The self-consistent field model for Fermi systems with account of three-body interactions

On the basis of a microscopic model of self-consistent field, the thermodynamics of the many-particle Fermi system at finite temperatures with account of three-body interactions is built and the quasiparticle equations of motion are obtained. It is shown that the delta-like three-body interaction gives no contribution into the self-consistent field, and the description of three-body forces requires their nonlocality to be taken into account. The spatially uniform system is considered in detail, and on the basis of the developed microscopic approach general formulas are derived for the fermion's effective mass and the system's equation of state with account of contribution from three-body forces. The effective mass and pressure are numerically calculated for the potential of "semi-transparent sphere" type at zero temperature. Expansions of the effective mass and pressure in powers of density are obtained. It is shown that, with account of only pair forces, the interaction of repulsive character reduces the quasiparticle effective mass relative to the mass of a free particle, and the attractive interaction raises the effective mass. The question of thermodynamic stability of the Fermi system is considered and the three-body repulsive interaction is shown to extend the region of stability of the system with the interparticle pair attraction. The quasiparticle energy spectrum is calculated with account of three-body forces.Comment: 21 pages, 5 figure

Growing apart? Partisan sorting in Canada, 1992–2015

Recent decades have been marked by increasingly divided partisan opinion in the US. This study investigates whether a similar trend might be occurring in Canada. It does so by examining redistributive preferences, using Canadian Election Studies data from every election since 1992. Results suggest that Canada has experienced a surge in partisan sorting that is comparable to that in the US. Over time, like-minded citizens have increasingly clustered into parties, with increasingly stark divisions between partisans

It's (Change in) the (Future) Economy, Stupid: Economic Indicators, the Media, and Public Opinion

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/111207/1/ajps12145-sup-0001-text.pdfhttp://deepblue.lib.umich.edu/bitstream/2027.42/111207/2/ajps12145.pd

Theoretical and methodological foundations for identifying and assessing the economic stability of enterprises

На основі критичного аналізу та узагальнення існуючих вітчизняних та зарубіжних поглядів до трактування категорії «економічна стабільність підприємства» проаналізовано дефініцію даного поняття. Також в статті розглянуто суть поняття економічної стабільності підприємств та її складових. Зокрема, встановлено зв'язок між поняттями «економічна стабільність», «фінансова стійкість» та «економічна стійкість». Наведено практичні аспекти оцінки економічної стабільності підприємств, які базуються на основі емпіричних досліджень. Обрано методичний підхід щодо визначення інтегрального показника рівня економічної стабільності, що надає можливість оцінити рівень економічної стабільності підприємств та визначити організаційно-економічні чинники підвищення ефективності їх функціонування. Проаналізовано основні показники економічної стабільності та їх вплив на узагальнений показник, а саме, економічна безпека, фінансова стабільність, маркетингова стабільність, соціальна стабільність.Based on the critical analysis and synthesis of existing domestic and foreign views to the interpretation of the category of "economic stability of enterprise" analyzes the definition of this concept. Also in the article the essence of the concept of sustainability and its constituent companies. In particular, the connection between the concepts of "economic stability", "financial stability" and "economic stability." The practical aspects of assessing the sustainability of businesses that are based on empirical research. Chosen methodical approach to determine the integral index of economic stability that allows you to assess the level of sustainability of enterprises and to determine the organizational and economic factors improve their functioning. The basic indicators of economic stability and their impact on the general index, namely, economic security, financial stability, marketing stability, social stability

Radiation chemistry provides nanoscopic insights into the role of intermediate phases in CeO₂ mesocrystal formation

The role of intermediate phases in CeO2 mesocrystal formation from aqueous Ce(III) solutions subjected to gamma-radiation was studied. Radiolytically formed hydroxyl radicals convert soluble Ce(III) into less soluble Ce(IV). Transmission electron microscopy (TEM) and X-ray diffraction studies of samples from different stages of the process allowed the identification of several stages in CeO2 mesocrystal evolution following the oxidation to Ce(IV): (1) formation of hydrated Ce(IV)-hydroxides, serving as intermediates in the liquid-to-solid phase transformation; (2) CeO2 primary particle growth inside the intermediate phase; (3) alignment of the primary particles into "pre-mesocrystals" and subsequently to mesocrystals, guided by confinement of the amorphous intermediate phase and accompanied by the formation of "mineral bridges". Further alignment of the obtained mesocrystals into supracrystals occurs upon slow drying, making it possible to form complex hierarchical architectures

Migration and welfare state spending

Is international migration a threat to the redistributive programmes of destination countries? Existing work is divided. This paper examines the manner and extent to which increases in immigration are related to welfare state retrenchment, drawing on data from 1970 to 2007. The paper makes three contributions: (1) it explores the impact of changes in immigration on social welfare policy over both the short and medium term; (2) it examines the possibility that immigration matters for spending not just directly, but indirectly, through changes in demographics and/or the labour force; and (3) by disaggregating data on social expenditure into subdomains (including unemployment, pensions, and the like), it tests the impact of immigration on different elements of the welfare state. Results suggest that increased immigration is indeed associated with smaller increases in spending. The major pathway is through impact on female labour force participation. The policy domains most affected are ones subject to moral hazard, or at least to rhetoric about moral hazard

The prerequisites for the formation and use of labor potential of the region

В статті наведено різні погляди на категорію «трудовий потенціал». Охарактеризовано складові передумов формування та використання трудового потенціалу регіону.В статье рассмотрены различные взгляды на категорию» трудовой потенциал». Даны характеристики составляющих предпосылок формирования и использования трудового потенциала региона.The article presents different views on the essence of labor potential. Characterized the components of the prerequisites for the formation and use of labor potential of the region