Evaluating Earthquake Hazards
Earthquake hazards vary considerably in different parts of the country. The effect of an earthquake on telecommunication systems is influenced by the magnitude of the earthquake, the proximity...
Wireless System
The technology of using radio frequencies to communicate is not new. Ham radio and walkie talkies were the first form of radio communication used by the public; then the Citizen Band (CB)...
Assessing Opal's Impact
Geographic information systems and other high-technology tools were used to quantify the effects of Hurricane Opal in October 1995. The Federal Emergency Management Agency, along with...
Communication Breakdown
Are modern telecommunications networks vulnerable to earthquakes? Researchers say yes, and have developed a computer tool to quantify potential economic impacts. Telecommunications service...
Water Wisdom of the Ancients
Two water systems thousands of years old--the falaj system in Oman and China's Dujiangyan water works--are still in use today. A climatologist describes how these systems...
Structural Aerodynamics (Available only in
One of the most strikingly ambitious public buildings in France, county governmental headquarters in Marseille, achieves the status of world-class architecture largely through its structural...
A Gatehouse for Johnson
Philip Johnson's latest addition to his eclectic collection of architectural designs on his Connecticut property is a radical departure from his famed Glass House. Builders...
Spotlight on Steel Moment Frames
Engineers' confidence in moment connections was shattered when damage was discovered after the 1994 Northridge earthquake. Such connections are now a hot subject for U.S....
Perfecting Bridge Inspecting
The Massachusetts Highway Department has improved the safety of its bridges and increased its productivity by using networked multimedia to gather and store a variety of data about bridges...
Fracturing for In-situ Bioremediation (Available only in
A pilot-scale evaluation of an integrated pneumatic fracturing and bioremediation system demonstrated the enhanced removal of BTX from a gasoline-contaminated, low-permeability soil formation....
Hydroelectric Pumped Storage Technology
International Experience
This Committee report,
Intelligent Transportation Education
The comprehensive traffic surveillance study for the New York State Thruway Authority (NYSTA) began in late September 1993. The project involved the study of available traffic management...
Asphalt Update
Of the $150 million spent in the five-year Strategic Highway Research Program (SHRP), $50 million went to research to improve the durability and cost-effectiveness of asphalt pavements--on...
Pavement Management Pays Off
Pavement Management Systems are paying off at various agencies from municipal to state levels. Its PMS consultant enabled the city of Oakland, Calif. to convince FEMA to pay for indirect...
Alternatives for Managing Shallow Ground Water in Arid Irrigated Areas
The combined operation of a drainage system for subirrigation and drainage is being considered for application in arid areas of the world. This is accomplished by modifying an irrigation...
An Extended Relaxation Technique for Unsteady Flows in Networks
A recent enhancement to the FLD WAY model is the addition of an extended relaxation technique for modeling unsteady flows in a dendritic (tree-type) network of channels with tributaries...
Genetic Algorithm Design of Piped Irrigation Systems
The design of piped irrigation systems is a complex matter. In its simplest form it involves the selection of the sizes of pipes and other hydraulic elements so as to ensure that the varying...
Agroforestry as a Method of Salt and Selenium Management on Irrigated Land in the San Joaquin Valley
Since 1985, several San Joaquin Valley growers, with the support of State and federal agencies, have attempted to manage salt and selenium using agroforestry. Numerous studies and research...
Water Quality Improvement Program in Ventura County at Port Hueneme
Integrated resource planning (IRP) has been used successfully by several larger water utilities to resolve complex water supply issues. This paper describes the experience of a smaller...
The Scour at Bridges Management Program in Rhode Island
The Rhode Island Department of Transportation (RIDOT) has developed and implemented a comprehensive two-phase scour susceptibility program for screening and assessment of scour at bridges....
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