Real-time Monitoring of Heavy Equipment in Open Pit Mines
This paper reports on a system with local intelligence to interpret on-board signals. Existing sensors, pressure switches, warning lights, relays, and on-board monitoring systems provide...

The Role and Functions of an Analog Moon Base
Over the past two decades numerous studies, workshops and symposia have identified the rationale for and characteristics of a permanently inhabited base on the Moon. This paper discusses...

Comparisons Between Space Facilities and Earth-Based Analogs
This presentation will focus on the design of planetary bases and space stations as based on comparative designs for facilities in analogous harsh and isolated environments here on Earth....

Simulation Algorithms for Offshore Structures
A rational procedure for characterization of water depths for a random sea state is developed, in context with linearized wave theory. The importance of using the expressions for 'intermediate...

Computer Based Testing of Dynamic Response

Subdomain Integration Model of Ground-Water Flow
The subdomain numerical integration method is applied to the nonlinear one-dimensional saturated groundwater flow equation (Boussinesq equation). Because the state variable of the resulting...

Analog Model for Piles in Expansive Clay

Use of Electrical Analogs as a Design Tool for Tidal Canals

Minicomputers in Full-Scale Structural Testing
Minicomputer oriented data acquisition and data processing systems are effectively used in full-scale structural tests. Digital computer techniques have greatly augmented the existing...

Forces on Block Bodies Accelerating in Still Fluid
Experimental results for the drag coefficient and the added hydrodynamic mass coefficient for block bodies, plates, and models of deadweight anchors are presented. A unique method is examined...

Automatic Water-Level Control in South Africa
The principle of proportional, integral, and derivative sensing constitutes the theme of this paper. A study was made of the different types of control elements involved. This resulted...

Effect of Initial Base Motion on Response Spectra
The problems involved in converting earthquake ground acceleration records from analog to digital form for use in structural response calculations are widely recognized. Several different...

Convergence of Four-Point Implicit Water Wave Models
A comprehensive theoretical treatment of the convergence of the four-point implicit numerical model of shallow water waves is presented. The propagation celerity and attenuation factor...

Framework Analog for Circular Plate Bending
This technical note presents an isosceles trapezoidal model suitable for analysis of circular plates. Effect of Poisson.s ratio is included without resort to the aforementioned special...

Beam Analog for Plate Elements
A beam-analog to continuously attached elements has been established as a method for the analysis of a continuum. Although the analog grid is composed only of orthogonally connected beams,...

Hybrid Computer Model of St. Venant Equations
Hybrid computers are an important tool in scientific and engineering problem solving, yet they have received little attention to date. The St. Venant equations were solved on a hybrid...

Maximum Response Statistics for Yielding Oscillator
Results are presented from an empirical (Monte Carlo) study of the extreme values (i.e., maximum values over an interval of time) of the response of yielding oscillators excited by a random...

Convective Transport Finite Element Analog
A finite element method for solving two-dimensional steady convective heat transfer problems is presented and applied to three test cases for verification. The fully nonlinear momentum...

Grid Turbulence in Initially Turbulent Water Flow
The variations of the statistical characteristics of the axial velocity fluctuation behind grids in a water flow field with significant free-stream turbulence (FST) are determined experimentally...

Bubbly Two-Phase Flow in Hydraulic Jump
Paper reports on an experimental study of the air-entraining roller zone of hydraulic jumps in open channels. Hot-film anemometry techniques were used, involving instant digitizing of...

 

 

 

 

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