The problem of representing text documents within an Information Retrieval system is formulated as an analogy to the problem of representing the quantum states of a physical system. Lexical measurements of text are proposed as a way of representing documents which are akin to physical measurements on quantum states. Consequently, the representation of the text is only known after measurements h...

Cells use endocytotic membrane retrieval to compensate for excess surface membrane after exocytosis. Retrieval is thought to be calcium-dependent, but the source of this calcium is not known. We found that, in sea urchin eggs, endocytotic membrane retrieval required extracellular calcium. Inhibitors of P-type calcium channels-cadmium, omega-conotoxin MVIIC, omega-agatoxin IVA, and omega-agatoxi...

| In this paper, M/G/C/C state dependent queueing models are proposed for modeling and analyzing vehicular traac ows. Congestion aspects of traac ow are represented by introducing state dependent service rates as a function of number of vehicles on each road link. Analytical models for unidirectional and multi-source ows are presented. Finally, queueing models to analytically determine the opti...

A source of potential systematic errors in information retrieval is identiied and discussed. These errors occur when base-form reduction is applied with a (necessarily) nite dictionary. Formal methods for avoiding this error source are presented, along with some practical complexities met in its implementation.

Certain aspects of science communication are of especial importance to information retrieval. The exponential growth of science raises many questions related to increasing specialization. "Quality identification" is suggested as a critical issue. All approaches to information retrieval share a common set of basic problem areas and solutions. Semantics and redundancy are key conceptual issues an...

In our previous research, we investigated the properties of case-based plan recognition with incomplete plan libraries. Incremental construction of plan libraries along with retrieval based on similarities among planning situations (rather than on similarities among planning actions) enables recognition in light of novel planning actions. In this paper we investigate the recognition behavior in...