One hundred patients with suspected coronary heart disease were studied by vectorcardiography (VCG), electrocardiography (ECG), and coronary arteriography. Twenty-eight patients had VCG evidence of anterior infarction; 26 of this group had severe narrowing or obstruction of the left anterior descending branch. Five did not have anterior infarction by ECG. Twenty-seven patients had VCG evidence ...

Electronic markets are based on classic market design assumptions that often do not hold. This thesis examines the conflict between theory and practice for the class of Vickrey-Clarke-Groves mechanisms (VCG) and the auctions it has inspired in electronic commerce, most notably the iterative auctions found on eBay. VCG mechanisms provide bidders with an optimal strategy to truthfully reveal thei...

Relationship has been established between epicardial ST-segment elevation, considered a reliable estimate of ischemic injury in experimental myocardial damage, and ST changes by multiple-lead precordial electrocardiography. However, 35-lead precordial mapping is time-consuming and suitable only for anterior infarctions. An alternate, more rapid method for recording ST segments is an external 3-...

Genetic exchange by asexual filamentous fungi is presumed to be limited to isolates in the same vegetative compatibility group (VCG). To evaluate genetic isolation of Aspergillus flavus due to vegetative incompatibility, three gene regions were chosen that contained closely spaced nucleotides that were polymorphic among some of the six VCGs examined. A member of each VCG was collected from five...

There are two dominant approaches for the construction of automatic program verifiers, Verification Condition Generation (VCG) and Symbolic Execution (SE). Both techniques have been used to develop powerful program verifiers. However, to the best of our knowledge, no systematic experiment has been conducted to compare them. This paper reports on such an experiment. We have used the specificatio...

In private values settings, the Vickrey-Clarke-Groves (VCG) mechanism leads to efficient auction outcomes, while the theoretical properties of the Simultaneous Ascending (SA) auction are not well understood. This leads us to compare the properties of an SA and a VCG auction in an experimental setting with private values for multiple objects having complementarities. Statistically, we find littl...

Cardiac syndrome X (CSX) is a clinical condition, characterized by angina, positive stress test and negative coronary angiography. Myocardial ischemia is suggested to influence the ischemic changes in the electrocardiogram (ECG), observed during stress test. The aim of this study, is to obtain CSX patterns of the high-resolution vectorcardiographic (VCG) loops in the horizontal (H), frontal (F)...

We develop optimal VCG mechanisms in order to assign identical economic “bads” (for example, costly tasks) to agents. The optimal non-deficit VCG mechanism achieves asymptotic budget balance, yet the non-deficit requirement is incompatible with reasonable welfare bounds. If we omit the non-deficit requirement, individual rationality greatly changes the relationship between burning a budget surp...

Vectorcardiograms (VCG) from a consecutive group of 77 patients with significant aortic valve disease were analyzed. All of the patients had complete left and right heart catheterization with normal coronary arteriograms and normal left ventricular contraction. Thirty-five (46%) patients met VCG criteria for anterior myocardial infarction (AMI-35%) and/or inferior myocardial infarction (IMI-14%...

Power companies such as Southern California Edison (SCE) uses Demand Response (DR) contracts to incentivize consumers to reduce their power consumption during periods when demand forecast exceeds supply. Current mechanisms in use offer contracts to consumers independent of one another, do not take into consideration consumers’ heterogeneity in consumption profile or reliability, and fail to ach...