Voice input/output capabilities at Perception Technology Corporation

Condensed resumes of key company personnel at the Perception Technology Corporation are presented. The staff possesses recognition, speech synthesis, speaker authentication, and language identification. Hardware and software engineers' capabilities are included

Counting Hamilton cycles in sparse random directed graphs

Let D(n,p) be the random directed graph on n vertices where each of the n(n-1) possible arcs is present independently with probability p. A celebrated result of Frieze shows that if $p\ge(\log n+\omega(1))/n$ then D(n,p) typically has a directed Hamilton cycle, and this is best possible. In this paper, we obtain a strengthening of this result, showing that under the same condition, the number of directed Hamilton cycles in D(n,p) is typically $n!(p(1+o(1)))^{n}$. We also prove a hitting-time version of this statement, showing that in the random directed graph process, as soon as every vertex has in-/out-degrees at least 1, there are typically $n!(\log n/n(1+o(1)))^{n}$ directed Hamilton cycles

Fiscal Paternalism and New England Cities: A Policy for the Year 2000

The following commentary explores the future of urban public finance by focusing on the fiscal ills of New England\u27s major cities. The impact of general revenue sharing, categorical grants, federal tax policy, state aid, and own-source city revenues is assessed in light of a city\u27s ability to support itself. The authors conclude that a pattern of fiscal paternalism — the past and present policies for annual financial assistance to narrow the expenditure-revenue budget gap — must be altered if cities are to enter the twenty-first century as fiscally stable governments capable of providing the necessary services for a varied constituency

Women's Work, Women's Lives: A Comparative Economic Perspective

This chapter provides a broad overview of women's economic status in all parts of the world, with special emphasis on their position relative to men. Large differences are found among countries and regions in the size of the gender gap with respect to such measures as labor force participation, occupational segregation, earnings, education, and to a some what lesser degree the amount of time spent on housework. Two generalizations, however, hold. Women have not achieved full equality anywhere, but particularly in the advanced industrialized countries for which data on the relevant variables are more readily available, there is evidence of a reduction of gender differences in economic roles and outcomes.

Political Orientation and the Decision to Major in Economics: Some Preliminary Observations

Studies find that students major in economics for a variety of reasons. None, however, have examined students' political orientations as a possible factor in their choice of majors. Economics, as compared to other social sciences, tends to produce conservative policy recommendations. This pilot study explores whether more conservative students are attracted to economics. Our study found that men with conservative political leanings are more likely to major in economics and that male students in economics are more conservative than female students. Political orientation, however, does not appear to be a significant factor in the choice of a major for women.

On pressure and temperature waves within a cavitation bubble

The presented work is about the detailed pressure, temperature and velocity distribution within a plane, cylindrical and spherical cavitation bubble. The review of Plesset & Prosperetti (1977) and more recently the review of Feng & Leal (1997) describe the time behavior of the gas within a spherical bubble due to forced harmonic oscillations of the bubble wall. We reconsider and extend those previous works by developing from the conversation laws and the ideal gas law a boundary value problem for the distribution of temperature and velocity amplitude within the bubble. This is done for a plane, cylindrical, or spherical bubble. The consequences due to shape differences are discussed. The results show that an oscillating temperature boundary layer is formed in which the heat conduction takes places. With increasing dimensionless frequency, i.e. Péclet number, the boundary-layer thickness decreases and compression modulus approaches its adiabatic value. This adiabatic behaviour is reached at lower frequencies for the plane geometry in comparison with cylindrical and spherical geometry. This is due to the difference in the volume specific surface, which is 1, 2, 3 times the inverse bubble height/radius for the plane, cylindrical and spherical bubble respectively. For the plane bubble the analysis ends up in an eigenvalue problem with four eigenvalues and modes. The analytical result is not distinguishable from the numerical result for the plane case gained by a finite element solution. Interestingly if the diffusion time for the temperature distribution is of the order of the traveling time of a pressure wave no adiabatic behavior is observed. A parameter map for the different regimes is given. Since only the behavior of the gas within the bubble is considered the analysis is independent of the surface tension coefficient and the inertia of the surrounding liquid. For the plane bubble since there is no curvature there is no pressure change over the free surface. Despite of this a plane bubble is manly academic, since due to inertia the pressure within the fluid would have to be infinity if the liquid volume around the bubble is unbounded.http://deepblue.lib.umich.edu/bitstream/2027.42/84253/1/CAV2009-final57.pd

Labor force participation patterns and earnings of women clerical workers / BEBR No. 532

Includes bibliographical references (p. 33-34)."Few women, even today, remain in the labor market full time all their adult lives, and few give as high a priority to market work as men generally do. This paper investigates the impact of various patterns of labor force participation on the wage rate of female clerical workers, the single largest occupational category for women. It was found that while the effect of such variables as years of experience, years of hometime, percent time worked, and education is relatively modest, number of years with current employer has a large positive effect, and having been a service or blue collar worker has a significant negative effect. Over-all we conclude that a young woman who considers only the immediate effect of her labor market decisions during the early stages of her life cycle seriously underestimates their total long run results.