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We present our experience of porting the code used in the wave-packet convergent-close-coupling (WP-CCC) approach to run on NVIDIA V100 and AMD MI250X GPUs. The WP-CCC approach is a method used in the field of ion-atom collision physics to describe various processes such as elastic scattering, target excitation and electron-capture by the projectile. It has demonstrated its effectiveness in modelling collisions involving proton or bare ion projectiles with various atomic and molecular targets, especially those which can be considered as one or two-electron systems. Such calculations find their application in computational atomic physics as well as in the modelling of fusion plasmas and in hadron therapy for cancer treatment. The main computational cost of the method lies in the solution of an emerging set of coupled first-order differential equations. This involves implementing the standard Runge-Kutta method while varying the projectile position along multiple straight-line paths. At each projectile position several millions of matrix elements need to be calculated which is accomplished using the OpenACC programming model. Once these matrix elements are computed, the subsequent steps involve matrix inversion and multiplication with another matrix. To expedite these operations, a GPU-accelerated LAPACK routine, specialised for solving systems of linear equations, is employed. For AMD GPUs, this routine is accessible through the hipSOLVER library, while for NVIDIA GPUs, it can be obtained from the cuSOLVER library. The portability, performance and energy efficiency of the CPU-only code have been compared with the GPU-accelerated version running on AMD and NVIDIA GPUs. The implementation of GPU-accelerated WP-CCC code opens up avenues for exploring more sophisticated collision processes involving complex projectile and target structures, which were previously considered infeasible., Comment: 7 pages, 3 figures, 1 algorithm

We study e+-H(n) and Ps(n)-p collisions near the three-body breakup threshold and thresholds for the charge-transfer processes.We show that classical trajectoryMonte Carlo (CTMC) simulations for the three-body breakup agree reasonably well in this energy region with quantum-mechanical convergent close-coupling (CCC) calculations even if the initial hydrogen atom or positronium atom is in the ground state. The threshold behavior of the three-body breakup cross section in e+-H(1s) and Ps(1s)-p collisions agrees with the Wannier law with Klar’s exponent and obeys the classical scaling laws, although some deviation from the Klar-Wannier behavior is observed in the CCC results. Below the threshold the agreement between CTMC and CCC disappears. In particular the CTMC method fails completely for the processes of H formation in Ps(1s)-p collisions and Ps formation in e+-H collisions well below the three-body breakup threshold. For higher initial states the CTMC results below the threshold improve substantially, in accordance with the correspondence principle. This is explained by comparing the quantum-mechanical threshold laws with the classical laws.

Asymptotic normalization coefficients (ANC) determine the overall normalization of cross sections of peripheral radiative capture reactions. In a recent paper [Blokhintsev et al., Eur. Phys. J. A 58, 257 (2022)], we considered the ANC $C_0$ for the virtual decay $^{16}$O$(0^+; 6.05$ MeV)$\to \alpha+^{12}$C(g.s.). In the present paper, which can be regarded as a continuation of the previous, we treat the ANCs $C_l$ for the vertices $^{16}$O$(J^\pi)\to \alpha+^{12}$C(g.s.) corresponding to the other three bound excited states of $^{16}$O ($J^\pi=3^-$, $2^+$, $1^-$, $l=J$). ANCs $C_l$ ($l=3,\,2,\,1$) are found by analytic continuation in energy of the $\alpha^{12}$C $l$-wave partial scattering amplitudes, known from the phase-shift analysis of experimental data, to the pole corresponding to the $^{16}$O bound state and lying in the unphysical region of negative energies. To determine $C_l$, the scattering data are approximated by the sum of polynomials in energy in the physical region and then extrapolated to the pole. For a more reliable determination of the ANCs, various forms of functions expressed in terms of phase shifts were used in analytical approximation and subsequent extrapolation., Comment: arXiv admin note: substantial text overlap with arXiv:2208.09587

Kamilla Mussina,1 Shirali Kadyrov,2 Ardak Kashkynbayev,3 Sauran Yerdessov,1 Gulnur Zhakhina,1 Yesbolat Sakko,1 Amin Zollanvari,4 Abduzhappar Gaipov1 1Department of Medicine, Nazarbayev University School of Medicine, Astana, Kazakhstan; 2Department of Mathematics and Natural Sciences, Suleyman Demirel University, Kaskelen, Kazakhstan; 3Department of Mathematics, Nazarbayev University, Astana, Kazakhstan; 4Department of Electrical and Computer Engineering, School of Engineering and Digital Sciences, Nazarbayev University, Astana, KazakhstanCorrespondence: Abduzhappar Gaipov, Department of Medicine, Nazarbayev University School of Medicine, Kerey and Zhanibek Street 5/1, Astana, 010000, Kazakhstan, Tel +77172706297, Email abduzhappar.gaipov@nu.edu.kzBackground: HIV is a growing public health burden that threatens thousands of people in Kazakhstan. Countries around the world, including Kazakhstan, are facing significant problems in predicting HIV infection prevalence. It is crucial to understand the epidemiological trends of infectious diseases and to monitor the prevalence of HIV in a long-term perspective. Thus, in this study, we aimed to forecast the prevalence of HIV in Kazakhstan for 10 years from 2020 to 2030 by using mathematical modeling and time series analysis.Methods: We use statistical Autoregressive Integrated Moving Average (ARIMA) models and a nonlinear epidemic Susceptible-Infected (SI) model to forecast the HIV infection prevalence rate in Kazakhstan. We estimated the parameters of the models using open data on the prevalence of HIV infection among women and men (aged 15– 49 years) in Kazakhstan provided by the Kazakhstan Bureau of National Statistics. We also predict the effect of pre-exposure prophylaxis (PrEP) control measures on the prevalence rate.Results: The ARIMA (1,2,0) model suggests that the prevalence of HIV infection in Kazakhstan will increase from 0.29 in 2021 to 0.47 by 2030. On the other hand, the SI model suggests that this parameter

We present results of calculations of several processes resulting from positronium (Ps) collisions with antiprotons: antihydrogen formation, Ps breakup, and nPs-changing collisions. Calculations utilize the quantum convergent close-coupling (CCC) method and the classical trajectory Monte Carlo (CTMC) method. We identify a region of Ps principal quantum numbers nPs and Ps energies where the classical description is valid and where the CCC calculations become computationally too expensive. This allows us to present the most complete and reliable set of cross sections in a broad range of nPs and initial orbital momentum quantum numbers lPs which are necessary for experiments with antihydrogen at CERN.

The $^{12}{\rm C}(\alpha,\gamma)^{16}$O reaction, determining the survival of carbon in red giants, is of interest for nuclear reaction theory and nuclear astrophysics. A specific feature of the $^{16}$O nuclear structure is the presence of two subthreshold bound states, (6.92 MeV, 2$^+$) and (7.12 MeV, 1$^-$), that dominate the behavior of the low-energy $S$-factor. The strength of these subthreshold states is determined by their asymptotic normalization coefficients (ANCs), which need to be known with high accuracy. Recently, using a model-independent extrapolation method, Blokhintsev {\it et al.} [Eur. Phys. J. A {\bf 59} (2023) 162] determined the ANCs for the $\alpha$-particle removal taking into account three subthreshold states in $^{16}$O. The goal of this paper is to address four main problems elucidating the impact of the subthreshold ANCs on the low-energy $S$-factor. Firstly, we analyse the connection between variations of the subthreshold ANCs and the low-energy $S$-factor, in particular, at the most effective energy of $300$ keV. Secondly, we calculate contributions to the $S(300\,{\rm keV})$-factor from the subthreshold $1^{-}$ and $2^{+}$ resonances, that are controlled by the subthreshold ANCs. We also evaluate the contribution of the uncertainties of the subthreshold ANCs to the budget of the low-energy $S$-factor uncertainty, especially, the $S(300\,{\rm keV})$-factor. Thirdly, we analyse interference of the subthreshold resonances (SRs) with higher resonances and with the $E1$ and $E2$ direct captures to the ground state. Finally, we investigate a correlated effect of the subthreshold and ground-state ANCs on the low-energy $S$-factor and, in particular, on the $S(300\,{\rm keV})$-factor.

One of the most recognisable features of ageing is a decline in brain health and cognitive dysfunction, which is associated with perturbations to regular lipid homeostasis. Although ageing is the largest risk factor for several neurodegenerative diseases such as dementia, a loss in cognitive function is commonly observed in adults over the age of 65. Despite the prevalence of normal age-related cognitive decline, there is a lack of effective methods to improve the health of the ageing brain. In light of this, exercise has shown promise for positively influencing neurocognitive health and associated lipid profiles. This review summarises age-related changes in several lipid classes that are found in the brain, including fatty acyls, glycerolipids, phospholipids, sphingolipids and sterols, and explores the consequences of age-associated pathological cognitive decline on these lipid classes. Evidence of the positive effects of exercise on the affected lipid profiles are also discussed to highlight the potential for exercise to be used therapeutically to mitigate age-related changes to lipid metabolism and prevent cognitive decline in later life.

This paper investigates the asymmetric impact of oil price fluctuations on non-performing loans (NPLs) between 2009-Q1 and 2020-Q1 for 28 banks in Kazakhstan. Dynamic panel threshold analysis revealed an initial increase of oil prices, improving creditworthiness, thereby reducing NPLs; however, after cross a certain threshold, the relationship was shown to become the opposite. This finding is in line with the Ricardian curse and resource windfall. The results suggest that optimal borrowings and lending should be actively monitored to mitigate potential liquidity problems of banks and consequently NPLs. The practical implications and policy recommendation of which are important to policy makers.

This paper investigates the asymmetric impact of oil price fluctuations on non-performing loans (NPLs) between 2009-Q1 and 2020-Q1 for 28 banks in Kazakhstan. Dynamic panel threshold analysis revealed an initial increase of oil prices, improving creditworthiness, thereby reducing NPLs; however, after cross a certain threshold, the relationship was shown to become the opposite. This finding is in line with the Ricardian curse and resource windfall. The results suggest that optimal borrowings and lending should be actively monitored to mitigate potential liquidity problems of banks and consequently NPLs. The practical implications and policy recommendation of which are important to policy makers.

One of the most recognisable features of ageing is a decline in brain health and cognitive dysfunction, which is associated with perturbations to regular lipid homeostasis. Although ageing is the largest risk factor for several neurodegenerative diseases such as dementia, a loss in cognitive function is commonly observed in adults over the age of 65. Despite the prevalence of normal age-related cognitive decline, there is a lack of effective methods to improve the health of the ageing brain. In light of this, exercise has shown promise for positively influencing neurocognitive health and associated lipid profiles. This review summarises age-related changes in several lipid classes that are found in the brain, including fatty acyls, glycerolipids, phospholipids, sphingolipids and sterols, and explores the consequences of age-associated pathological cognitive decline on these lipid classes. Evidence of the positive effects of exercise on the affected lipid profiles are also discussed to highlight the potential for exercise to be used therapeutically to mitigate age-related changes to lipid metabolism and prevent cognitive decline in later life.

Asymptotic normalization coefficients (ANC) determine the overall normalization of cross sections of peripheral radiative capture reactions. In the present paper, we treat the ANC $C$ for the virtual decay $^{16}$O$(0^+; 6.05$ MeV)$\to \alpha+^{12}$C(g.s.), the known values of which are characterized by a large spread $(0.29-1.65)\times 10^3$ fm$^{-1/2}$. The ANC $C$ is found by analytic continuation in the energy of the $\alpha^{12}$C $s$-wave scattering amplitude, known from the phase-shift analysis of experimental data, to the pole corresponding to the $^{16}$O bound state and lying in the unphysical region of negative energies. To determine $C$, two different methods of analytic continuation are used. In the first method, the scattering data are approximated by the sum of polynomials in energy in the physical region and then extrapolated to the pole. The best way of extrapolation is chosen on the basis of the exactly solvable model. Within the second approach, the ANC $C$ is found by solving the Schr\"odinger equation for the two-body $\alpha^{12}$C potential, the parameters of which are selected from the requirement of the best description of the phase-shift analysis data at a fixed experimental binding energy of $^{16}$O$(0^+; 6.05$ MeV) in the $\alpha+^{12}$C channel. The values of the ANC $C$ obtained within these two methods lie in the interval (886--1139) fm$^{-1/2}$., Comment: arXiv admin note: text overlap with arXiv:1710.10767

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

The article describes in detail the problems and ways of solving the problem of developing the basic competencies of students in the field of crafts in an electronic information learning environment.

In the production of engineering and geodetic surveys of linear structures, the geodetic basis is the points (points) of a planned high-altitude survey geodetic network created in the form of main passages laid along the route.The article discusses the composition of engineering and geodetic surveys of linear structures and general requirements for them.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

The article describes in detail the problems and ways of solving the problem of developing the basic competencies of students in the field of crafts in an electronic information learning environment.

The astrophysical $^7{\rm Be}(p, \gamma)^8{\rm B}$ direct capture process is studied in the framework of a two-body single-channel model with potentials of the Gaussian form. A modified potential is constructed to reproduce the new experimental value of the $S$-wave scattering length and the known astrophysical $S$ factor at the Gamow energy, extracted from the solar neutrino flux. The resulting potential is consistent with the theory developed by Baye [Phys. Rev. C {\bf 62} (2000) 065803] according to which the $S$-wave scattering length and the astrophysical $S$ factor at zero energy divided by the square of ANC are related. The obtained results for the astrophysical $S$ factor at intermediate energies are in good agreement with the two data sets of Hammache {\it et al.} [Phys. Rev. Lett. {\bf 86}, 3985 (2001); {\it ibid.} {\bf 80}, 928 (1998)]. Linear extrapolation to zero energy yields $ S_{17}(0) \approx (20.5 \pm 0.5) \, \rm eV \, b $, consistent with the Solar Fusion II estimate. The calculated reaction rates are substantially lower than the results of the NACRE II collaboration., Comment: 16 pages, 5 figures, 2 tables

In the production of engineering and geodetic surveys of linear structures, the geodetic basis is the points (points) of a planned high-altitude survey geodetic network created in the form of main passages laid along the route.The article discusses the composition of engineering and geodetic surveys of linear structures and general requirements for them.

An important role in the upbringing of the younger generation as physically healthy people will be played by the improvement of physical education and sports, and recreational activities in educational institutions. The article deals with physical education and sports in educational institutions, morning physical education, physical education, sports sections, sports competitions and holidays, as well as independent exercises and training using natural factors.

The article describes in detail the problems and ways of solving the problem of developing the basic competencies of students in the field of crafts in an electronic information learning environment.

Improving the effectiveness of teaching history using innovative technologies. The article discusses the importance of facilitating teaching, the importance of using a variety of methods and techniques to engage students in learning, game technology as one of the most innovative learning technologies, and its effectiveness.

This article shows that such great geniuses in the field of science have been educated in educating our youth, that their great achievements in the development of science still retain their value, that our unique and unique scientific and spiritual heritage is a source of strength and inspiration. is becoming a source.

This article highlights the institutional changes in the civil service for human development and talent in New Uzbekistan.The article analyzes the content and viability of reforms aimed at improving human resources in the civil service in Uzbekistan over the past four years.

The article presents the main signs of political, economic and social reforms in the era of Turgut Ozal - a head of economic activity, the Prime Minister and the President of the Republic of Turkey during the 1980s and 1990s. Political ozalism (domestic and foreign policy), economic ozalism, social ozalism. Turgut Ozal 's ideology is a synthesis of technological Westernization and cultural Turkism and Islamism. Many Turkish scholars call his ideology "Turkish-Islamic synthesis" (Atila Eralp et al., 1993). Following the principles of the new ideology, Turkey has embarked on the path of achieving a special position in the international arena that would allow it to participate in global processes. it should be emphasized that Ottoman and Islamic culture was one part of the political course of Ozalism. The second half was economic and political liberalism. Such ambivalence or dualism of views is linked to Turgut Ozal’s belief that modernization can only be carried out through liberalization. The Prime Minister of the Republic used economic liberalism to achieve political pluralism. The article outlines the peculiarities of the "Turkish miracle," which occurred as a result of the measures taken to thoroughly revise domestic economic regulation and state intervention in the economy. The essence of them was a significant reorganization, weakening the legal and de facto monopoly of the state over the economy of the country., El artículo presenta los principales signos de las reformas políticas, económicas y sociales en la era de Turgut Ozal, jefe de la actividad económica, primer ministro y presidente de la República de Turquía durante los años ochenta y noventa. Ocionalismo político (política interior y exterior), ozalismo económico, ozalismo social. La ideología de Turgut Ozal es una síntesis de la occidentalización tecnológica y el turquismo cultural y el islamismo. Muchos eruditos turcos llaman a su ideología "síntesis turco-islámica" (Atila Eralp et al., 1993). Siguiendo los principios de la nueva ideología, Turquía se ha embarcado en el camino de lograr una posición especial en la arena internacional que le permita participar en los procesos globales. Debe enfatizarse que la cultura otomana e islámica fue una parte del curso político del Ozalismo. La segunda mitad fue el liberalismo económico y político. Esa ambivalencia o dualismo de puntos de vista está vinculada a la creencia de Turgut Ozal de que la modernización solo puede llevarse a cabo mediante la liberalización. El Primer Ministro de la República utilizó el liberalismo económico para lograr el pluralismo político. El artículo describe las peculiaridades del "milagro turco", que ocurrió como resultado de las medidas tomadas para revisar a fondo la regulación económica nacional y la intervención estatal en la economía. La esencia de ellos fue una reorganización significativa, debilitando el monopolio legal y de facto del estado sobre la economía del país.