Robert L. Parker – författare

In many physical sciences, the most natural description of a system is with a function of position or time. In principle, infinitely many numbers are needed to specify that function, but in practice only finitely many measurements can be made. Inverse theory concerns the mathematical techniques that enable researchers to use the available information to build a model of the unknown system or to determine its essential properties. In Geophysical Inverse Theory, Robert Parker provides a systematic development of inverse theory at the graduate and professional level that emphasizes a rigorous yet practical solution of inverse problems, with examples from experimental observations in geomagnetism, seismology, gravity, electromagnetic sounding, and interpolation. Although illustrated with examples from geophysics, this book has broad implications for researchers in applied disciplines from materials science and engineering to astrophysics, oceanography, and meteorology. Parker's approach is to avoid artificial statistical constructs and to emphasize instead the reasonable assumptions researchers must make to reduce the ambiguity that inevitably arises in complex problems.The structure of the book follows a natural division in the subject into linear theory, in which the measured quantities are linear functionals of the unknown models, and nonlinear theory, which covers all other systems but is not nearly so well understood. The book covers model selection as well as techniques for drawing firm conclusions about the earth independent of any particular model.

This book is the first extensive guide to the life, music, and writings of Carlos Ch vez (1899-1978), Mexico's most influential musician of the 20th century. The chapter on biography also presents a characterization of his compositional styles. This work provides a comprehensive listing of Ch vez's compositions and arrangements by genre and performance medium, and reviews the composer's own abundant writings on a broad range of musical subjects. Subsequent chapters address other authors' writings about his multi-faceted career as composer, conductor, teacher, and arts administrator that contributed to his international reputation. A chapter on Research Aids includes annotations of pertinent general reference works, catalogs, and collections of letters that will assist both the general reader and the music specialist.Introductory narratives illuminate the bibliographic entries in each section, and cross references facilitate access to literature that extends beyond a single relevant topic. The book includes three indexes, which cover compositions and arrangements, authors and titles, and subjects.

This book is the first extensive guide to the life, music, and writings of Carlos Ch vez (1899-1978), Mexico's most influential musician of the 20th century. The chapter on biography also presents a characterization of his compositional styles. This work provides a comprehensive listing of Ch vez's compositions and arrangements by genre and performance medium, and reviews the composer's own abundant writings on a broad range of musical subjects. Subsequent chapters address other authors' writings about his multi-faceted career as composer, conductor, teacher, and arts administrator that contributed to his international reputation. A chapter on Research Aids includes annotations of pertinent general reference works, catalogs, and collections of letters that will assist both the general reader and the music specialist.Introductory narratives illuminate the bibliographic entries in each section, and cross references facilitate access to literature that extends beyond a single relevant topic. The book includes three indexes, which cover compositions and arrangements, authors and titles, and subjects.