Suggested music activities for grades one and two.

Thesis (Ed.M.)--Boston Universit

Sexual Assault Study: Differences by Age of Victim

Poster originally presented to the Anchorage Police Department and the 2004 Alaska Summit on Violence Against Women.This issue of Anchorage Community Indicators Series 2, "Sexual Assault Study," describes the spatial patterning and geographical concentration of 541 sexual assaults reported to the Anchorage Police Department in 2000–2001 by age of victim. Analysis compares the 210 victims that were less than 21 years old to the 339 victims that were 21 years old or older. Most suspects were older than their victims. On average, suspects were 5 years older than victims.This research was supported by Grant No. 2000-RH-CX-K039 awarded by the Bureau of Justice Statistics and by a UAA Faculty Development Grant to the second author.Data / Sexual assault densities by age of victim (maps) / Alcohol use (by victim; by suspect) / Race (of victim; of suspect) / Location (pick-up location; assault location) / Day of incident / Time to report / Suspect's age / Relationshi

Expansion properties of a random regular graph after random vertex deletions

We investigate the following vertex percolation process. Starting with a random regular graph of constant degree, delete each vertex independently with probability p, where p=n^{-alpha} and alpha=alpha(n) is bounded away from 0. We show that a.a.s. the resulting graph has a connected component of size n-o(n) which is an expander, and all other components are trees of bounded size. Sharper results are obtained with extra conditions on alpha. These results have an application to the cost of repairing a certain peer-to-peer network after random failures of nodes.Comment: 14 page

The Guy at the Controls: Labor Quality and Power Plant Efficiency

This paper examines the impact of individual human operators on the fuel efficiency of power plants. Although electricity generation is a fuel and capital intensive enterprise, anecdotal evidence, interviews, and empirical analysis support the hypothesis that labor, particularly power plant operators, can have a non-trivial impact on the operating efficiency of the plant. We present evidence to demonstrate these effects and survey the policies and practices of electricity producing firms that either reduce or exacerbate fuel efficiency differences across individual plant operators.

Three-Body Capture of Irregular Satellites: Application to Jupiter

We investigate a new theory of the origin of the irregular satellites of the giant planets: capture of one member of a ~100-km binary asteroid after tidal disruption. The energy loss from disruption is sufficient for capture, but it cannot deliver the bodies directly to the observed orbits of the irregular satellites. Instead, the long-lived capture orbits subsequently evolve inward due to interactions with a tenuous circumplanetary gas disk. We focus on the capture by Jupiter, which, due to its large mass, provides the most stringent test of our model. We investigate the possible fates of disrupted bodies, the differences between prograde and retrograde captures, and the effects of Callisto on captured objects. We make an impulse approximation and discuss how it allows us to generalize capture results from equal-mass binaries to binaries with arbitrary mass ratios. We find that at Jupiter, binaries offer an increase of a factor of ~10 in the capture rate of 100-km objects as compared to single bodies, for objects separated by tens of radii that approach the planet on relatively low-energy trajectories. These bodies are at risk of collision with Callisto, but may be preserved by gas drag if their pericenters are raised quickly enough. We conclude that our mechanism is as capable of producing large irregular satellites as previous suggestions, and it avoids several problems faced by alternative models.Comment: 39 pages, 12 figures, 1 table, submitted to Icaru

High Economic Values from High Peaks of the West

Resource /Energy Economics and Policy,

A note on race, ethnicity and nativity differentials in remarriage in the United States

The objectives of this study are to produce up-to-date estimates of race/ethnic/nativity differentials for remarriage and repartnership among women in the United States and to see if these differences are due to across-group differences in demographic characteristics. First, we produce lifetable estimates of remarriage and repartnering for white, black, U.S. born Latina and foreign born Latina women. Next, we estimate race/ethnic/nativity differentials for remarriage and repartnership using event-history analysis with and without controls for demographic characteristics. The results suggest a continued overall decline in remarriage rates, while many women repartner by cohabitating. Whites are more likely than blacks or Latinas to remarry and they are also more likely to repartner. Race/ethnic/nativity differentials remain even after accounting for variations in demographic characteristics. This suggests that race/ethnic/nativity differentials in remarriage and repartnering rates, rather than ameliorating disadvantages associated with divorce, reinforce these differentials.cohabitation, divorce, ethnicity, nativity, remarriage

Empirical Perspectives on Mediation and Malpractice

The use of mediation in the medical malpractice context is examined. The impact of any court-related alternative dispute resolution program is also discussed