The storage density of shift-multiplexed holographic memory is calculated and compared with experimentally achieved densities by use of photorefractive and write-once materials. We consider holographic selectivity as well as the recording material's dynamic range (M/#) and required diffraction efficiencies in formulating the calculations of storage densities, thereby taking into account all maj...

Efficiency claims play a key role in the analysis of mergers and horizontal agreements. Static efficiencies, associated with the production and distribution of existing products, are most often considered relevant. Dynamic efficiencies, of improved processes and products, are also important, but they are inherently more difficult to estimate. Efficiencies tend to play a larger role in analysis ...

‎the purpose of this paper is to offer the equitable method for ranking decision making units(dmus) based on the dynamic data envelopment analysis (ddea) concept, where quasi-fixed inputs or intermediate products are the source of inter-temporal dependence between consecutive periods. in fact, this paper originally makes the use of an approach extending the ranking of dmus in dea by khodabakhsh...

the motivation of this paper is to propose such equitable method for ranking all decision making units (dmus) in dynamic data envelopment analysis (ddea) framework. as far as we are aware there is not more studies in dynamic dea literature. what's more, in such cases the best operating unit is important to be sampled for the others in under evaluated time periods. however, in this special conce...

Measuring the efficiency of real businesses is not a simple task, because a real business may involve several processes and sub-processes, forming a very complicated dynamic network of interactions. In this paper, a customized dynamic network data envelopment analysis (NDEA) model is proposed to measure the efficiency of the sub-processes in a real business. The proposed dynamic NDEA model is f...

This paper derives the dynamic programming equation (DPE) to a differentiable Markov Perfect equilibrium in a problem with non-constant discounting and general functional forms. Beginning with a discrete stage model and taking the limit as the length of the stage goes to 0 leads to the DPE corresponding to the continuous time problem. The note discusses the multiplicity of equilibria under non-...

Detailed case study material illustrates why the performance of two British national champions (British Airways and British Telecom respectively) was superior to that of their German counterparts (Lufthansa and Deutsche Telekom): beyond just the effects of privatisation, both the airline and telecommunications industries have been characterised by substantial technological and market change whi...

despite the title of intellectual property law, this legal system differs from the classic property law in several aspects, inter alia, the time of protection, the standards for protection, the scope of protection and the enforcement of intellectual property rights. these limitations and differences are largely because of the economic considerations regarding different kinds of positive efficie...

in this article, non radial method of dynamic dea with the parallel network structure is presented and is used for calculation of relative efficiency measures when inputs and outputs do not change equally. in this model, dmu divisions under evaluation have been put together in parallel. but its dynamic structure is assumed in series. since in real applications there are undesirable inputs and o...