in this paper, the behavior of saving and consumption has been considered in ramsey – cass- koopmans model’s framework. our purpose was investigation of dynamics of these variables and analysis of their response to other parameter and variable variations. so, we made lagrangian function subject to some restrictions and euler equations and other steady state path equations. and then, we have cal...

most developing countries have achieved productivity growth in economic sectors like agriculture for more than 30 years. universities and governmental research centers have tried to generate knowledge with direct social and economic effects during these decades. so, productivity and production growth can be attributed to technological changes made possible through investment in agricultural res...

We compare the performance of three alternative multi-object auction institutions: simultaneous ascending auctions with the hard closing rule, simultaneous ascending auctions with the soft closing rule, and simultaneous first price sealed bid auctions. Among the three formats, the simultaneous ascending auction with the soft closing rule is the most efficient and produces outcomes closest to th...

This paper evaluates the interacted effects of the fiscal and monetary policies on the nominal and real macro-variables of the Iranian economy. Our analysis is thus based on the optimal control theory by which the optimal path of the control variables including monetary and fiscal tools are determined over the period 1963-2006. We also use a macro-econometric model in form of a simultaneous equ...

This paper concerns classical solutions for homogeneous Dirichlet problem of parabolic equations coupled via exponential sources involving variable exponents. We first establish blowup criteria for positive solutions. And then, for radial solutions, we obtain optimal classification for simultaneous and non-simultaneous blowup, which is represented by using the maxima of the involved variable ex...

This paper deals with the issues of identification and estimation in a bivariate simultaneous equations system with endogenous dummy variables and continuous observable dependent variables. The model is an extension of threshold models to a simultaneous equations framework. Depending on the sign of relevant parameters, for a range of values of the exogenous variables the relationship between th...

Using data from a repeated public good game, I conduct a Granger causality test and find that contributions and beliefs about the contributions of others decline together, with neither variable leading the other. As a result, I model contributions and beliefs using a system of simultaneous equations. Estimating the system provides evidence on the magnitude of the projection bias. Since contribu...