Cardiac psychoses: a study of the etiology, clinical features, and prognosis

1. Serious psychoses occurring as complications of heart disease are not common. 2. All the patients under observation had suffered from advanced and recurring heart failure, and the development of the confusional state coincided with the period of severe decompensation. So the exciting cause of these psychoses, or at least a constant factor in them, is the presence of advanced cardiac failure. 3. These mental disturbances are independent cf the type of heart affection. 4. All the patients were over forty years cf age. The greatest incidence occurred in the seventh, the least in the eighth decade of life. 5. Both sexes were equally affected. 6. It might be safe to assume that these psychoses are determined, in some cases at least, by inadequate nutrition of the brain and special centers consequent on the disordered circulation. 7. Generalized and cerebral arteriosclerosis are of decisive importance in some cases, at any rate. 8. High arterial blood pressure, with one exception, was common to all. 9. Digitalis poisoning may be held responsible in unusual cases for the development of a psychopathic outbreak. 10. Exhaustion from long standing heart disease is another important factor in the etiology of the cardiac psychoses. 11. The most important and frequent manifestations of these disorders are: (a) A state of mental confusion. (b) Hallucinations of sight, sound, and rarely of taste. (c) Delusions of persecution, rarely those of grandeur. (d) A state of excitation. (e) A depressive mood. (f) Insomnia - a constant symptom. 12. The occurrence of psychoses in patients with far advanced and recurring cardiac failure is of grave prognostic significance

Promissory Estoppel in Washington

This comment clarifies the considerable confusion that befogs the promissory estoppel doctrine in Washington. Part I discusses situations in which a promisee, though unable to establish a traditional contract, can invoke promissory estoppel to obtain relief. Part II examines the elements of promissory estoppel identified in Hill and illustrates their application in various fact patterns

From geometric quantization to Moyal quantization

We show how the Moyal product of phase-space functions, and the Weyl correspondence between symbols and operator kernels, may be obtained directly using the procedures of geometric quantization, applied to the symplectic groupoid constructed by ``doubling'' the phase space.Comment: 7 two-column pages, RevTeX, UCR--FM--03--9

Where Do Riders Park Dockless, Shared Electric Scooters? Findings from San Jose, California

Dockless, shared, electric kick-scooters started popping up on U.S. city streets without warning in 2017. Reaction to the shared scooters came swiftly and strongly. On the one hand, the scooters have proven popular with riders, attracting investment capital and expanding service to additional cities. But others have been less enthusiastic, with a central complaint being how shared scooters are parked. This perspective explores the extent to which parked shared scooters pose a problem to others on streets, sidewalks, and public spaces, using empirical evidence documenting where scooters have been parked in downtown San Jose, California

One is Not Enough: The Need for Multiple Respondents in Survey Research of Organizations

The need for multiple respondents per organization in organizational survey research is supported. Leadership teams’ ratings of their implementations of market orientation are examined, along with learning orientation, entrepreneurial management, and organizational flexibility. Sixty diverse organizations, including not-for-profit organizations in education and healthcare as well as manufacturing and service businesses, were included. The major finding was the large rating variance within the leadership teams of each organization. The results are enlightening and have definite implications for improved design of survey research on organizations

Fidelity Decay as an Efficient Indicator of Quantum Chaos

Recent work has connected the type of fidelity decay in perturbed quantum models to the presence of chaos in the associated classical models. We demonstrate that a system's rate of fidelity decay under repeated perturbations may be measured efficiently on a quantum information processor, and analyze the conditions under which this indicator is a reliable probe of quantum chaos and related statistical properties of the unperturbed system. The type and rate of the decay are not dependent on the eigenvalue statistics of the unperturbed system, but depend on the system's eigenvector statistics in the eigenbasis of the perturbation operator. For random eigenvector statistics the decay is exponential with a rate fixed precisely by the variance of the perturbation's energy spectrum. Hence, even classically regular models can exhibit an exponential fidelity decay under generic quantum perturbations. These results clarify which perturbations can distinguish classically regular and chaotic quantum systems.Comment: 4 pages, 3 figures, LaTeX; published version (revised introduction and discussion