because of the heterogeneity in behavior, in the real world prices may deviate substantially and persistently from their fundamental values. of course, if these heterogeneous elements play a rather minor role then asset prices and rates of return will be determined mainly by economic fundamentals and rational behavior. by observing actual behavior in the stock market one can seek to isolate pro...

Machine learning has experienced great success in many applications. Precipitation is a hard meteorological variable to predict, but it strong impact on society. Here, machine-learning technique—a formulation of gradient-boosted trees—is applied climate seasonal precipitation prediction over South America. The Optuna framework, based Bayesian optimization, was employed determine the optimal hyp...

A river flow regime describes an average seasonal behaviour of flow and reflects the climatic and physiographic conditions in a basin. Differences in the regularity (stability) of the seasonal patterns reflect different dimensionality of the flow regimes, which can change subject to changes in climate conditions. The empirical orthogonal functions (EOF) approach can be used to describe the intr...

Thoroughbred horses are seasonal mating animals, raised in northern regions or countries. Foals born yearly in spring generally show a typical seasonal compensatory growth pattern, in which their growth rate declines in the first winter and increases in the next spring. In this study, a new empirical adjustment approach is proposed to adjust for this compensatory growth when growth curve equati...

Examining climate-related satellite data that strongly relate to seasonal phenomena requires appropriate methods for detecting the seasonality to accommodate different temporal resolutions, high signal variability and consecutive missing values in the data series. Detection of satellite-based Land Surface Temperature (LST) seasonality is essential and challenging due to missing data and noise i...

OBJECTIVES The aim of the study was to find out the approach of students to vaccination against seasonal influenza, how they perceived risk associated with influenza pandemic, and whether the pandemic influenced their approach to vaccination against seasonal flu. METHODS Data collection was conducted through an anonymous questionnaire survey. Distribution and collection of questionnaires took...

We view match as an operator that takes two graph-like structures (e.g., classifications, XML schemas) and produces a mapping between the nodes of these graphs that correspond semantically to each other. Semantic matching is based on two ideas: (i) we discover mappings by computing semantic relations (e.g., equivalence, more general); (ii) we determine semantic relations by analyzing the meanin...

Interpretation of artificial intelligence on the base of the philosophical fictionalism allowed discussing the educational technologies in the context of conditions for strengthening of discursive power of pupils’ thought. The artificial intelligence received broad interpretation as an embodiment of a literary image, which did not have unambiguous link with the area of logical formalisms and ma...

In this thesis we prove the existence of m-armed spiral wave solutions for the complex Ginzburg-Landau equation in the circular and spherical geometries. Instead of applying the shooting method in the literature, we establish a functional approach and generalize the known results of existence for rigidly-rotating spiral waves. Moreover, we prove the existence of two new patterns: frozen spirals...