Although approaches for vertical fragmentation and data allocation have been proposed 13, 16], algorithms for vertical fragmentation and allocation of data and rules in distributed deductive database systems (DDDBSs) are lacking. In this paper, we present diierent approaches for vertical fragmentation of relations that are referenced by rules and an allocation strategy for rules and fragments i...

Boudry and Gray (2003) have documented that the optimal buy-and-hold demand for Australian stocks is not necessarily increasing in the investment horizon when returns are predictable. Such finding is in contrast with Barberis (2000) who shows that positive monotonic horizon effects predominate for US stocks. Using a closed-form approximation to the asset allocation problem, this paper relates t...

This paper applies Kim and Warde’s (2004) stratified Warner’s randomized response model to Mangat and Singh’s (1990) two-stage randomized response model. The proposed stratified randomized response model has an optimal allocation and a large gain in precision. Hence, the estimator based on the proposed method is more efficient than Kim and Warde’s (2004) and Mangat and Singh’s (1990) estimators...

District heating pricing is a core element in reforming the heating market. Existing district heating pricing methods, such as the cost-plus pricing method and the conventional marginal-cost pricing method, cannot simultaneously provide both high efficiency and sufficient investment cost return. To solve this problem, the paper presents a new pricing model, namely Equivalent Marginal Cost Prici...

The allocation of a set of resources to a set of agents is studied. The agents may express preferences for complementary use of goods. It is assumed that the agents are self-interested. A procedure to compute fair, competitive prices is suggested. The prices may be used to elicit honest preference. This allows to solve the allocation problem optimally in most cases. Finally, the applicability o...

Supplier selection is a multi-criteria problem which includes both tangible and intangible factors in these problems if suppliers have capacity or other different constraints two problems will exist: which suppliers are the best and how much should be purchased from each selected supplier? The objective of this paper is to present an integrated model and a supporting approach for effective ...