Determination of the Fragmentation Parameters of the Multi-charge Component of Primary Cosmic Rays

Determination of fragmentation parameters of multicharge component of primary cosmic ray

On the upper limit of antinuclei content in cosmic rays

Upper limit of antinuclei content in cosmic ray

Emotional paths leading to opportunity desirability and feasibility beliefs through controllability

This is the final version. Available from Sage Publications via the DOI in this record.Extant studies promote opportunity belief as an antecedent of entrepreneurial action. However, we do not sufficiently understand how beliefs about the desirability and feasibility of an entrepreneurial opportunity are formed. We argue that desirability and feasibility are related but distinct micro-foundations of entrepreneurial action formed through different cognitive-emotional mechanisms. Drawing on the appraisal tendency framework, we investigate the indirect effects of three basic emotions (anger, fear and happiness) on desirability and feasibility through the appraisal tendency of controllability. In an experimental study (N= 191), we find evidence for the distinctiveness and interconnectedness of desirability and feasibility beliefs. In addition, our findings show that desirability can be predicted by emotions through controllability, but we cannot predict feasibility through the same appraisal process. Our study seeks insights concerning how desirability and feasibility beliefs regarding an entrepreneurial opportunity are distinctively formed based on the inner cognitive and emotional processes of individuals

On the estimate of the sigma^(I = 1)_(KN)(0)-term value from the energy level shift of kaonic hydrogen in the ground state

Using the experimental data on the energy level shift of kaonic hydrogen in the ground state (the DEAR Collaboration, Phys. Rev. Lett. 94, 212302 (2005)) and the theoretical value of the energy level shift, calculated within the phenomenological quantum field theoretic approach to the description of strong low-energy anti-K N and anti-K NN interactions developed at Stefan Meyer Institut fuer subatomare Physik in Vienna, we estimate the value of the sigma^(I = 1)_(KN)(0)-term of low-energy anti-K N scattering. We get sigma^(I = 1)_(KN)(0) = (433 +/- 85) MeV. This testifies the absence of strange quarks in the proton structure.Comment: 7 pages, no figure

The Eurasian economic union customs’ administration mechanism in the digital era

Purpose: The aim of the article is to identify the prospects for the Eurasian Economic Union (EEU) customs regulation mechanism in digital transformation following the global trend. Design/Methodology/Approach: For the purpose of determining priorities for the EEU customs mechanism digitization, it is necessary to define the regulatory framework on which the digitalization process is based, to analyze the customs’ regulation sphere digitization direction in the member states of the EEU and to formulate the priorities for improving the EEU customs’ regulation mechanism on the information and communication technologies. Findings: EEU customs’ regulation mechanism digitization key areas have been identified, based on the provisions of the EEU’s Digital Agenda and the Declaration on further development of integration processes within the Union. Practical implications: The results can be implemented in the Eurasian Economic Commission management practice, the EEU member states customs’ authorities in order to improve the customs regulation mechanism. Originality/Value: The main contribution of this study is to identify the differences in the customs regulation sphere digitization processes in the EEU member states and to identify the areas for implementing a unified strategy.peer-reviewe

Instantons and Yang-Mills Flows on Coset Spaces

We consider the Yang-Mills flow equations on a reductive coset space G/H and the Yang-Mills equations on the manifold R x G/H. On nonsymmetric coset spaces G/H one can introduce geometric fluxes identified with the torsion of the spin connection. The condition of G-equivariance imposed on the gauge fields reduces the Yang-Mills equations to phi^4-kink equations on R. Depending on the boundary conditions and torsion, we obtain solutions to the Yang-Mills equations describing instantons, chains of instanton-anti-instanton pairs or modifications of gauge bundles. For Lorentzian signature on R x G/H, dyon-type configurations are constructed as well. We also present explicit solutions to the Yang-Mills flow equations and compare them with the Yang-Mills solutions on R x G/H.Comment: 1+12 page

Noncommutative Moduli for Multi-Instantons

There exists a recursive algorithm for constructing BPST-type multi-instantons on commutative R^4. When deformed noncommutatively, however, it becomes difficult to write down non-singular instanton configurations with topological charge greater than one in explicit form. We circumvent this difficulty by allowing for the translational instanton moduli to become noncommutative as well. This makes possible the ADHM construction of 't Hooft multi-instanton solutions with everywhere self-dual field strengths on noncommutative R^4.Comment: 1+9 pages; v2: reference added, published versio

Traveling through potential energy landscapes of disordered materials: the activation-relaxation technique

A detailed description of the activation-relaxation technique (ART) is presented. This method defines events in the configurational energy landscape of disordered materials, such as a-Si, glasses and polymers, in a two-step process: first, a configuration is activated from a local minimum to a nearby saddle-point; next, the configuration is relaxed to a new minimum; this allows for jumps over energy barriers much higher than what can be reached with standard techniques. Such events can serve as basic steps in equilibrium and kinetic Monte Carlo schemes.Comment: 7 pages, 2 postscript figure

Dynamical model and nonextensive statistical mechanics of a market index on large time windows

The shape and tails of partial distribution functions (PDF) for a financial signal, i.e. the S&P500 and the turbulent nature of the markets are linked through a model encompassing Tsallis nonextensive statistics and leading to evolution equations of the Langevin and Fokker-Planck type. A model originally proposed to describe the intermittent behavior of turbulent flows describes the behavior of normalized log-returns for such a financial market index, for small and large time windows, both for small and large log-returns. These turbulent market volatility (of normalized log-returns) distributions can be sufficiently well fitted with a $\chi^2$-distribution. The transition between the small time scale model of nonextensive, intermittent process and the large scale Gaussian extensive homogeneous fluctuation picture is found to be at $ca.$ a 200 day time lag. The intermittency exponent ($\kappa$) in the framework of the Kolmogorov log-normal model is found to be related to the scaling exponent of the PDF moments, -thereby giving weight to the model. The large value of $\kappa$ points to a large number of cascades in the turbulent process. The first Kramers-Moyal coefficient in the Fokker-Planck equation is almost equal to zero, indicating ''no restoring force''. A comparison is made between normalized log-returns and mere price increments.Comment: 40 pages, 14 figures; accepted for publication in Phys Rev