Implicit-Explicit Formulations of a Three-Dimensional Nonhydrostatic Unified Model of the Atmosphere (NUMA)

2013 ◽  
Vol 35 (5) ◽  
pp. B1162-B1194 ◽  
Author(s):  
F. X. Giraldo ◽  
J. F. Kelly ◽  
E. M. Constantinescu
Keyword(s):  
Three Dimensional ◽  
Unified Model

scholarly journals 3.28. Three-dimensional distribution of the nuclear mirrors in NGC 1068

1998 ◽  
Vol 184 ◽  
pp. 145-146
Author(s):  
Makoto Kishimoto
Keyword(s):  
Active Galactic Nuclei ◽  
Three Dimensional ◽  
Galactic Nuclei ◽  
Unified Model ◽  
Uv Imaging ◽  
Dimensional Distribution ◽  
Imaging Polarimetry ◽  
Ngc 1068

Recently, the HST imaging observations have revealed that the central arc second region in NGC 1068 has a clumpy structure (Macchetto et al., 1994) and the HST UV imaging polarimetry has revealed the centrosymmetric pattern of the position angles of polarization (Capetti et al., 1995), which indicates that the medium in this region is actually scattering the radiation from a small source, in accordance with the unified model of active galactic nuclei (Antonucci & Miller, 1985).

A UNIFIED MODEL AND METHODOLOGY FOR TEMPORAL OBJECT DATABASES

1993 ◽  
Vol 02 (02) ◽  
pp. 201-223 ◽  
Author(s):  
NIKI PISSINOU ◽  
KIA MAKKI
Keyword(s):  
Information Systems ◽  
Geographic Information Systems ◽  
Three Dimensional ◽  
Geographic Information ◽  
Unified Model ◽  
Space Model ◽  
Database Visualization ◽  
Temporal Object ◽  
Object Databases ◽  
And Robotics

This paper identifies, explores and provides an approach to handling temporal information in object databases. It specifically involves the design and development of the Temporal Three Dimensional Information Space model that integrates time with objects. The model is based on a small number of simple temporal object constructs and provides a user with the basic primitives for temporal object definition, manipulation and retrieval. This research presents a step towards defining the concepts and techniques for incorporating time in object databases, and provides concrete experimental framework for demonstration thereof. Target Application environments include management and geographic information systems, database visualization and robotics.

Unified Model for Ballistic Transport and Gas-Solid Reactions in Features

1990 ◽  
Vol 204 ◽  
Author(s):  
T. S. Cale ◽  
G. B. Raupp ◽  
T. H. Gandy
Keyword(s):  
Surface Diffusion ◽  
Ballistic Transport ◽  
Three Dimensional ◽  
Low Pressure ◽  
Unified Model ◽  
Governing Equations ◽  
Adsorbed Species ◽  
Molecular Velocity ◽  
Patterned Wafers

ABSTRACTThe three dimensional equations which govern free molecular or ballistic transport and heterogeneous gas-solid reactions in features on patterned wafers during low pressure processing are reviewed. The governing equations specific to long rectangular trenches are extended to include nonuniform molecular velocity distributions in the source volume above the wafer as well as surface diffusion of adsorbed species or intermediates. Introduction of reaction stoichiometries and kinetic expressions for general deposition and etch reactions completes the specification of the problem. Local generalized sticking factors arise in the process of nondimensionalizing the governing equations.

The orbit of Pluto over a long interval of time

1966 ◽  
Vol 25 ◽  
pp. 227-229 ◽  
Author(s):  
D. Brouwer
Keyword(s):  
Periodic Orbit ◽  
Numerical Integration ◽  
Restricted Problem ◽  
Three Dimensional ◽  
The Third ◽  
Circular Restricted Problem ◽  
Resonance Relation

The paper presents a summary of the results obtained by C. J. Cohen and E. C. Hubbard, who established by numerical integration that a resonance relation exists between the orbits of Neptune and Pluto. The problem may be explored further by approximating the motion of Pluto by that of a particle with negligible mass in the three-dimensional (circular) restricted problem. The mass of Pluto and the eccentricity of Neptune's orbit are ignored in this approximation. Significant features of the problem appear to be the presence of two critical arguments and the possibility that the orbit may be related to a periodic orbit of the third kind.

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