Strain-Compensated AlInGaAs-GaAsP Superlattices for Highly-Polarized Electron Emission

Spin-polarized electron emission from the first superlattice photocathodes developed with strain compensation is investigated. An opposite strain in the quantum well and barrier layers is complished using an InAlGaAs/GaAsP superlattice structure. The measured values of maximum polarization and quantum yield for the structure with a 0.18 um-thick working layer are close to the best results reported for any strained superlattice photocathode structure, demonstrating the high potential of strain compensation for future photocathode applications. An analysis of the photoemission spectra is used to estimate the parameters responsible for the polarization losses.Comment: 10 pages, 2 figure

Concept of integrated management of financial flows of an investing region

In this paper, a concept of integrated management of financial flows of an investing region and associated risks has been developed. This concept includes the following areas: 1) a concept of management of financial flows, 2) a concept of management of investment flows and 3) a concept of management of investment financing risks. With a view to developing a general concept of integrated management of financial flows of an investing region, a separate new category of regional risks of financial flows has been conceived, which is an integrated index combining other regional risks, more specifically, the capital flow risk category. In the light of direct influence of market factors on management decision making by a Regional Government, this paper contains a developed concept of capital flow risk management in the region. The Regional Government, as the most informed investor, is suggested to carry out arbitrage operations both in the home market and in a market located outside the region. The obtained cash earnings must be firstly distributed in the form of additional investment resources on a competitive basis among enterprises strategically important for the region. Based on the developed concept of capital flow risk management in the region, there has been created an organizational plan for capital flow risk management in economic life on the part of executive authorities represented by the Ministry of Economic Affairs of the Nizhny Novgorod Region: 1) using the stochastic dominance method and 2) using the financial arbitrage method

The Tunka Experiment: Towards a 1-km^2 Cherenkov EAS Array in the Tunka Valley

The project of an EAS Cherenkov array in the Tunka valley/Siberia with an area of about 1 km^2 is presented. The new array will have a ten times bigger area than the existing Tunka-25 array and will permit a detailed study of the cosmic ray energy spectrum and the mass composition in the energy range from 10^15 to 10^18 eV.Comment: 3 pages, 2 figures, to be published in IJMP

Evaluating the effectiveness of public health financing based on financial and non-financial indicators in terms of the knowledge economy

In conditions of the knowledge economy human capital, human value are the main factors of economic growth and prosperity of the state. Qualitative characteristics of human capital are indicators of public health. Therefore, one of the most important tasks of the state is to assess the effectiveness of financing public health expenditures. The methodological base of the research was the methods of system and economic analysis, mathematical statistics and decision optimization, which resulted in the identification of factors influencing the resource supply, availability and quality of public health. The formation of a comprehensive indicator of the effectiveness of the public health system based on the system of financial and non-financial indicators will allow to form numerically an assessment of the effectiveness of investments in public health and draw conclusions about the resources' provision, level of development, accessibility and quality of public health. The obtained results can be used in making effective public financial decisions, which allow to achieve an increase of accessibility and quality of health care, focusing on the human capital in conditions of knowledge economy.peer-reviewe