This report will present a theorem-proving method for verifying parametrized recursive circuits. The method is based on semantics-preserving transformations of nets (SPTNs). Its theoretical bases are an algebraic calculus introduced by G. Hotz in 1965 and the hardware description language 2dL based on this calculus. The starting point of our method is a high-level description using bi-category ...

Recently, the first collisional family was discovered in the Kuiper belt. The parent body of this family, Haumea, is one of the largest objects in the Kuiper belt and is orbited by two satellites. It has been proposed that the Haumea family was created from dispersed fragments that resulted from a giant impact. This proposed origin of the Haumea family is however in conflict with the observed v...

Soccer is one of the most popular sports in the world with player numbers increasing annually at an explosive rate. Children now tend to start specific sports training in a specialized environment at a younger age than in previous years. The desire to be a professional soccer player is strong and future aspirations are usually relayed to the coaching staff. Coaches are, therefore, increasingly ...

Some corrections to the papers \Some Generalizations of TD-Spaces (Mat. Ves-nik 34 (1982), 221{230)" and \A Generalization of Normal Spaces (ibid. 35 (1983), 1{10)" are given. 1. Semi-T D spaces 1] The rst part of the proofs of Theorems 1.6 and 2.4 of 1] are incorrect. The following two Theorems and their proofs provide the statements and proofs of the rst parts of the Theorems 1.6 and 2.4 of 1...

Extensive studies have established that the major histocompatibility complex (MHC) 1 is the main barrier to the transplantation of skin and bone marrow. The analyses with organ allografts have been less detailed, although, at least with kidney grafts, the available evidence definitely supports a major role for the MH C in the primary rejection response. Thus, in the rat, primary kidney graft re...

Many methods of testing nonspecific bronchial responsiveness have been devised, since Curry first demonstrated the heightened bronchial responsiveness of asthmatics to histamine. The preferred rou1e of administration of bronchoconstrictors at the presem Lime is by inhalation, rather than systemically, in order to minimize unacceptable side effects. The agents inhaled have included irritants, ch...