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Volume 10, Issue 2, 2017

Author: Anda GHEORGHIU


Abstract: At the end of the 20th century, a new interdisciplinary science, called Econophysics has emerged. This new discipline applies theories and methods, previously formulated by physicists (such as statistical mechanics, power laws, stochastic processes and nonlinear dynamics), in order to solve problems in economics and markets. Physics theories and models that have been applied in economics until now include the kinetic theory of gas, chaos theory, statistical mechanics, fluid dynamics, diffusion theory, classical mechanics, quantum mechanics, stochastic processes, cellular automata, nonlinear dynamics, neural networks, pattern recognition, theory of turbulence, random matrix theory, string theory, etc. Some of the most prominent personalities in the field of Econophysics are: H. E. Stanley, V.Yakovenko, J-P. Bouchaud, Bikas K Chakrabarti, T. di Matteo, E. Scalas, E. Guevara, M. Ausloos, J. Mimkes, F. Kusmartsev, I. Spânulescu and Anca Gheorghiu. Definitely, the list is not complete, there are many other scientists that worth a mention in a future monograph of Econophysics. The paper enumerates also some notable achievements of econophysicists in Romania.
Econophysics tries to clarify empirical facts that are not explained by today’s conventional financial economics. Still, there is a deficit of communication between physicists and economists, consequently mainstream economists to do not approve or are unenthusiastic to accept furthermost of the theories of Econophysics, partly because of their preconceived ideas, their theoretical background, and partly due to the difficulty/impossibility in testing such models. Their reduced knowledge in natural science prevents them to explain the tangible economic problems more exactly and proficiently. Physicists, at their turn, often simplify economic and social reality so much, that economists cannot accept their theories; still, physicists come with no preconceptions and often, with a lot
of enthusiasm and original viewpoints. The conclusion of this paper is that, in the future years, economists and physicists have to overcome their current lack of communication, since Econophysics is a developing science that will, most certain, provide new theories and models in the future years.

Keywords: Econophysics, Complexity, Interdisciplinary, ENEC.

Author: Matti ESTOLA


Abstract: We treat interest rate as the growth rate of a monetary quantity with dimension. With this definition, we can analyze time in discrete and in continuous time interest calculation in a proper manner, and the two interest rate concepts are then consistent too. We study the differences in discrete and continuous time interest and discount calculation, as well as in using different time units in discrete time analysis. We define measurable concepts corresponding to the instantaneous velocities of debt and deposit capitals, and demonstrate their usefulness in economic analysis. (JEL E40, G10).

Keywords: Discrete and continuous time interest rate, interest calculation and discounting, dimensional analysis, measurement unit.

Authors: Anna KUSMARTSEVA, Wu ZHANG, Xinyue ZHANG and F. V. KUSMARTSEV


Abstract: In this paper, the McCulloch-Pitts model built on an artificial neuron is first introduced briefly, followed by a modified model – the coupled network model to describe social opinion network in period of the presidential election. To illustrate the new model, its formalism and analytical results on fixed points will be stated step by step. Then, we investigate the dependence on the ratio of the initial conditions so that we could find out more on relationship between current information and preference on final results. Finally, U.S. election campaign in 2016 will be examined comprehensively including support rates, possible preference, time series analysis, and period analysis. Besides mathematical research, we also take real-life activities into consideration. For example, Trump used Twitter to help his view spreading and take advantage of the underlying uncertainty to some extent.

 

Author: Ioana ARMAS, Ph.D.


Abstract: The competitiveness management is one of the most important and critical process in an enterprise, that has, as a main goal, the global quality implementation according to which the enterprise becomes a leader in its external environment, and has strong implications on the markets, society, and upon the natural environment, Thus, in the context of the econobotic framework introduced and defined in [1] and specified in [2] the present paper will develop the fundamental specific operational models that will be used in the analysis and design of the enterprise’s evolution for global quality and competitiveness.
According to the TSE – space definition as the competitiveness space, the concepts and representations of the enterprise’s existence will be identified, and the models regarding competitiveness orientation and location, and actions will be developed.
The determined models represent the context for analysis and strategies design regarding the evolution of the enterprise in its complex external environment, in a manner that considers its behavior from the point of view
of competitiveness and global quality.

Keywords: econobotics, competitiveness, enterprises evolution, competitiveness
orientation, competitiveness location, econobotic actions.

Authors: Irina DMITRIEVA, Nikolay BALAN


 Abstract. Mathematical simulation of the electromagnetic field behavior in the flat guided structure is done using boundary value problem for the general wave equation with respect to all scalar components of the vector intensities. The explicit solution of given problem is suggested as well. The numerical implementation and computer modeling are also proposed.

Keywords and phrases: differential Maxwell system, mathematical and computer modeling.

Author: Eugenie POSDĂRĂSCU


Abstract: In the present paper, a genetic analysis of the distribution and compatibility of populations on Terra in Europe and in the Carpathian-Balkan-Danubian area is made, following human migrations, using Y-chromosome haplogroups (Y-DNA) and mitochondrial DNA haplogroups. For this we use the Hardy-Weinberg law, also known as the principle of genetic equilibrium. She states that the frequencies of alleles and genotypes in a population will remain constant from generation to generation in the absence of other evolutionary influences. These influences include partner selection, mutation, selection, genetic deviation, gene flow, and meiotic mechanism. This law eliminates the confusion between domination and selection. Today, tests for the frequencies of the Hardy-Weinberg genotype are mainly used to test stratification of the population and other nonrandom mating patterns.

Keywords: genetic analysis, heredity, Hardy-Weinberg law, haplogrup, Y-DNA, mtDNA, human migration, Europe, National Geographic, Carpathian-Balkan-Danube area.

Authors: Dariusz PROKOPOWICZ, Wioletta WEREDA


Abstract: Economic decisions of households are determined by current and prospective financial situation, above all, the level of income generated. Economic decisions regarding the collection of financial savings and investing them in financial instruments have been determined by the changing market environment, including the situation on the labor markets, products and services and offer financial institutions. The ability to generate savings increases when the purchasing power of income increases. Recent years have seen an increase in the surplus revenue in relation to expenditures, which enabled families to farm-leading speech-saving increase in the scale of financial surpluses. In recent years, the global-NYM financial crisis in 2008, economic conditions in the global and domestic economy's Started to gradually improve. In the same period, the income situation of households in Poland also began to improve what was also a determinant of propensity to save and invest surplus financial instruments held for investment offered by
financial institutions.

Keywords: financial surpluses, savings, savings, financial surpluses, financial situation, economic and financial situation, family, household, income, consumption, household finances, society, economic policy, financial investment instruments.

 
 
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