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Used in the proper dose, these carcinogens lead within a few months to the formation of multicentric hepatomas in practically 100 Ufo of the experimental animals, and are therefore a very useful tool for studies of the cytogenesis of cancer (see BUCHNER, 1961;

The point of departure of this general survey of modern structural linguistics is the place of language in human relations. The book may, however, be of some value also for the general reader who is interested in language, in language learning, or in communication processes.

Theoretical researches in general relativity and observational data from galactic astronomy combine in this volume in contributions to one of the oldest questions of natural philosophy: Is the structure of the physical world more adequately described by a continuous or a discrete mode of representation?

Nonlinear processes in the resonant interaction are used to illustrate the physical mechanisms involved and to indicate how these processes have led to modern applications such as isotope separation, detection of single atoms and molecules, and chemical and biochemical synthesis.

This book is an introduction to the study of methods of obtaining generating functions. Weisner's group-theoretic method is explained in detail in Chapter II and is further illustrated in Chapter III. His method of obtaining generating functions is only one of these results.

2) Since no system can fully anticipate new problems and scientific approaches that may become impor tant at some future time, the system must be open to provide the possi bility of adding and correlating the data of special research studies with the .

The corresponding term medical inforaatics, now used in the name of international societies such as the "International Medical Informatics Association", covers "medical computer science", "medical information science", as well as "biomedical engineering" and has no de finite boundary to "biomathematics".

It is now stylish to teach elementary linear algebra at the sophomore college level, and we feel that the require ment that the reader should be familiar with elementary linear algebra is no more demanding than the usual requirement in most electrical engineering texts that the reader should be familiar with calculus.

An ultrafilter is a truth-value assignment to the family of subsets of a set, and a method of convergence to infinity. The model-theoretic property finds its expression in the construction of the ultraproduct and the compactness type of theorem of Los (implying the compactness theorem of first-order logic);

The growth of the virus in the tumor cells was studied with the electron microscope, in the hope that this might shed some light on the manner in which viral infection transforms a poorly immunogenic tumor into a highly immunogenic one.

The treatment of the fundamental existence theorems in Chapter XI by means of integral equations meets squarely the difficulties incident to *the discontinuity of the kernel, and the same chapter gives an account of the most recent developments with respect to the Dirichlet problem.

Constructing "flows" of integral points on certain algebraic manifolds given by systems of integral polynomials, we are able to prove individual ergodic theorems and mixing theorems in certain cases.

The stability of motion of such bodies, in particular, has been the subject of study by Soviet engineers and applied mathematicians who have brought their fuH powers of analysis to bear on the problem, and have succeeded in developing a very weH-founded body of theory.

Closely allied to this is that as consumption (both current and future) is the ultimate objective of all economic activity and economic systems (mercantilists notwithstanding), in a fundamental sense consumption patterns are an objective way of measuring and assessing economic performance.

Electromagnetic Wave Propagation in Turbulence is devoted to a method for obtaining analytical solutions to problems of electromagnetic wave propagation in turbulence. The method itself relates to asymptotic results that are applicable to a broad class of problems for which many asymptotic methods had to be employed previously.

Experts will find efficient methods of calculating the transition rates, as well as new applications of quasiclassical methods and fresh treatments of standard problems.

From the 1960s onward, the pioneer work of a few investigators clearly showed that hereditary factors were not only related to rare neoplasms, but could also be respon sible for the occurrence of a sizeable fraction of tumors that do not usually show features of inheritance (as in the case of breast or colorectal cancer).

The significant increase in applications of Barbier and Barbier-type reactions in (in-) organic synthesis over the past twenty-five years, combined with repeated stimulation on the part of Springer-Verlag (Dr. R.

Although the quantum-theoretical descrip tion of these interference effects is quite subtle, it turns out - as so often in quantum mechanics - that a simple classical or semi-classical description offers much insight and can even explain quantitative features.

In anglo-american literature there exist numerous books, devoted to the application of the Laplace transformation in technical domains such as electrotechnics, mechanics etc.

Strutural Analysis of Point Defects in Solids introduces theprinciples and techniques of modern electron paramagneticresonance (EPR) spectroscopy essentialfor applications tothe determination of microscopic defectstructures.

Volume XV "Urology in Childhood" was written in 1956/57 and was the first in the series of the Encyclopedia of Urology to appear.

The underlying kinematical framework of radiation-belt theory is given by the adiabatic theory of charged-particle motion [3J, and the interesting dynamical phenomena are associated with the violation of one or more of the kinematical invariants of adiabatic motion.