Economic Benefits from Biking Trails and Greenways

The Economic Benefits from Immigration

T he rapid increase in the size of the immigrant flow reaching the United States, the major changes in the national origin composition of the immigrant population, and the decline in the skills of immigrants relative to the skills of native workers have rekindled the debate over immigration policy. The current debate revives the old concerns over immigrants "taking jobs away" from native worker...

Economic Benefits from Technological Innovation in Microelectronics

Economic Efficiency and the Distribution of Benefits from College Instruction*

Economic efficiency implies an equating, at the margin, of benefits and costs. In this paper we explore a concept of "efficiency" which is broader than the usual framework and which applies to commodities and services produced and distributed largely outside the private, profit maximizing sector. An assessment of the economic efficiency of producing such a commodity requires the determination o...

Economic and Social Benefits from Wave Energy Conversion Marine Technology

This paper summarizes the energy resource, the energy conversion technology, and the economic and social benefits of using wave energy technology. The Electric Power Research Institute (EPRI) estimates that the U.S. wave resource potential that could credibly be harnessed is about 6.5% of the 2004 U.S. national electricity energy demand (the total 2004 demand was about 4,000 TWh). Wave energy c...

Biking Without Pedaling

It is well known that skilled bicycle riders can balance and propel themselves forward using motions of the handlebar. We present the complete nonlinear dynamics and control of such a pedal-less bicycle with a rider. Propulsion is achieved not by pedaling but by a cyclic motion of the steering axis of the bicycle. It is shown that this kind of actuation results in net forward motion of the bicy...