Conceptual Design for a Lunar-Base CELSS
Future human exploration is key to the United States National Space Policy goal of maintaining a world leadership position in space. In the past, spacecraft life support systems have used...
Artificial Gravity Research Facility Options
On a long duration manned mission to Mars, the physiological changes caused by microgravity may be counteracted by artificial gravity. This paper evaluates several different classes of...
Partial Gravity: Human Impacts on Facility Design
Partial gravity affects the body differently than earth gravity and microgravity environments. The main difference from earth gravity is human locomotion; while the main difference from...
A Design Process for Water Distribution Systems Including Optimization
Design of a water distribution system is a multi-level process from preliminary planning to final detailed sizing of components. Unfortunately as in many design problems, a final detailed...
Upgrading Hydraulic Infrastructure for Level One Redundancy
In the current paper a methodology is presented for upgrading any single source water distribution system in order to provide a level one system redundancy at a minimum cost. A level one...
Soft Bottom Low Flow Channel?A New Approach
In 1987, the City of Boulder, Colorado requested assistance from the Urban Drainage and Flood Control District (District) to repair a problem of cattails growing in the low flow portion...
The Present of GIS
A review of geographic information systems (GIS) as a spatial database is presented. Computer aided design and relational database features of GIS are explained, as well as possible types...
Environmental Permitting a Major Expressway Facility in Florida
As general consultant to the Tampa-Hillsborough County Expressway Authority, Howard, Needles, Tammen and Bergendoff (HNTB) was responsible for the environmental permitting required for...
Restoration of a Buttress Dam
Inspections of Morris Shepard Dam on the Brazos River in Texas revealed serious defects in the dam and its foundation. Piezometric pressures below the spillway buttresses greatly exceeded...
Morris Sheppard Dam: A Rational Approach to Stability Analysis
This paper details the excessive foundation piezometric conditions found during a routine five-year inspection, and presents the results of backfigured stability analysis of a critical...
A Rational Basis for Determining Safety of Containment
Design of waste containment facilities may follow one of three tacts: (1) the liner and cover systems may have prescribed components of predetermined minimum thicknesses and hydraulic...
Review of the Design, Construction, and Operation of the Lake Carolyn Flood Control Pump Station
A review of the design, construction, and initial operation of the Lake Carolyn Flood Control Pump Station in Irving, Texas is presented. Staged water resource development design concepts...
Overview of Artificial Intelligence Applications in Transportation
The purpose of this document is to provide an overview of artificial intelligence technologies, especially expert systems, as they may relate to highway engineering and operations. Included...
Managing the Introduction of New Technologies: An A1 Case Study
The way in which a new process or product is introduced into an organization can be critical to its acceptance and successful implementation. Even if the innovation is a major technical...
Creating a Transportation Microcomputer User's Group in Mid-Michigan: Organizational Issues and Opportunities
This paper describes the Mid-Michigan Transportation Microcomputer User's Group. Purposes of the User's Group include promoting demonstrations and evaluations...
Tri-County Based Travel Demand Forecasting Analyses in the Tampa Bay Area, State of Florida
This paper describes the application of the micro-computer compatible Florida Standard Urban Transportation Modeling Structure (Micro-FSUTMS) to estimate traffic volume for the purpose...
Integrated Transit Network Analysis
As part of an update of the Boston, Massachusetts regional transit simulation process, the Central Transportation Planning Staff (CTPS) has implemented a microcomputer-based integrated...
MacIntosh II True-Color Visual Simulation Project: A Proposed Elevated Rail System for Metropolitan Phoenix
Utilizing new high-resolution, 24-bit true-color technology available for the Macintosh II microcomputer, this project enabled professional consultants and the public to visualize a proposed...
Microcomputer Applications in the Development of a Traffic Operations Control Center
There is a growing need for new methods to maximize highway transportation operations, and a growing set of tools for the engineer to use in this task. This report examines one specific...
SIGNALEXPERT: An Expert Syste, for Signalized Intersection Analysis and Design
This paper presents a prototype expert system, (SIGNALEXPERT), for signalized intersection analysis and design. The SIGNALEXPERT consists of four modules. The first module determines if...
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