Dividing the spoils - pensions, privatization, and reform in Russia's transition

The authors present a political economy model in which policy is the outcome of an interaction between three actors: government (G), managers and workers (W), and transfer recipients (P). The government's objective is to stay in power, for which it needs the support of either P or W. It can choose slow privatization with little asset stripping and significant taxation, thus protecting the fiscal base out of which it pays pensioners relatively well (as in Poland). Or it can give away assets and tax exemptions to managers and workers, who then bankroll it and deliver the vote, but it thereby loses taxes and pays little to pensioners (as in Russia). The authors apply this model to Russia for the period 1992-96. An empirical analysis of electoral behavior in the 1996 presidential election shows that the likelihood of someone voting for Yeltsin did not depend on that person's socioeconomic group per se. Those who tended to vote for Yeltsin were richer, younger, and better educated and had more favorable expectations for the future. Entrepreneurs, who had more of these characteristics, tended to vote for Yeltsin as a result, while pensioners, who had almost none, tended to vote against Yeltsin. Unlike Poland, Russia failed to create pluralist politics in the early years of the transition, so no effective counterbalance emerged to offset managerial rent-seeking and the state was easily captured by well-organized industrial interests. The political elite were reelected because industrial interests bankrolled their campaign in return for promises that government largesse would continue to flow. Russia shows vividly how political economy affects policymaking, because of how openly and flagrantly government granted favors in return for electoral support. Bur special interests, venal bureaucrats, and the exchange of favors tend to be the rule, not the exemption, elsewhere as well.Public Health Promotion,Banks&Banking Reform,Municipal Financial Management,Economic Theory&Research,Environmental Economics&Policies,Economic Theory&Research,National Governance,Banks&Banking Reform,Municipal Financial Management,Health Monitoring&Evaluation

Highly Inclined Jets in Cross Flow

Results from an experimental investigation of flow field generated by pitched and yawed jets discharging from a flat plate into a cross-flow are presented. The circular jet was pitched at alpha = 20deg and 45deg and yawed between Beta = 0deg and 90deg in increments of 15deg. The measurements were performed with two -wires providing all three components of velocity and turbulent stresses. These data were obtained at downstream locations of x = 3, 5, 10 and 20, where the distance x, normalized by the jet diameter, is measured from the center of the orifice. Data for all configurations were acquired at a momentum-flux ratio J = 8. Additionally, for selected angles and locations, surveys were conducted for J = 1.5, 4, and 20. As expected, the jet penetration is found to be higher at larger alpha. With increasing beta the jet spreads more. The rate of reduction of peak streamwise vorticity, max, with the downstream distance is significantly less at higher Beta but is found to be practically independent of alpha. Thus, at the farthest measurement station x = 20, xmax is about five times larger for Beta = 75deg compared to the levels at Beta = 0deg. Streamwise velocity within the jet-vortex structure is found to depend on the parameter J. At J = 1.5 and 4, 'wake-like' velocity profiles are observed. In comparison, a 'jet-like' overshoot is present at higher J. Distributions of turbulent stresses for various cases are documented. Peak normal stresses are found to occur within the core of the streamwise vortices. With yaw, at lower values of J, high turbulence is also observed in the boundary layer underneath the jet-vortex structur

Resonance and Tones in Dual-Stream Nozzle Flows

A dual-stream nozzle configuration was studied numerically with the objective of predicting the appearance of tones and study their sources. It was found that some of the tones traced to a coupling between Strouhal shedding from the struts, which held different pieces of the nozzle together, and various duct acoustic modes. A focus of the work was on exploring the nature of the duct modes. First, elements of the numerical procedure were studied for a 4-strut nozzle, validating the results with existing experimental data. The approach was then applied to a 3-strut geometry and four different excitation methods. The predicted tones and associated duct modes are analyzed in detail

Exceptional orthogonal polynomials and exactly solvable potentials in position dependent mass Schroedinger Hamiltonians

Some exactly solvable potentials in the position dependent mass background are generated whose bound states are given in terms of Laguerre- or Jacobi-type $X_1$ exceptional orthogonal polynomials. These potentials are shown to be shape invariant and isospectral to the potentials whose bound state solutions involve classical Laguerre or Jacobi polynomials.Comment: To appear in Physics Letters

Potential algebra approach to position dependent mass Schroedinger equation

It is shown that for a class of position dependent mass Schroedinger equation the shape invariance condition is equivalent to a potential symmetry algebra. Explicit realization of such algebras have been obtained for some shape invariant potentials

Experimental and Computational Study of Tones Occurring with a Coaxial Nozzle

The source of audible tones occurring with a coaxial nozzle in a range of low Mach numbers is explored experimentally as well as computationally. The hardware is comprised of an inner and an outer nozzle, without a center-body, that are held together by a set of four struts. With increasing jet Mach number (M(sub j)), first a tone occurred at about 2550 Hz around M(sub j)=0.06. At higher values of M(sub j) a tone at 5200 Hz dominated the noise spectra. The corresponding nondimensional frequency, based on effective thickness of the inner nozzle lip and jet exit velocity, turned out to be about 0.2, a value characteristic of Karmann vortex shedding. Thus, vortex shedding from the inner nozzle lip could be linked to the tones. From a comparison of the acoustic wavelengths and the nozzle dimensions, it was inferred that the vortex shedding excited a one-quarter-wave resonance within the divergent section of either the inner nozzle or the outer nozzle. This led to the generation of the sharp tones