Учительский портфолио студента-педагога
The authors present the approaches to portfolio creation as a strategy for professional development of a student-teacher, his goals, value paradigms and the range of possible structures.
The paper discusses a new approach to developing tools for quantitatively analyzing the financial behavior of small and medium price-taking traders each possessing abilities to predict share price values for a set of financial securities traded in a stock exchange. Tools for forming and managing a trader’s portfolio of securities from this set are proposed. Particularly, it is shown that when the trader can treat share price values from the portfolio as random variables with known (to her) distributions, an optimal portfolio composition is found by solving a linear programming problem. Otherwise, this optimal composition is found as the trader’s equilibrium strategy in an antagonistic two-person game with the stock exchange being the other player. In this game on polyhedra of disjoint player strategies, described by systems of linear equations and inequalities of a balance kind, calculating saddle points is reduced to solving linear programming problems forming a dual pair.
We consider a problem of optimal portfolio selection in order to track a riskless reference portfolio. The performance of controls is evaluated according to the investor’s time-preference. We investigate the stochastic optimality of the control which minimizes the expected long-run cost, providing an asymptotically upper estimate (almost surely) on difference between objective functionals corresponding to the optimal control and any admissible control strategy.
ummary: the article is dedicated to pedagogical teams, one of the historically unique traditions of children social education in Russia. The author considers pedagogical teams as a collective subject of educational activity and as a flexible social and pedagogical entity. Pedagogical teams originated in the second half of the 1960s – the beginning of 1970s. It became a mass social movement in the mid-1980s. The theoretical propositions and conclusions are based on model descriptions of V.Lantsberg and M.Kordonsky's informal associations, Russian dissertations, the practices of pedagogical teams in Kostroma, and a retrospective analysis of the author’s experience as a counselor of the Russian Children's Center "Orlyonok" and the head of pedagogical teams in Kostroma region in a span of twenty years. The article explains the ambiguity of the “pedagogical team” concept and presents four different areas of its existence, shows the variety of its activity and continuity as a social and pedagogical entity. In a metaphorical way the author characterizes the main directions and influence channels of young teacher associations on children and adolescents, particularly at different recreation camps. Presenting the pedagogical team as a living social entity, the author puts forward the hypothesis that relatively complex pedagogical tasks can be solved with very limited resources through the following channels: communication, practices and corporate culture of pedagogical groups. The article may be useful as a historical and pedagogical study helping understand the distinctive features of the Russian pedagogical practice and socio-psychological, socio-cultural mechanisms of education of children and adolescents.