For the economic sciences, mainly for the planning and organization disciplines, the models display a range of varieties. For the last decades, though, the mathematics-based models seem to be the trend, partly because of their ability to rigorously concentrate the essentials and also to be...

The standard economic model for analyzing traffic congestion, due to A.A. Walters, incorporates a relationship between speed and traffic flow. Empirical measurements indicate a region, known as hypercongestion, in which speed increases with flow. We argue that this relationship is unsuitable as...

Fruit production and consumption have increased considerably in the past few decades in Taiwan. Market prices of fruits fluctuate in response to seasonality, changes in production costs, imports and exports, and demand. Some factors are more influential to fruit price changes. This research...

Empirical estimates of long run effects on residential electricity demand from changes in the electricity price are usually estimated by cross-sectional variation in the current stock of electric household appliances across households at a certain point in time. Here, we use a...

Empirical estimates of long run effects on residential electricity demand from changes in the electricity price are usually estimated by cross-sectional variation in the current stock of electric household appliances across households at a certain point in time. Here, we use a...

Users have proven to be a principal driving force of many innovations in different industries. Therefore, more and more firms try to identify avenues to systematically involve users into their new product development. Despite the growing interest in user-driven or user-centred innovation, both...