Demand function, economic good

Economic models are based on structural equations that explain how customers and railroads will act. The quantity of railroad service demanded by shippers of goods or passengers will be measured in ton-miles or passenger-miles respectively. The factors influencing demand are described by a demand function ... 

Fourth, the scope of the application must be bounded. There must be some specification of the functionality of the expert system and characteristics of the problems it is expected to solve. Trying to build an expert system to solve the world s economic problems is not a good application to choose. However, selecting a product mix from an oil refinery based on the current state of supply and demand in the world s energy markets might be a good application. 

It is evident that new processes are increasingly important since consumers demand more improved and novel products and there is pressure to use and upgrade cheaper raw materials. Today industrial enzymes are used in the production of diverse products such as cheese, sausages, baked goods, juices, and egg white substitutes. They are used to reduce viscosity, improve extractions, carry out bioconversions, enhance separations, develop functionality, and create or intensify flavor. Enzymes can also be very important tools for protein modification since they provide fast reaction rates, mild conditions and high specificity which lead to economic, health, and safety benefits. ... 

The regional input-output model for North Karelia is constructed from the relevant input-output statistics (Statistics Finland, 2006). An input-output model is an application of the neo-classical theory of general equilibrium to the empirical analysis of the interdependence between economic sectors, such as industries, consumption and exports, and compensations for households and imports. It was originally developed to analyze the connections between different industries within a national economy (Leontief, 1966 134), and is a useful tool for showing the structure of the economy in terms of the flows of goods and services and for analyzing the impacts of changes in flnal demand. The input-output model applied here takes as an initial assumption that industrial outputs are determined by the final demand as linear functions of inputs from other industries, labor, capital and imports. The model is written as... 

---