This paper investigates the amount of information about failures needed to solve the predicate detection problem in asynchronous systems with crash failures. In particular, we show that predicate detection cannot be solved with traditional failure detectors, which are only functions of failures. In analogy to the definition of failure detectors, we define a failure detection sequencer, which ca...

In this paper we propose a novel approach to manage the throughput vs latency tradeoff that emerges when managing updates in geo-replicated systems. Our approach consists in allowing full concurrency when processing local updates and using a deferred local serialisation procedure before shipping updates to remote datacenters. This strategy allows to implement inexpensive mechanisms to ensure sy...

modern computerized technology enables more complex visual stimuli and test procedures to be in-corporated into conventional perimetry resulting in several developments in automated perimetry that have contributed to more efficient diagnosis and management of eye diseases. this review will cover a number of advances in automated perimetry including frequency doubling technology perimetry, short...

Contemporary operating systems heavily rely on single system images with shared memory constructs that may not scale well to large core counts. We consider the challenge of distributed job allocation, where each job is comprised of a set of tasks to be mapped to disjoint cores. A naive solution performing fragmented allocations may quickly escalate to deadlocks, where jobs hold and wait for cor...

We describe how to assay plasma total CO2 automatically, discretely, and highly specifically by infrared absorption spectrometry. Plasma, 50 mul, is sampled in disposable capillaries and inserted into a block wherein the specimens are protected from exposure to air. A sequencer advances the block and signals a dispenser to flush the sample into a reaction vessel with 2.6 ml fo 50 mmol/liter H2S...

Influenza epidemics and pandemics have significant impacts on economies, morbidity and mortality worldwide. The ability to rapidly and accurately sequence influenza viruses is instrumental in the prevention and mitigation of influenza. All eight influenza genes from an influenza A virus were amplified by PCR simultaneously and then subjected to sequencing on a MinION nanopore sequencer. A compl...

Chromogranin polypeptides of Mr 100,000, Mr 85,000, Mr 75,000, and Mr 65,000 have been detected in adrenal medulla chromaffin granules using anti-chromogranin antiserum. Monoclonal antibodies to this protein also detect the multiple molecular weight chromogranin polypeptides. Analysis of phosphorylated amino acids gives a value of 5 phosphoserine residues/mol of Mr 75,000 chromogranin polypepti...

I describe a system of polyphony for Pure Data (Puckette, 1996) that is applicable to situations where multiple sequencers are routed to multiple voices, so that the degree of polyphony may be controlled for each sequencer, and polyphonic voices are assigned automatically. Three new objects are crucial for this purpose: maskxor, a bitmask object, sieve, an arraybased router, polymap, a polyphon...