Greg Hertzler

Depletion of forest resources in Sudan : intervention options for optimal control (2009)

Hassan, Rashid, Hertzler, Greg, Benhin, James K.A.

Agricultural expansion and over-cutting of trees for fuelwood are important causes of deforestation in arid and semi-arid countries such as Sudan. The consequence is increased desertification and...

Depletion of forest resources in Sudan : intervention options for optimal control (2009)

Hassan, Rashid, Hertzler, Greg, Benhin, James K.A.

Agricultural expansion and over-cutting of trees for fuelwood are important causes of deforestation in arid and semi-arid countries such as Sudan. The consequence is increased desertification and...

The impact of price and yield risk on the bioeconomics of reservoir aquaculture in north Vietnam

Petersen, Elizabeth, Hertzler, Greg, Schilizzi, Steven

A bioeconomic model of reservoir aquaculture in northern Vietnam is used to investigate the impacts of price and yield risk on the level, variability and skewness of expected net revenue and utility....

Measuring Social Welfare: A Dog’'s Hind Leg Possibility Postulate

Hertzler, Greg

Our current methods of analysing policies and the distributions of wealth insure that society is on an efficient frontier. This is not the same as a social optimum. To choose the optimal point on the...

Dynamic Contingent Valuation and Choice Modelling for Ecosystem Services

Hertzler, Greg

Non market valuation and bio economic modelling are combined in a dynamic model of ecosystem services. A mathematical proof demonstrates that the imputed price of natural capital contains all non...

COORDINATING PRODUCTION AND DISPOSAL OF COMMODITY STOCKPILES WITH APPLICATION TO AUSTRALIA'S WOOL INDUSTRY

Hertzler, Greg

Following the dismantling of a price-support program, a central bureaucracy is left with a commodity stockpile to dispose. It happened with wheat and feed grains in the U.S. in 1986 and wool in...

AN OPTIMAL CONTROL MODEL FOR INTEGRATED WEED MANAGEMENT UNDER HERBICIDE RESISTANCE

Gorddard, Russell J., Pannell, David J., Hertzler, Greg

The presence of weeds which have developed resistance to chemical herbicides is a problem of rapidly growing importance in Australian agriculture. We present an optimal control model of herbicide...

DYNAMICALLY OPTIMAL AND APPROXIMATELY OPTIMAL BEEF CATTLE DIETS FORMULATED BY NONLINEAR PROGRAMMING

Hertzler, Greg

Cattle purchasing, feeding, and selling decisions are described by a free-time optimal control model. The nutrient constraints of the National Research Council and a recently published dry matter...

Depletion of forest resources in Sudan: Intervention options for optimal control

Hassan, Rashid, Hertzler, Greg, Benhin, James K.A.

Agricultural expansion and over-cutting of trees for fuelwood are important causes of deforestation in arid and semi-arid countries such as Sudan. The consequence is increased desertification and...