By extending the underlying data structure by new elements, we also extend the intput/output relation generated by a program i.e., no existing run is killed, and no new one lying entirely in the old structure is created. We investigate this stability property for the weak second order semantics derived from nonstandard time models. It turns out that the light face, i.e., parameterless collection principle always induces stable semantics, but the bold face one may be unstable. We give an example where (...) an elementary extension kills a bold face run showing also that the light face semantics is strictly weaker than the bold face one. (shrink)

One of Chicago's great cultural achievements, the Institute of Design was among the most important schools of photography in twentieth-century America. It began as an outpost of experimental Bauhaus education and was home to an astonishing group of influential teachers and students, including Lázló Moholy-Nagy, Harry Callahan, and Aaron Siskind. To date, however, the ID's enormous contributions to the art and practice of photography have gone largely unexplored. Taken by Design is the first publication to examine thoroughly this remarkable institution (...) and its lasting impact. With nearly 300 illustrations, including many never-before published photographs, Taken by Design examines the changing nature of photography over this critical period in America's midcentury. It starts by documenting the experimental nature of Moholy's Bauhaus approach and photography's new and enhanced role in training the "complete designer." Next it traces the formal and abstract camera experiments under Harry Callahan and Aaron Siskind, which aimed at achieving a new kind of photographic subjectivity. Finally, it highlights the ID's focus on conscious references to the processes of the photographic medium itself. In addition to photographs by Moholy, Callahan, and Siskind, the book showcases works by Barbara Crane, Yasuhiro Ishimoto, Joseph Jachna, Kenneth Josephson, Gyorgy Kepes, Nathan Lerner, Ray K. Metzker, Richard Nickel, Arthur Siegel, Art Sinsabaugh, and many others. Major essays from experts in the field, biographies, a chronology, and reprints of critical essays are also included, making Taken by Design an essential work for anyone interested in the history of American photography. Contributors include: Keith Davis, Lloyd Engelbrecht, John Grimes, Nathan Lyons, Hattula Moholy-Nagy, Elizabeth Siegel, David Travis, Larry Viskochil, James N. Wood. (shrink)

Anything other than paraphrasing the well-known Heraclitean aphorism would not be more appropriate to portray the crux of the contribution of the three philosophers of the Budapest School, Gábor Hofer-Szabó, Miklós Rédei and Lázló E. Szabó, in the ongoing discussion of the principle of the common cause . Indeed, ‘common causes love to hide’ and for that reason critics and aspirant falsifiers of PCC find correlations which, at a first level of analysis, might lack a common cause explanation. But as (...) the authors argue such correlations do not amount to disconfirming evidence for the principle, since PCC does not specify where to search for a common cause of a correlation; it just states that there is one. PCC is neither falsifiable, nor verifiable; it is a metaphysical doctrine that can only be assessed for its plausibility in the light of theories of empirical science. This idea fosters the investigation of the existence of common causes of correlations in two fundamental physical t .. (shrink)