Public Private Partnership in Social Sphere: Models Review

Growing social pressure on economy is a global trend nowadays due to constant increase of elderly population not accompanied by respective world economy growth. One of ways to respond to global challenges became new model of social & infrastructure investments called Public Private Partnership. In this article authors analyze specifics of Public Private Partnerships in social sphere and reasons why they came up to the world's agenda. Such areas as health protection, sports, education, culture, utilities are treated as social. Main goal of majority of partnerships is social as well and due to this such projects have low income rates and high risks associated. Nevertheless, in the article models of effective Public Private Partnerships are illustrated and analyzed in depth. The most promising models out of all options are selected and conclusion for the need of special tax regulation for the PPP projects is made. Keywords: problem of elderly population, effective models of social investments, Public Private Partnership (PPP) JEL Classifications: H51, H53, H54, M14, M2

Methodological Approaches to Estimation of Energy Efficiency within the Framework of the Concept of Green Economy and Sustainable Development

The transition of the world developed countries to a "low-carbon" economy and "green" economic growth leads to the fact that energy indicators are actively included in the system of environmental and economic assessments at the present stage of development. Taking into account the synergetic approach required in the analysis of energy efficiency, reflecting its impact on three main areas of activity: economic, social and environmental, we consider the index of adjusted net savings to be the final link of the World Bank's "green" indicators. Based on the analysis, it is argued that there are fundamental differences in economic policy regarding energy efficiency for different groups of countries. The experience of leading foreign countries in the field of energy efficiency is summarized, such as Germany and Japan, which occupy leading positions in the energy efficiency rating. However, the authors pay special attention to two more countries: Finland and China. Keywords: green economy, green growth, energy saving, green accounts, energy efficiency, low-carbon economy JEL Classification: Q

Structural Contradiction of Economic Growth as a Threat to the Human Capital Reproduction Process in Russia

The paper reviews the short- and long-term impact of economic growth on the human capital reproduction process. The economic growth is presented as a total of the three constituent parts: structural (potential), cyclical and conjunctural components. Based on the 1999-2013 data, the individual effect of each component of economic growth on qualitative and quantitative indicators of human capital is analyzed. It is shown that to date no conditions for economic growth in Russia through expanded human capital reproduction have been created. Keywords: Economic growth, human capital reproduction, “resource curse”, balance of the national economic system. JEL Classifications: O10, O40, E2

Analysis of magnetic neutron-scattering data of two-phase ferromagnets

We have analyzed magnetic-field-dependent small-angle neutron scattering (SANS) data of soft magnetic two-phase nanocomposite ferromagnets in terms of a recent micromagnetic theory for the magnetic SANS cross section [D. Honecker and A. Michels, Phys. Rev. B $\mathbf{87}$, 224426 (2013)]. The approach yields a value for the average exchange-stiffness constant and provides the Fourier coefficients of the magnetic anisotropy field and magnetostatic field, which is related to jumps of the magnetization at internal interfaces

Size-dependent spatial magnetization profile of manganese-zinc ferrite Mn0.2Zn0.2Fe2.6O4 nanoparticles

[EN] We report the results of an unpolarized small-angle neutron-scattering (SANS) study on Mn-Zn ferrite (MZFO) magnetic nanoparticles with the aim to elucidate the interplay between their particle size and the magnetization configuration. We study different samples of single-crystalline MZFO nanoparticles with average diameters ranging between 8 to 80 nm, and demonstrate that the smallest particles are homogeneously magnetized. However, with increasing nanoparticle size, we observe the transition from a uniform to a nonuniform magnetization state. Field-dependent results for the correlation function confirm that the internal spin disorder is suppressed with increasing field strength. The experimental SANS data are supported by the results of micromagnetic simulations, which confirm an increasing inhomogeneity of the magnetization profile of the nanoparticle with increasing size. The results presented demonstrate the unique ability of SANS to detect even very small deviations of the magnetization state from the homogeneous one.The authors acknowledge the Heinz Maier-Leibnitz Zentrum for provision of neutron beamtime. We thank Jörg Schwarz and Jörg Schmauch (Universität des Saarlandes) for the technical support with the hydraulic press and for the SEM investigations. It is also a pleasure to thank Dirk Honecker for fruitful discussions. This research was supported by the EU-H2020 AMPHIBIAN Project No. 720853. P.B. and A.M.thank the Fonds National de la Recherche of Luxembourg for financial support (CORE ANS4NCC grant).Peer reviewe

Size-dependent spatial magnetization profile of Manganese-Zinc ferrite Mn0.2Zn0.2Fe2.6O4 nanoparticles

[EN] We report the results of an unpolarized small-angle neutron-scattering (SANS) study on Mn-Zn ferrite (MZFO) magnetic nanoparticles with the aim to elucidate the interplay between their particle size and the magnetization configuration. We study different samples of single-crystalline MZFO nanoparticles with average diameters ranging between 8 to 80 nm, and demonstrate that the smallest particles are homogeneously magnetized. However, with increasing nanoparticle size, we observe the transition from a uniform to a nonuniform magnetization state. Field-dependent results for the correlation function confirm that the internal spin disorder is suppressed with increasing field strength. The experimental SANS data are supported by the results of micromagnetic simulations, which confirm an increasing inhomogeneity of the magnetization profile of the nanoparticle with increasing size. The results presented demonstrate the unique ability of SANS to detect even very small deviations of the magnetization state from the homogeneous one.The authors acknowledge the Heinz Maier-Leibnitz Zentrum for provision of neutron beamtime. We thank Jörg Schwarz and Jörg Schmauch (Universität des Saarlandes) for the technical support with the hydraulic press and for the SEM investigations. It is also a pleasure to thank Dirk Honecker for fruitful discussions. This research was supported by the EU-H2020 AMPHIBIAN Project No. 720853. P.B. and A.M.thank the Fonds National de la Recherche of Luxembourg for financial support (CORE ANS4NCC grant).Peer reviewe