Transient engine simulation program. NERVA program

IBM 7094 transient engine simulation program for NERV

Catalog of data summary of airglow observations obtained at Haleakala, Hawaii

The airglow studies were initiated in July 1961 in response to the discovery of unusual phenomena in the tropical airglow as observed from Algeria. Hawaii, being the southern-most area in the United States and within the tropics, and possessing high mountains with frequent clear skies well isolated from the contaminating light and dust of civilization, appeared to be an ideal location for establishing a tropical airglow station. The University of Hawaii was already developing the Mees Solar Laboratory on Haleakala on the island of Maui, so that the addition of a night sky observatory was a natural development. The collection of data covers a span of about seven and one-half years, including the minimum of the solar cycle in 1963 and just getting into the next maximum in 1968-69. It was unfortunate that financial limitations did not permit the continuation of the observations through one complete solar cycle

F-region nightglow emissions of atomic oxygen. II - Analysis of 6300 angstrom and electron density data

F-region nightglow emissions of atomic oxygen - analysis of 6300 angstrom and electron density dat

A philosophical investigation of the doctrine of Christian Science

Dissertation (Ph.D.)--Boston University, 1946. This item was digitized by the Internet Archive

The cocked hat: formal statements and proofs of the theorems

Navigators have been taught for centuries to estimate the location of their craft on a map from three lines of position, for redundancy. The three lines typically form a triangle, called a cocked hat. How is the location of the craft related to the triangle? For more than 80 years navigators have also been taught that, if each line of position is equally likely to pass to the right and to the left of the true location, then the likelihood that the craft is in the triangle is exactly 1/4. This is stated in numerous reputable sources, but was never stated or proved in a mathematically formal and rigorous fashion. In this paper we prove that the likelihood is indeed 1/4 if we assume that the lines of position always intersect pairwise. We also show that the result does not hold under weaker (and more reasonable) assumptions, and we prove a generalisation to lines

Quantum-kinetic theory of photocurrent generation via direct and phonon-mediated optical transitions

A quantum-kinetic theory of direct and phonon mediated indirect optical transitions is developed within the framework of the non-equilibrium Green's function formalism. After validation against the standard Fermi-Golden-Rule approach in the bulk case, it is used in the simulation of photocurrent generation in ultra-thin crystalline silicon p-i-n-junction devices.Comment: 12 pages, 11 figure

Atlas of zenith airglow plots obtained at Haleakala, Hawaii. Volume 1: July 1961 to December 1964

This Atlas presents zenith airglow intensities as a function of time as observed from Haleakala, Hawaii