Baysian Updating of Trip Generation Parameters
The use of borrowed models from similar urban areas is one way of reducing the costs associated with conducting full-scale travel surveys. However, in order to tune borrowed models to...

The Fly-Over: A View From Both Sides
An examination of European and U.S. information available of fly-overs shows that they are not low-cost permanent solutions for congestion and safety problems at urban and rural intersections....

Measurement of Air in Flowing Water
Procedures are developed using gamma ray and hot-film anemometer methods for determining void fraction and sizes of air bubbles entrained in flowing water. The hot-film data are analyzed...

Cost-Benefit Analysis, Has Its Time Come and Gone?

Low-Cost Satellite Digital Image Analysis of Surface Waters

RPI's Mighty Goal: To Help Rejuvenate American Industry
During the past few decades, many U.S. engineering schools have become obsessed with engineering science and have seemed to lose interest in practical, industrial problems faced by American...

What's Wrong with U.S. Transportation Infrastructure—
Federal spending for public works is being cut back. State, county and city administrations will have to bear a larger share of the load. In the case of railroads, in some areas, track...

The 55-mph Speed Limit: A Review
Since the implementation of the 55-mph speed limit in 1973 and 1974, the impact of the reduced limit on highway safety has been the subject of considerable discussion. The assessment of...

Organic Material and Soil Compressibility
Compression tests on model organic soils have shown that higher organic fractions significantly increase soil compressibility. Precise control over organic content, fiber type and size,...

Pivot Point Modeling Procedures in Demand Estimation
Estimation of charges in travel demand is usually a prerequisite to assessing the costs and benefits associated with such policies. Pivot point technique, using an incremental logit model,...

Combined Vegetative-Structural Slope Stabilization
Vegetation in partnership with structural measures provides an attractive and cost effective method of stabilizing slopes and combating erosion. An effective approach is to use contour...

Solar Energy for Heating Homes: How Practical—
There is a widespread belief that on-site solar energy for heating homes is still not a proven technology and that, in any event, it's much too expensive. The fact is that...

U.S. Water Policy: Putting the Lid on the Pork Barrel
Federal water policy is undergoing a significant change, both in the way projects are developed and approved and in the kinds of water problems addressed. The Congress and the Executive...

The Zero-Energy House: The Bold Low-Cost Breakthrough that may Revolutionize Housing
The world is in the early stages of a revolution in housing. About 200 houses have already been built in Canada that use under $125/yr for electric-resistance space heating — even where...

The Fly-Over: It Unclogs Urban Traffic in A Hurry
Fly-overs are light-weight, low-cost, prefabricated steel structures that elevate only one or two lanes over a traffic-choked city intersection but dramatically reduce congestion. By removing...

Notched Trusses Give Low-Cost Conversion of Hangars for Jumbo Jets
Physically notching the structural members in a hangar roof solved the problem of moving new DC-10 aircraft into and out of maintenance hangars built for smaller, earlier-generation commercial...

Study in Physical Theory of Expansiveness in Clays

Observations for Low-Cost Shore Protection
The purpose of this note is to outline some of the practical results of the research program on low-cost shore protection in regard to the evaluation of field observations and effective...

Constitutive Model for Short-Time Loading of Concrete
A constitutive model based on nonlinear elasticity is proposed, where the secant values of Young's modulus and Poisson's ratio are changed appropriately. This...

Resilient Response of Two Frozen and Thawed Soils
Values of resilient modulus and Poisson's ratio were determined for silt and clay subgrade materials subjected to seasonal freezing and thawing. A new technique employing...

 

 

 

 

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