A portable, 12-channel electrocardiogram (ECG) recorder is described. It weighs approximately 11 pounds, can be battery operated, and provides interpretation of the ECG tracing and a computer interface. It can be used in isolated environments, emergency vehicles, or a physician's office.

The following tutorial paper describes how a block-structured mass storage device, such as a Winchester disk drive, may be made to function as part of a digital audio recording and editing system: the so-called 'tapeless recorder'. It outlines the principles of random access sound file storage and buffering, together with a discussion of digital audio requirements and the historical precedent f...

BACKGROUND Cost-effectiveness acceptability curves (CEACs) describe the probability that a new treatment or intervention is cost-effective. The net benefit regression framework (NBRF) allows cost-effectiveness analysis to be done in a simple regression framework. The objective of the paper is to illustrate how net benefit regression can be used to construct a CEAC. METHODS One hundred patient...

Although point transect distance sampling methods have become widely used in surveys of forest birds, there has been no attempt to tailor field methods to maximize the accuracy of abundance estimates by minimizing the effects of violations of the method’s critical assumptions, which are: (1) birds at distance 0 m are detected with certainty, (2) birds are detected at their initial location and ...

Recent advances in low-cost high-capacity disk drives, and low-cost high-quality video compression and decompression cards are enabling new types of digital video storage and delivery capabilities. One prominent example of this trend is the emergence of Digital (sometimes called Personal) Video Recorders (DVRs) in the home. DVRs enable the digitization, compression, storage, and time-shifted vi...

Digital signal recorders are becoming widely used in several subfields of centimetre-wavelength radio astronomy. We review the benefits and design considerations of such systems and describe the Princeton Mark IV instrument, an implementation designed for coherent-dedispersion pulsar observations. Features of this instrument include corrections for the distortions caused by coarse quantization ...

Introduction Conclusions References

IN the recent past a number of blood pressure recorders for clinical use, and especially during anaesthesia, have been described (Molyneux and Pask, 1953; Simpson, 1956). It seemed, however, that these recorders had several disadvantages and that there was a place for an instrument that was cheap, simple and not a possible source of an explosion when used in the vicinity of explosive anaestheti...

Ischemic stroke is an important cause of morbidity and mortality when untreated. Identifying atrial fibrillation is important because atrial fibrillation ischemic related strokes are associated with an increased risk of disability and death compared with strokes of other etiologies and tend to recur without anticoagulation. However, atrial fibrillation detection can be difficult when it is asym...