This paper studies how envelope theorems have been used in Economics, their history and also who first introduced them. The existing literature is full of them and the reason is that most families of optimal value functions can produce them. The paper is driven by curiosity, but hopefully it...

A firm's decision to engage in apprenticeship training is to a large extent determined by the cost-benefit ratio of such an investment compared to other alternatives of securing skilled workers. Empirical evidence shows that in a well-functioning apprenticeship training system, a large share of...

A firm's decision to engage in apprenticeship training is to a large extent determined by the cost-benefit ratio of such an investment compared to other alternatives of securing skilled workers. Empirical evidence shows that in a well-functioning apprenticeship training system, a large share of...

The United Nations Environment Programme (UNEP) estimated that the world would need to reduce greenhouse gas (GHG) emissions by 50?60 per cent from 1990 levels by 2050, with a future downward trajectory that is even more drastic, to have a probable chance of limiting a global temperature...

This study investigates the advantages of investing in plants for cogeneration, i.e. combined heat and power (CHP), when the heat is utilized for district heating. A focus is set on Swedish municipalities. The demand for heat is visualized in terms of load curves and duration diagrams. A...