Arturo Pizano

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INTRODUCTION The World Wide Web (WWW) continues to enjoy phenomenal growth with the promise of facilitating a digital society. Technology continues to evolve, allowing an increasingly peripatetic society to remain “connected” without any reliance upon wires. As a consequence, mobile computing is a growth area and the focus of much energy. Mobile computing(More)
In this paper, we present the key ideas involved in the design and implementation of “WEBTOUR,” a system to record, playback, store, search, and distribute personalized dynamic multimedia annotations on web documents in the form of guided web tours. Using WEBTOUR, web document designers can easily augment the contents of standard web documents by recording(More)
Incorporation of 2,3,6-trifluorotyrosine (F(3)Y) and a rhenium bipyridine ([Re]) photooxidant into a peptide corresponding to the C-terminus of the β protein (βC19) of Escherichia coli ribonucleotide reductase (RNR) allows for the temporal monitoring of radical transport into the α2 subunit of RNR. Injection of the photogenerated F(3)Y radical from the(More)
A model and a language for specifying spatial integrity constraints in pictorial databases are presented. Spatial integrity constraints are assertions about the correct behavior of database systems that specify acceptable database states and state transitions. They also serve as restrictions on positions occupied by objects in a picture. The language(More)
Contemporary small screen devices are used as personal companion or communication devices. However, their physical dimensions constrain the processing, communication and user interface capabilities. Thus, rich content presentation and diverse service access via small screen appliances is limited accordingly. This paper introduces the Composite Device(More)
Substrate turnover in class Ia ribonucleotide reductase (RNR) requires reversible radical transport across two subunits over 35 Å, which occurs by a multistep proton-coupled electron-transfer mechanism. Using a photooxidant-labeled β2 subunit of Escherichia coli class Ia RNR, we demonstrate photoinitiated oxidation of a tyrosine in an α2:β2 complex, which(More)
This paper presents a system that allows the automatic generation of graphical user interfaces (GUI) for interactive database applications. The system is intended for novice application developers with limited experience in the design and implementation of graphical user interfaces, and with only a basic understanding of the conceptual database schema. The(More)
Due to the ongoing explosion of activity in all areas of multimedia systems and applications, Kluwer Academic Publishers is currently developing an advanced book series covering all topics of interest in the field. The series publishes professional reference books, research monographs, edited volumes, selected (and expanded) theses, senior/graduate level(More)
Amino acid radical generation and transport are fundamentally important to numerous essential biological processes to which small molecule models lend valuable mechanistic insights. Pyridyl-amino acid-methyl esters are appended to a rhenium(I) tricarbonyl 1,10-phenanthroline core to yield rhenium-amino acid complexes with tyrosine ([Re]-Y-OH) and(More)