Thermomechanical effects in high-speed seal rubs

The analytical effort was aimed at development of numerical model of thermal and mechanical phenomena which occur during seal rub. Finite element programs were develped for studying the temperatures that result from frictional heating during rubs, and the plastic deformation which is caused by rub forces. The experiment phase was originally intended to aid in verification of the results of the analytical model. Experimental techniques were developed for measuring surface temperatures and deformations during single pass rubs. Modifications were made to the device to permit testing at both high and cryogenic temperatures. The results from the experiments are discussed

A Culture of Mismanagement: Environmental Protection and Enforcement at the New York City Department of Environmental Protection

In April of 1997, far-reaching regulations aimed at the protection of New York City\u27s (City\u27s) drinking water supply went into effect. The Watershed Agreement was reached after more than two years of delicate negotiations by the City, the Coalition of Watershed Towns, the State of New York, the Environmental Protection Agency and a handful of environmental groups. Under this celebrated compromise, the City will spend $1.2 billion to protect its water supply at its source, rather than construct a physically massive and extraordinarily expensive filtration plant that would be required by the federal government under the Safe Drinking Water Act. If the Watershed Agreement is to succeed, however, the New York City Department of Environmental Protection (DEP)-the City agency charged with the duty to implement Watershed protection and enforce the new regulations-must fundamentally reform itself. Presently, Watershed protection is hampered by a toothless enforcement regime with conflicting departmental objectives. This Article examines the institutional culture of mismanagement that plagues the DEP, which jeopardizes the water quality and health of nine million consumers

Attacking the Weakest Link: The Anti-Support Role of Soviet Naval Forces

Communications and navigation facilities, tenders, missile transport and storage facilities, supply ships, fixed acoustic arrays, cargo handling facilities, and the like are more susceptible to destruction than the weapons systems to whose support they are dedicated

The Evolution of Soviet Thought on Warfare in the Fourth Dimension

A number of authors lately have expressed proper concern about thereadiness of the US Navy to conduct warfare in a dimension other than the three conventional media: sea, air, and land.\u27 This additional dimension, the electromagnetic spectrum, is as vital a battlefield in wartime as any of the other three, perhaps even more so. While Americans have consistently been in the forefront of the technical development of electronic warfare (EW) equipment, we have not, at the same time, been quick to exploit its operational utility across the entire spectrum of warfare

Practitioners or Researchers: Ed.D. or Ph.D.? An Analysis of Educational Leadership Doctoral Programs

This mostly descriptive study was conducted to analyze differences in doctoral degrees in educational leadership programs across the United States based on U.S. News and World Report (2011) rankings for Graduate Schools of Education. Specifically, this study explored admission, program, and final requirements as well as curriculum and faculty roles to determine the trends that have been evolving, increasing, decreasing, or remaining consistent in certain schools of the United States since the release of the Levine study of educational leadership programs in 2005. Five groups were used: 1) higher ranked 20; 2) lower ranked 20 graduate education schools; 3) top 10 schools in the educational leadership specialty; 4) Ph.D. programs and 5) Ed.D. programs overall. The researcher collected data for each variable from program websites and representatives as well as supplemental information that was mailed or emailed to create a profile for each program. The researcher analyzed the data and concluded that reform has been slow to occur if at all; however, true reform could benefit future doctoral candidates in educational leadership, programs offering these degrees, and student success in education at large

Soviet Doctrine on the Role of the Aircraft Carrier

At the close of World War II, the combined fleets of the United States and Great Britain included over 115 aircraft carriers with a total capacity of some 6,700 aircraft. Typifying their strength was the U.S. Navy\u27s Task Force 38, operating off Japan from 10 July through 15 August 1945. Because carrier airpower had already contributed greatly to the destruction of the Japanese Fleet, this force was free to operate within 100 miles of the coast. Aircraft from the task force proceeded to devastate Tokyo and ranged across the Japanese countryside attacking targets of opportunity virtually at will