This paper presents a low-power 128-tap dual-channel direct-sequence spread-spectrum (DSSS) digital matched-filter chip. Design techniques used to reduce the power consumption of the system include latch-based register file filter structure, a high-rate compression scheme, optimized compressor cells, and semicustom layout design. To further reduce the power consumption and the hardware requirem...

Knowledge Acquisition (KA) Scripts capture typical modification sequences that users follow when they modify knowledge bases. KA tools can use these Scripts to guide users in making these modifications, ensuring that they follow all the ramifications of the change until it is completed. This paper describes our approach to design, develop, and organize a library of KA Scripts. We report the res...

Statistical models almost always yield predictions that are more accurate than those of human experts. However, humans are better at data acquisition and at recognizing atypical circumstances. We use prediction markets to combine predictions from groups of humans and artificialintelligence agents and show that they are more robust than those from groups of humans or agents alone.

Spoken dialogue interfaces are nding usage in a number of important applications. Conversational moves are the atoms of the interaction between a user and the computer system. We are building a portable toolkit for constructing dialogue interfaces in diier-ent applications. Portability requires that we endow this toolkit with a wide range of conversational moves. The conversational moves conven...

Novel microfluidic technologies being developed for portable diagnostic systems have potential for use in TB serodiagnosis or as platforms for cell and biomolecular assays. Using microfluidics, with its miniaturized channels and reservoirs for portable devices, offers many advantages, including: high surface-to-volume ratio; a low Reynolds number; increased speed of reaction; reduced cost of re...

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As Reconfigurable Computing (RC) systems become more common place among application scientists and developers, a mechanism for porting existing work to other platforms is increasingly desirable. The constantly changing technologies and architectures in today’s RC platforms present a challenge to any developer wishing to move from an early development system to a newer system. Many new RC system...

With recent advances in surface chemistry, microfluidics, and data analysis, there are ever increasing reports of array-based methods for detecting and quantifying multiple targets. However, only a few systems have been described that require minimal preparation of complex samples and possess a means of quantitatively assessing matrix effects. The NRL Array Biosensor has been developed with the...

Overview Man-portable air defence systems have received increasing political attention in recent years, because of the demonstrable risk that they pose to both military and civilian aircraft. They have been catalogued in some of the most poorly secured national stockpiles. In many more cases, questions remain about their numbers and the security measures in place to protect them from diversion....

This application note describes power-management schemes for portable applications with fourand three-cell battery systems. Optimal designs and uses for step-up/down converters, linear regulators, voltage converters, charge pumps, and inductorless regulators are shown. Several Maxim power-management devices are featured. Numerous diverse and conflicting constraints burden the designer of small ...