ogy in the pharmaceutical industry (1). Over the past decade, there has been a logarithmic increase in the industry’s ability to screen large combinatorial libraries of compounds against target molecules (2). The technology to achieve this has come in the form of robotics, high-density microplates, small volume (microliter) liquid handling, and sophisticated detection schemes. Signifi cant effo...

Three dimensional quantum gravity with torus universe, T 2 ×R, topol-ogy is reformulated as the motion of a relativistic point particle moving in an Sl(2, Z) orbifold of flat Minkowski spacetime. The latter is precisely the three dimensional Milne Universe studied recently by Russo as a background for Strings. We comment briefly on the dynamics and quantization of the model. Stanley has made ma...

OGY,” the Technical Advisory Service for Attorneys (TASA) Web site lists more than 9,500 categories of experts. Large accounting firms and other forensic firms perform litigation support services. And the Martindale-Hubbell directory contains more than 4,000 experts, services, suppliers, and consultants. In just a few decades, expert witnesses in litigation have gone from a rarity to the common...

An algorithm is presented for merging threedimensional symbolic descriptions of static polyhedral scenes obtained from multiple viewpoints. The 3-D descriptions are assumed to be partial because of occlusions. The merging algorithm treats the topol ogy of the dcscriptions (i.e., connections between vertices, edges, and faces) separately from the geometry (i.e., physical dimensions and relative ...

This paper studies the creation of schematic maps from traditional vector-based, carto-graphic information. An algorithm is proposed to modify positions of lines in the original input map with the goal of producing as output a schematic map that meets certain geometric and aesthetic criteria. Special emphasis is placed here on preserving topological structure of features during this transformat...

Contributions to the Development of Soil MicrobiolSocieties, and Meetings: ogy from the Southeastern United States: DR. F. The Virginia Academy of Science: DR. SIDNEY S. B. SMITH . 95 NEGUS. The Southeastern Section of the Botanical The American Federation for Clinical Research: DR. Society of America: DR. KENNETH W. HUNT ...... 115 MAURICE A. SCHNITKER ..98........................................

{ The Dual Busy Tone Multiple Access (DBTMA) scheme was designed for decentralized networks such as Packet Radio Networks (PRN's). We use the RTS/CTS dialogue to reserve the channel in DBTMA. In addition, we use two busy tones to notify neighbor nodes of the ongoing transmission and reception after a successful channel reservation. Our analysis and simulations show that DBTMA provides higher ne...

The well-known B-tree data structure provides a mechanism for dynamically maintaining balanced binary trees in external memory. We present an external-memory dynamic data structure for maintaining arbitrary binary trees. Our data structure, which we call the topology B-tree, is an external-memory analogue to the internal-memory topol-ogy tree data structure of Frederickson. It allows for dynami...

During the administration of thiourea to rats for periods of 1 year or longer, squamous-cell carcinomas and sarcomas developed in the region of the face (10). Further experiments on larger groups of animals have now been completed and confirm the first results. In addition to the tumors previously described (10), located between the external ear duct and the eye, a certain number were observed ...

Mammalian cell culture has served as an invaluable tool in cell biology for several decades. Mono­ layers of adherent cells grown on flat and rigid two-dimensional (2D) substrates, such as polysty­ rene or glass, have evolved as the mainstay in conventional cell culture systems. Two-dimensional cell culture studies have played a pivotal role in furthering our understanding of developmental biol...