, postulates, underlying motives, and particular “effects ” that they specialize in explaining—these theories emphasize one of two distinct routes to attitude change (Petty and Cacioppo 1981, 1983). One, called the central route, views attitude change as resulting from a person’s diligent consideration

technologies of the 21st century: genetics, nanotechnology, and robotics (including artificial intelligence). Four central postulates of the book are as follows: 1. A technological-evolutionary point known as "the singularity " exists as an achievable goal for humanity. 2. Through a law

We discuss the formalization, in the Matita Interactive Theorem Prover, of some results by Chebyshev concerning the distribution of prime numbers, subsuming, as a corollary, Bertrand’s postulate. Even if Chebyshev’s result has been later superseded by the stronger prime number theorem, his

postulate is a fundamental requirement of differential geometry, and this is proven in this paper in seven ways. For centrally directed gravitation therefore both the metric compatibility condition and the tetrad postulate are accurate experimentally to one part in one hundred thousand.

The Henle-Koch postulates are reviewed in terms of their full validity in Koch's day and in light of subsequent developments. The changing guidelines developed for viral diseases, for viruses in relation to cancer and to chronic central nervous system infection, and for causative agents

are two prominent examples of such behavioral theories and constitute the basis for this review. REWARD FUNCTIONS DEFINED BY ANIMAL LEARNING THEORY This section will combine some of the central tenets of animal learning theories in an attempt to define a coherent framework for the investigation of neural

) disability. Analyses were based on two random subsamples (each with n = 524) of Longitudinal Study of Aging respondents who were nondisabled at baseline (1984) and reinterviewed in 1988 and 1990. The model's central premise was supported in two ways. The main influence of age, frequency of walking

Dr. Young’s reply to my original letter in the April edition ofHeadache does not address the central issue.1 The sole object of my letter was to bring to the attention of the readers of Headache the fact that Wolff’s hard scientific evidence showing the involvement of the extracranial branches

Minkowski diagrams in 1+1 dimensional flat space-time are given a strictly geometric derivation, directly from two gedanken experiments incorporating the principle of the constancy of the velocity of light and the principle of (special) relativity. Rectangles of photon trajectories play a central

s both demonstrate that changes in atmospheric circulation accompanying El Niño induce changes in cloud cover and evaporation which, in turn, increase the net heat flux entering these remote oceans. It is postulated that this increased heat flux is responsible for the surface warming of these oceans