Timber production in New Zealand was privatized in 1987. We examine the effects of this change on the level of New Zealand sawn timber production, and changes in the seasonal pattern, using a state-space model with intervention variables. We describe the formulation and estimation of the state-space model, and show how it can be used to examine both the structural changes around the time of pri...

Let Q = (qij , i, j ∈ S) be a stable and conservative Q-matrix over a state space S consisting of an irreducible (transient) class C and a single absorbing state 0, which is accessible fromC. Suppose thatQ admits a finiteμ-subinvariant measure m = (mj , j ∈ C) on C. We consider the problem of identifying all Q-processes for which m is a μ-invariant measure on C.

The existence of a common prior is a property of the state space used to model the players' asymmetric information. We show that this property is not just a technical artifact of the model, but that it is immanent to the players' beliefs. To this end, we devise a condition, phrased solely in terms of the players' mutual beliefs about the basic, objective issues of possible uncertainty, which is...

Introduction Conclusions References

In this paper we study thermodynamic length of an isentropic Ideal and quasi-Ideal Gas using Weinhold metric in a two-dimensional state space. We give explicit relation between length at constant entropy and work.

In this paper we give necessary and sufficient spectral conditions for various notions of strict positive realness for single input single output, impulse free Descriptor Systems. These conditions only require calculation of eigenvalues of a single matrix. A characterization of a KYP-like lemma for descriptor systems is also derived, and its implications for the stability of a class of switched...

The paper studies the class of analytic input/state/output systems for which the vector fields and the observation functions are only partially defined. The state space of the system is a universe space a newly defined concept. As an example, quotient systems and observability are studied in detail. Observability is defined in a new way, consistent with the “universal” approach.

In the paper the problem of stability of fractional discretetime linear scalar systems with state space pure delay is considered. Using the classical D-decomposition method, the necessary and sufficient condition for practical stability as well as the sufficient condition for asymptotic stability are given.