Hunrun episodic memory provides a seemingly unlimited storage for everyday experiences, and a retrieval system that allows us to access the experiences with partial activation of their components. The system is believed to consist of afast, temporary storage in the hippocampus,and a slow, long-term storage within the neocortex. Thispaper presents a neural network model of the hippocampal episod...

— This paper reviews the central issues that arise in designing intergovernmental transfers and surveys the approaches adopted in a number of countries, with special emphasis on developing countries. Since circumstances and objectives differ from country to country, no simple, uniform pattern of transfers is universally appropriate but experience around the world makes it clear that if services...

The introduction of the new technologies of computer networks and hypermedia systems in education seems promising. However, only through experimentation can the effectiveness of these technologies be demonstrated. This was the main objective of the EONT project, in the process of which the National Technical University of Athens adapted an introductory course in Software Engineering to a novel ...

Agrobacterium rhizogenes causes hairy root disease in plants. The neoplastic roots produced by A. rhizogenes infection is characterized by high growth rate and genetic stability. These genetically transformed root cultures can produce higher levels of secondary metabolites or amounts comparable to that of intact plants. Hairy root cultures offer promise for production of valuable secondary meta...

The evolution of dispersal is examined by looking at evolutionarily stable strategies (ESS) for dispersal parameters in discrete time multisite models without any cost of dispersal. ESS are investigated analytically, based on explicit results on sensitivity analysis of matrix models. The basic model considers an arbitrary number of sites and a single age class. An ESS for dispersal parameters i...

The 14 allele of the apolipoprotein E gene constitutes the major genetic risk factor to develop Alzheimer’s disease. If and how this protein contributes to the pathological cascade of Alzheimer’s disease is not known. The 14 allele particularly affects the cholinergic defect, which is one of the most consistent neurotransmitter problems in an Alzheimer’s disease brain. We have analysed several ...

Two wet biomass gasification processes, supercritical water gasification and biomethanation, were evaluated from energy, environmental, and economic aspects. Gasification of 1 dry-t/d of water hyacinth was taken as a model case. Assumptions were made that system should be energetically independent, that no environmentally harmful material should be released, and that carbon dioxide should be re...

Recent evidence provided by Diebold, Gardeazabal, and Yilmaz (1994) for the post-1973 floating rate period points toward the predictive superiority of a martingale representation of exchange rate evolution over that of an error correction model that assumes rates are cointegrated. This is an appealing result from the perspective of efficient assimilation of randomly arriving information. As a d...

Intelligence at the level of the user interface is currently being supported through a number of prevalent strands, including adaptive user interfaces, model-based user interface development and interface agents. Moreover, the term intelligent user interface typically implies the notion of dynamically enhancing the interaction with a single implemented artefact to suit different usage patterns,...

After a few pairings of a threatening stimulus with a formerly neutral cue, animals and humans will experience a state of conditioned fear when only the cue is present. Conditioned fear provides a critical survival-related function in the face of threat by activating a range of protective behaviors. The present review summarizes and compares the results of different laboratories investigating t...