In This Paper We Present and Implement an Econometric Test of Both Negative Semi-Definiteness of the Matrix of Compensated Price Effects and of the Negative Quasi-Definiteness of the Matrix of Uncompensated Price Effects. This Test Allows Us to Evaluate Two Alternative Characterizations of...

We Develop a Model of the Demand for Gasoline in West Germany. Explanatory Variables Belong to Seven Principal Classes Prices, Vehicle Availability and Characteristics, Infrastructure Characteristics and Regulation, Weather, Income, Final and Intermediate Economic Activities, and Other. the...

Applications of Aggregate Spatial Direct Demand Models to Interzonal Urban Transportation Are Not Frequently Found in the Literature. This Is No Doubt Due to the Difficulties Encountered in Calibrating Such Models. They Are Therefore Seldom Used by Researchers. the Purpose of This Paper Is to...

It Is Possible to Think of Numerous Economic Problems Involving Dynamic Constrained Optimization Where Dual Representation Exist and Possibly Can Be Characterized. One Example Arises in the Theory of Dynamic Factor Demand And, More Generally, Investment Decisions. Its Duality Structure Has Been...