Producing work schedules for airline crew normally results in individually different schedules. Some airlines do however want to give the same schedule to groups of people. The construction of such groups must respect certain rules, provide a good matching of certain factors and fit well into the normal process of producing anonymous trips starting and ending at the home base and assigning thes...

We study the cyclical effects of the timing of durable goods purchases in a general equilibrium model in which both durable and non-durable goods are consumed and the durable good is lumpy. At the microeconomic level, the timing of durable goods purchases supplies some insulation for nondurable consumption over the cycle. At the macroeconomic level, the timing decisions tend to amplify and prop...

In this article the attempt to examine the effects of tax policy in the framework of two-sector model with factor markets and intermediate goods is considered. In this connection the difference between intermediate and final goods is introduced. Model was extended to introduce the imported and domestic intermediate goods and production functions to produce domestic goods and exports. The basic ...

In defined contribution pension schemes, the financial risk is borne by the member: contributions are fixed in advance and the benefits provided by the scheme depend on the investment performance experienced during the active membership and on the price of the annuity at retirement, in the case that the benefits are given in the form of an annuity. Therefore, the financial risk can be split int...

In resource accounting, shadow prices of natural resources and environmental effects should be used as the social marginal value of goods. Since it is difficult to measure shadow prices in practice, market prices are often used as proxies for shadow prices. A prerequisite for the use of these proxies is that there is an established relationship between size of the natural resource stock of inte...

Food safety has become an important food quality attribute within the last decade. In 2002, we conducted a consumer survey with 449 subjects in Kiel to determine actual consumer perceptions to food quality and safety. We compared these data with our former consumer surveys in Kiel. Over the past decade food quality is perceived to have improved. Regarding to food related health risks, the feeli...

Network creation games have been studied in many different settings recently. These games are motivated by social networks in which selfish agents want to construct a connection graph among themselves. Each node wants to minimize its average or maximum distance to the others, without paying much to construct the network. Many generalizations have been considered, including non-uniform interests...

In wagonload traffic, a production form in railway freight traffic, small groups of wagons have to be transported. In order to decrease transportation costs, wagons from different relations are consolidated. In railyards trains can be separated and rearranged to new trains. The costs arising from this process, which is called reclassification, must be balanced with the transportation costs. The...

The level of price volatility should theoretically be confined to export parity price levels at the lower end and import parity price levels at the upper end of the price band, reflecting supply and demand conditions during surplus and deficit marketing seasons respectively. A greater gap between these export and import parity prices will reflect high marketing costs, often representing high tr...