cDNA and genomic clones encoding DNA topoisomerase I were isolated from Arabidopsis thaliana Xgtl1 and XFix libraries by low stringency hybridization with a Saccharomyces cerevisiae TOPi probe. The cDNA clones include a 2748-base pair open reading frame predicting an amino acid sequence that is highly homologous to sequences encoded by TOP1 from yeast and human sources. The sequence of the upst...

Dourish and Bellotti (1992) defined awareness as “an understanding of the activities of others, which provides context for your own activity.” Knowing who is around, what is happening, and how the things are going is critical in establishing and maintaining collaborative relationships; however, establishing and maintaining awareness has been reported to be difficult without appropriate supporte...

We are developing a computer-based method for identifying individual action potentials in multi-unit peripheral nerve recordings. Threshold level, sinusoidal stimuli are used to elicit phase-locked activity from single units. These action potentials are digitized, and a template is constructed using various waveform parameters. Once templates have been generated for all the units, the program i...

We study here an optimal control problem for a semilinear elliptic equation with an exponential nonlinearity such that we cannot expect to have a solution of the state equation for any given control We then have to speak of pairs control state After having de ned a suit able functional class in which we look for solutions we prove existence of an optimal pair for a large class of cost functions...

Objective: There is increasing pressure to share health information and even make it publicly availab However, such disclosures of personal health information raise serious privacy concerns. To alleviate such concerns, it is possible to anonymize the data before disclosure. One popular anonymization approach is kanonymity. There have been no evaluations of the actual re-identification probabili...

Young basaltic knolls have been discovered on the old oceanic lithosphere, namely petit-spot volcanoes. Based on their geochemical signatures, they have presumably originated from partial melts in the asthenosphere. However, there is no direct information on the depth provenance of petit-spot formation. Here we report new geothermobarometric data of rare mantle xenoliths discovered from petit-s...

Moments of crisis may serve as critical junctures for imagining alternatives. As the future has become increasingly volatile and precarious in these unsettled times pandemic, climate emergency, rising inequality an ever looming digital (r)evolution, there is a great need opportunity to develop theory that can guide society towards its potentialities. But how we theorize what does not (yet) exis...

The complex process of social change can be facilitated by applying the findings of behavior analysis. Los Horcones, located in Mexico, is a Walden Two community which is guided by behavioral technology. The success of the community since it was founded in 1973 illustrates the promise of social applications of behavioral principles. Some misconceptions about behavior analysis and behaviorism as...

•Vacuum evaporation of FAI enables uniform MA-free CsxFA1−xPbX3 perovskite film•Introduction chlorine to the precursor improves film quality•Over 24% efficient PSCs•95% initial PCE maintained after storage in dry air for over 20,000 h Based on their excellent optoelectronic properties and low cost, metal halide perovskites have become a rising star next-generation photovoltaics. Methylammonium ...

Simple tracking algorithms based upon nearest neighbor filtering do not correctly consider measurement origin uncertainty and, therefore, fail to perform well in situations of high target density and clutter. The optimal tracking algorithm for commonly used targetclutter models computes the posterior density of the target state conditioned on the past history of' observations. This posterior de...