Leon J. Osterweil, University of Massachusetts Amherst Matt Bishop, University of California at Davis Heather M. Conboy, University of Massachusetts Amherst Huong Phan, University of Massachusetts Amherst Borislava I. Simidchieva, University of Massachusetts Amherst and Raytheon BBN Technologies George S. Avrunin, University of Massachusetts Amherst Lori A. Clarke, University of Massachusetts A...

This study develops a methodology of inference for a widely used Cliff-Ord type spatial model containing spatial lags in the dependent variable, exogenous variables, and the disturbance terms, while allowing for unknown heteroskedasticity in the innovations. We first generalize the GMM estimator suggested in Kelejian and Prucha (1998,1999) for the spatial autoregressive parameter in the disturb...

In abstract elementary classes limit models are sometimes the appropriate substitute for saturated models. For Galois-stable abstract elementary classes which satisfy the amalgamation property, we prove under the assumption that there is a mildly behaved dependence relation, that for any model M , any two limit models over M of the same cardinality are isomorphic. This is useful in dealing with...

Given a Heath–Jarrow–Morton (HJM) interest rate model M and a parametrized family of finite dimensional forward rate curves G, this paper provides a technique for projecting the infinite dimensional forward rate curve rt given by M onto the finite dimensional manifold G. The Stratonovich dynamics of the projected finite dimensional forward curve are derived and it is shown that, under the regul...

James Klosky, U.S. Military Academy Led Klosky is an Associate Professor and Director of the Mechanics Group in the Department of Civil and Mechanical Engineering at the United States Military Academy at West Point. He is a registered Professional Engineer in Maryland. Dr. Klosky received his B.S. and M.S. degrees in Civil Engineering from Virginia Polytechnic Institute in 1987 and 1988, respec...

The concept of occupationalther­ apy as a "science of adaptive responses," as proposed by King in her 7978 Eleanor Clarke Slagle Lecture, is explored and expanded on in this article. The authors pos­ tulate an adaptation continuum consIsting of homeostatzc reac­ tions, adaptive responses, adaptIVe skills, and adaptive patterns-a continuum that places the adap­ tive response in a sequential and ...

In a recent paper in Religious Studies, Clarke criticizes Mumford’s definition of a miracle as it fails to recognize a supernatural agent capable of intent. Clarke believes that in order for an event to qualify as a miracle a supernatural agent must intend it. It is my aim to dismiss this qualification and demonstrate how Mumford’s intent-neutral definition is less problematic. I will do this b...

In this paper, we introduce a new concept of generalized matrix rings and build up the general theory of radicals for g.m.rings. Meantime, we obtain r̄b(A) = g.m.rb(A) = ∑ {rb(Aij) | i, j ∈ I} = rb(A)