The Wheeler-DeWitt equation is based on the use of canonical quantization rules that may be inconsistent for constrained dynamical systems, such as Einstein’s gravitational field equations. The resulting quantum dynamics has no classical limit, and it suffers from the infamous “problem of time.” In this article, it is shown how a dynamical time (an internal “clock”) can be constructed by means ...

Since its first publication in 1934, this series of plates made under the supervision of Dr. E. B. Jamieson to illustrate the structure of the human body, has more than proved its usefulness to the student of anatomy, and indeed as a work of reference for those who have passed on to the study of the nature and treatment of the morbid conditions to which the body is liable, and of which no under...

In this paper we describe the Burrows-Wheeler Transform (BWT) a completely new approach to data compression which is the basis of some of the best compressors available today. Although it is easy to intuitively understand why the BWT helps compression, the analysis of BWT-based algorithms requires a careful study of every single algorithmic component. We describe two algorithms which use the BW...

The Proca equation with negative mass-square is studied in a refractive and absorptive spacetime. The generation of superluminal radiation fields by subluminal currents is discussed. The possibility of time-symmetric wave propagation is analysed in the context of the Wheeler–Feynman absorber theory; it is shown how advanced modes of the Proca field can be turned into retarded ones in a permeabl...

References: 1) Parker,A.E., Wheeler,G.N., Arnemann,J., Pidsley,S.C., Ataliotis,P., Thomas,C., Rees,D., Magee,Al., Buxton,R.S: (1991) Desmosomal glycoproteins II and III: Cadherin-like junctional molecules generated by alternative splicing J. Biol. Chem. 266, 10438-10445. 2) Arnemann,J., Spurr,N.K., Wheeler,G.N., Parker,A.E., Buxton,R.S. (1991) Chromosomal assignment of the human genes coding fo...

We show that the radial Teukolsky equation (in the frequency domain) with sources that extend to infinity has well-behaved solutions. To prove that, we follow Poisson approach to regularize the non-rotating hole, and extend it to the rotating case. To do so we use the Chandrasekhar transformation among the Teukolsky and Regge-Wheeler-like equations, and express the integrals over the source in ...