A modification of the vectorcardiographic method of studying electrical events is presented. Simultaneous scalar leads, taken by any vector lead system, are first recorded. The important time intervals, difficult or impossible to read from the loop itself, are measured from these tracings. Proper pairs of the scalar leads can then be rapidly integrated into vector loops by an easily constructed...

Recent work has constructed economic mechanisms that are both truthful and differentially private. In these mechanisms, privacy is treated separately from the truthfulness; it is not incorporated in players’ utility functions (and doing so has been shown to lead to non-truthfulness in some cases). In this work, we propose a new, general way of modelling privacy in players’ utility functions. Sp...

IN COMMON vectoreardiographic practice, vector loops are recorded in three plalne projections that are perpendicular to one another (frontal, sagittal, and horizontal planes). The arbitrary choice of these planes has been derived from body axes rather than from the spatial orientation of the vectorcardiogram or the heart itself. Several investigators1'-" have proposed, therefore, to replace the...

a rather large distance. With this in mind, the authors propose a vectorcardiographic method based on a trirectangular trihedron. Comparisons are made between calculated scalar leads derived from the spatial vectorcardiogram, and real scalar leads recorded from the subject. In case of concordance the hypothesis of a single instantaneous cardiac vector within an homogeneous conducting medium is ...

THE spatial vectorcardiogram is an approximate model of the moment-to-moment changes in direction and magnitude of the unbalanced electrical activity of the heart in three dimensions. In practice it is recorded from the surface of the human thorax through specially placed electrodes, so the information it records is essentially similar to that recorded by scalar (surface) electrocardiography. A...