries which is in good agreement with theoretical predictions. Possible applications of this work include investigations of industrial smoke, toxic aerosols and liquid droplets

ATLAS Run 1 searches for direct pair production of third-generation squarks at the Large Hadron Collider

This paper reviews and extends searches for the direct pair production of the scalar supersymmetric partners of the top and bottom quarks in proton-proton collisions collected by the ATLAS collaboration during the LHC Run 1. Most of the analyses use 20 fb$^{-1}$ of collisions at a centre-of-mass energy of $\sqrt{s}$ = 8 TeV, although in some case an additional 4.7 fb$^{-1}$ of collision data at $\sqrt{s}$ = 7 TeV are used. New analyses are introduced to improve the sensitivity to specific regions of the model parameter space. Since no evidence of third-generation squarks is found, exclusion limits are derived by combining several analyses and are presented in both a simplified model framework, assuming simple decay chains, as well as within the context of more elaborate phenomenological supersymmetric models