Richard P. Cushman

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We obtain a global version of the Hamiltonian KAM theorem for invariant Lagrangean tori by glueing together local KAM conjugacies with help of a partition of unity. In this way we find a global Whitney smooth conjugacy between a nearly integrable system and an integrable one. This leads to preservation of geometry, which allows us to define all nontrivial(More)
In this Preface, we make some brief remarks about the history, theory and applications of symplectic reduction. We concentrate on developments surrounding our paper Marsden and Weinstein [1974] and the closely related work of Meyer [1973], so the reader may find some important references omitted. This is inevitable in a subject that has grown so large and(More)
Economic issues have had a growing importance in the health care field as the sector's share of the gross national product has risen. Clinicians are under increasing pressure to adopt more cost-effective treatment practices as a result of initiatives being taken by the major third-party payers, government, and business. However, recent publications suggest(More)
BACKGROUND AND OBJECTIVES This study reports on a novel qualitative method for evaluating family practice training programs. Previous evaluation techniques have generally been quantitative in nature and have limited their scope to a few isolated elements of residency education. METHODS A guest faculty, working in conjunction with local faculty, conducted(More)
United States health care is engaged in an ambitious project to make its clinical and administrative records "100% electronic." Substantial benefits are expected in both clinical care delivery and medical research (especially for public health surveillance and outcomes/effectiveness studies). Substantial costs also potentially accrue, beyond the large(More)
Le timbre de la trompette est noble et éclatant; il convient aux idées guerrières, aux cris de fureur et de vengeance, comme aux chants de triomphe, il se prête à l’expression de tous les sentiments énergiques, fiers et grandioses, à la plus part des accents tragiques. Il peut même figurer dans un morceau joyeux, pourvu que la joie y prenne un caractère(More)
Four flourescein isothiocyanate (FITC) derivatives of Naja naja siamemsis 3 neurotoxin (alpha-toxin), labeled at the epsilon-amino groups of Lys-23, Lys-35, Lys-49, or Lys-69, and a tetramethylrhodamine isothiocyanate (TRITC) derivative, labeled at epsilon-amino group of Lys-23, were prepared and used to analyze the orientation of cobra alpha-toxin on the(More)