CP-ALL and the Case of Value Web Creation

How should convenience store operators like Thailand’s CP-ALL construct its value chains? What does economic theory teach us about an under-modelled area of management theory (namely value chains)? In this paper, we use a seemingly unrelated economic model analysing Vietnam to tell us something about the conglomerates running convenience stores licenses like CP-ALL. We find that convenience stores may not want to raise capital from Thai banks and the Bangkok stock market when labour productivity exceeds capital’s. We also find that inefficiencies inherent in Thai markets may significantly reduce the optimal size of a convenience store operator like CP-ALL. These operators may also (counter-intuitively) need to give up a significant share of their profits to “value service providers” when the cost of capital falls. As such, counter to the usual World Bank nostrums, improvements in Bangkok’s stock market and banks may actually hurt firms like CP-ALL.preprin

Investigation of a laminar boundary layer on a horizontal continuously moving plane surface in the presence of a cocurrent flow

O.G.Martynenko, V.N. Korovkin (Połock State University)On the basis of the stationary laminar boundary layer equations, an analysis of the external flow effect on the characteristics of the boundary layer of a continuously moving flat plate is carried out. Numerical and approximate analytical solutions of the problem have been obtained for different vol-ues of the parameter e, which characterizes the ratio of the velocities of the moving plate and cocur-rent flow. Correlation dependences have been constructed for determining the boundary-layer thickness and flow shear on the body surface.= На основе стационарных уравнений ламинарного пограничного слоя, анализ внешнего эффекта потока на характеристики пограничного слоя непрерывно движущейся плоской пластины осуществляется. Вычислительные и приближенные аналитические решения задачи были получены для различных Vol-ниях параметра е, характеризующего отношение скоростей движущейся пластиной и cocur-аренду потока. Корреляционные зависимости были построены для определения толщины пограничного слоя и сдвига потока на поверхности тела

Toward calculation of free-convective motion of liquid over a linear heat source

Представлены результаты аналитического и численного исследования ламинарного свободного конвективного движения жидкости по линейного источника тепла. Характерные черты скорости и температурного поля как функции параметра плотности и числа Прандтля были изучены. Таблица численных решений даны. Мартыненко О.Г., Коровкин В.Н. (Полоцкий государственный университет). O.G.Martynenko, V.N. Korovkin (Połock State University)The results of an analytical and numerical investigation of a laminar free-convective motion of liquid over a linear heat source are presented. The characteristic features of velocity and temperature field as functions of the density parameter and Prandtl number have been studied. A table of numerical solutions is given. Połock State University

Computational-theoretical investigation of buoyant jet flows

The results of mathematical simulation of fully developed plane buoyant jet flows are presented. The solution is found within the framework of the model of a laminar boundary layer in the Boussinesq approximation using the method of matched asymptotic expansions. Analytical dependences of the basic characteristics of a jet flow on the Prandtl number and density parameter have been constructed

On determination of the basic characteristics of free convective heat exchange near a flat vertical surface

Представлены результаты математического моделирования свободного конвективного теплообмена около полубесконечной, непроницаемой, плоской вертикальной поверхности. Были изучены особенности полей скорости и температуры как функции граничных условий и числа Прандтля. Даны таблицы численных решений в esults Полученные данные были в сравнении с численными данными других авторов. O.G.Martynenko, V.N. Korovkin (Połock State University)The results of mathematical modeling of free convective heat exchange near a semiinfinite, impermeable, flat vertical surface have been presented. The features of velocity and temperature fields as functions of the boundary conditions and the Prandtl number have been studied. Tables of numerical solutions have been given. The esults obtained have been compared to the numerical data of other authors

Application of the method of asymptotic expansions for analyzing free-convection jet flows

From the viewpoint of the laminar boundary layer theory, by the method of internal and external asymptotic expansions the self-similar problem on the development of a plane free-convective jet at a quadratic temperature dependence of the density has been solved. Analytical dependences of the main characteristics of the jet flow on the Prandtl number, convenient for engineering calculations, have been obtained

Swirling convective jets: asymptotic analysis

Results of solution of the problem of a swirling convective jet propagating over a point heat source on the basis of the equations defining a laminar boundary layer in the Boussinesq approximation are presented. The cases of steady circulation of the azimuthal velocity component of the fluid flow at infinity and the angular momentum of the fluid relative to the axis of the jet were considered. The two variants of the problem were asymptotically analyzed, and corresponding boundary problems were formulated for the principal terms of the expansion of desired functions. The dependences of the velocity and temperature fields on the Prandtl number were determined. Analytical solutions and detailed tables of numerical-analysis data are given

Assessment of quartz materials crystallinity by x-ray diffraction

The estimated degree of crystallinity of natural and synthetic grown quartz and quartzite by calculating the x-ray diffraction patterns. It is shown that the index of crystallinity of natural quartzite varies widely, reflecting the different degree of their transformation. The highest values of the index of crystallinity are characterized natural and synthetic single crystals of quartz

Education as a condition for social wel-being of human

This article touches upon the idea of new educational models which are a guarantee of social well-being. We argue that a classical model of university should necessarily go through a series of changes due to many objective reasons. Contemporary epistemology is symbolizing renaissance. Nowadays knowledge is transformed into information. Hence, information may be interpreted as that, what changes us or as past experience. We bring to the attention different educational models such as: a model of world-class university, an elitist model, a mass model, a two-level model, a networking model, a university of the third age. University is more and more involved in solution of many problems of modern world such as, training of specialists, social elite education, and provision of universal level of education. We also argue that the key task of educational process now is pragmatic values formation instead of the development of inner world of a person through educational process. There are new criteria for understanding the level of developing society. We put particular emphasis and consider the educational model of lifelong learning as one that gives the opportunity to students of different ages to study in various fields of science. This is unlimited research process the sense of which is to find truth, discover new form of knowledge during whole life-time