This paper deals with the numerical simulation of flows of stratified fluids through channels with irregular geometry. Channel crosssections are supposed to be symmetric but not necessarily rectangular. The fluid is supposed to be composed of two shallow layers of immiscible fluids of constant densities, and the flow is assumed to be one-dimensional. Therefore, the equations to be solved are a ...

In order to get a better understanding on the concepts of dynamic eigenvalues and dynamic eigenvectors as presented in [1], the steadystate behaviour of the state variables of the filter with syllabic companding described in [2] is determined. For that purpose, the approach presented in [3] is used. Some comments are made regarding the general form of the solution of the Riccati equation involv...

The use of Hodgkin-Huxley (HH) equations abounds in the literature, but the identifiability of the HH model parameters has not been broadly considered. Identifiability analysis addresses the question of whether it is possible to estimate the model parameters for a given choice of measurement data and experimental inputs. Here we explore the structural identifiability properties of a generalized...

In this appendix we present the proofs omitted in “Dynamic Free Riding with Irreversible Investments” by Marco Battaglini, Salvatore Nunnari and Thomas Palfrey. Marco Battaglini Department of Economics Princeton University Princeton NJ 08544 [email protected] Salvatore Nunnari Department of Political Science Columbia University New York, NY 10027 [email protected] Thomas Palfrey Divisi...

This paper investigates the mechanics through which wealth may, in the long run, trickle down from the rich to the poor. In the presence of indivisibilities in investment of human capital and impossibility of borrowing money, investment in education is financed through an intergenerational transfer. In an OLG model where aggregate production requires capital and both skilled and unskilled labou...

Although random cell complexes occur throughout the physical sciences, there does not appear to be a standard way to quantify their statistical similarities and differences. The various proposals in the literature are usually motivated by the analysis of particular physical systems and do not necessarily apply to general situations. The central concepts in this paper-the swatch and the cloth-pr...

We consider the Gt/Mt/st + GIt many-server fluid queue with time-varying parameters, intended as an approximation for the corresponding stochastic queueing model, having general arrival process (the Gt), Markovian service (the Mt) and customer abandonment with mutually independent times to abandon with a general distribution (the +GIt) when there are many servers (the st) and the system experie...

By integrating dynamic programming with the theory of order preserving dynamical systems (Hirsch (1982), Smith (1995)) this paper develops a new approach to stability analysis in dynamic economic models. The main results provide simple conditions on the primitives of a model which imply that steady states are globally stable for almost all initial conditions. If the steady state is unique or la...

We contribute to the literature on optimal growth in two-sector models by solving a Ramsey problem with a concave utility function. The unique possible steady-state is independent of initial conditions and of the instantaneous utility function, but not of the discount rate, and is characterized by a wage-rental ratio depending solely on the technology of the capital sector. For an initially low...

This paper addresses the e ects of indeterminacy on the volatility of asset prices in a stochastic overlapping generations model with 3-period lived agents. With complete markets, the only indeterminacy is due to the selection of initial conditions for the economy. As with deterministic economies, the equilibrium set converges to the steady state in the long run. With incomplete markets, not on...