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- JORGE G. ASEFF, MANUEL S. SANTOS
- 2003

In this paper we are concerned with the performance of stock option contracts in the provision of managerial incentives. In our simple framework, we restrict the space of contracts available to the principal to those conformed by a fixed payment and a package of call options on the firm's stock. As compared to the fixed payment and the option grant, we find… (More)

- Juan Pablo Rincón-Zapatero, Manuel S. Santos
- J. Economic Theory
- 2009

This paper studies first-order differentiability properties of the value function in concave dynamic programs. Motivated by economic considerations, we dispense with commonly imposed interiority assumptions. We suppose that the correspondence of feasible choices varies with the vector of state variables, and we allow the optimal solution to belong to the… (More)

- Manuel S. Santos, John Rust
- SIAM J. Control and Optimization
- 2004

This paper analyzes asymptotic convergence properties of policy iteration in a class of stationary, infinite-horizon Markovian decision problems that arise in optimal growth theory. These problems have continuous state and control variables and must therefore be discretized in order to compute an approximate solution. The discretization may render… (More)

- Manuel S. Santos
- J. Economic Theory
- 2002

- JESÚS FERNÁNDEZ-VILLAVERDE, JUAN F. RUBIO-RAMÍREZ, MANUEL S. SANTOS, M. S. SANTOS
- 2005

1 This paper studies the econometrics of computed dynamic models. Since these models generally lack a closed-form solution, their policy functions are approximated by numerical methods. Hence, the researcher can only evaluate an approximated likelihood associated with the approximated policy function rather than the exact likelihood implied by the exact… (More)

- Alejandro Tormo, Francisco Celada, +6 authors Jose Perez-Calatayud
- Journal of contemporary brachytherapy
- 2014

PURPOSE
Radiotherapy (RT) has played a significant role in treating non melanoma skin cancer (NMSC). High-dose-rate brachytherapy (HDR-BT) approaches have a paramount relevance due to their adaptability, patient protection, and variable dose fractionation schedules. Several innovative applicators have been introduced to the brachytherapy community. The… (More)

Our work has been concerned with the numerical simulation of dynamic economies with heterogeneous agents and economic distortions. Recent research has drawn attention to inherent difficulties in the computation of competitive equilibria for these economies: A continuous Markovian solution may fail to exist, and some commonly used numerical algorithms may… (More)

- Boyan Jovanovic, Guillaume Daudin, +7 authors Manuel Santos
- 2007

Aside from the equilibrium that Hotelling (1931) displayed, his model of non-renewable resources also contains a continuum of bubble equilibria. In all the equilibria the price of the resource rises at the rate of interest. In a bubble equilibrium, however, the consumption of the resource peters out, and a positive fraction of the original stock continues… (More)

- Luis C. Corchón, Galina Zudenkova, +7 authors Rui Zhao
- 2008

We study the percentage of welfare losses (PWL) yielded by imperfect competition under product differentiation. When demand is linear, if prices, outputs, costs and the number of firms can be observed, PWL is arbitrary in both Cournot and Bertrand equilibria. If in addition, the elasticity of demand (resp. cross elasticity of demand) is known, we can… (More)

- Miguel A. Iraola, Manuel S. Santos
- 2007

We analyze a stochastic growth model with lags in the operation of new technologies. Stock values are impacted by news on technological innovations and some other external shocks affecting the economy. We assess the quantitative importance of various macroeconomic variables in accounting for both the observed volatility of stock values and the less… (More)