nep-cmp New Economics Papers
on Computational Economics
Issue of 2009‒11‒07
four papers chosen by
Stan Miles
Thompson Rivers University

  1. Agent oriented modeling of business information systems By Vymetal, Dominik
  2. Are public policies effective in alleviating family income inequality in Iran? By Khiabani, Nasser; Mazyaki, Ali
  3. Piracy on the internet: Accommodate it or fight it? A dynamic approach By Herings P. Jean-Jacques; Peeters Ronald; Yang Michael S.

  1. By: Vymetal, Dominik
    Abstract: Enterprise modeling is an abstract definition of processes running in enterprise using process, value, data and resource models. There are two perspectives of business modeling: process perspective and value chain perspective. Both have some advantages and disadvantages. This paper proposes a combination of both perspectives into one generic model. The model takes also social part or the enterprise system into consideration and pays attention to disturbances influencing the enterprise system. Due to heterogeneous nature of the enterprise processes the outline proposed is oriented on the modeling using agents. Several types of agents are defined for the simulation model. The agents are structured into several layers. Well known JADE platform is proposed as the modeling framework. Further research directions are summed up in conclusion
    Keywords: process model; value chain model; business pattern; agent; control loop; feedback; JADE platform.
    JEL: M11 L23 L15 O21
    Date: 2009–10–28
  2. By: Khiabani, Nasser; Mazyaki, Ali
    Abstract: Redistributing incomes has always been one of the main goals of Iranian policy makers, although political regimes have changed frequently between 1991 and 2004. We have applied a microsimulation using the Oaxaca-Blinder decomposition and a Heckman correction for sample selection bias to compare simulation results for a hypothetical unchanged situation with the actual policy shift observed. While we are able to identify the years in which policy shifts occurred, our results suggest that the intended redistribution goals were at most partially achieved, affecting only some occupations and being offset by changes to the level of family incomes.
    Keywords: Income Distribution; Policy Evaluation; Oaxaca-Blinder; Heckit
    JEL: D0 B21 C5 C81 C8 O12
    Date: 2009–09
  3. By: Herings P. Jean-Jacques; Peeters Ronald; Yang Michael S. (METEOR)
    Abstract: This paper uses a dynamic stochastic model to solve for the optimal pricing policy of themusic recording companies in the presence of P2P file-sharing networks eroding their CDsales. We employ a policy iteration algorithm on a discretized state space to numericallycompute the optimal price policy. The realistically calibrated model reflects the real-worldfigures we observe and provides estimates of figures we can not observe, such as changesin total welfare. The results suggest that, thanks to the existence of P2P networks, totalwelfare in 2008 in the U.S. is about $25.6 billion more per annum than in 1999 before P2Pwas introduced. Moreover, the results predict that the current trend of decreasing CDsales will continue until around the year 2020 when it will stabilize at around 231.2 millioncopies per year, comparing to the industry all-time high of 938.9 million in 1999. Thecomparative static analysis shows that full enforcement of intellectual property rights,although helpful for the industrial profit, may have adverse effect on total welfare.
    Keywords: microeconomics ;
    Date: 2009
  4. By: Antonio Lopolito; Maurizio Prosperi; Roberta Sisto
    Date: 2009–09

This nep-cmp issue is ©2009 by Stan Miles. It is provided as is without any express or implied warranty. It may be freely redistributed in whole or in part for any purpose. If distributed in part, please include this notice.
General information on the NEP project can be found at For comments please write to the director of NEP, Marco Novarese at <>. Put “NEP” in the subject, otherwise your mail may be rejected.
NEP’s infrastructure is sponsored by the School of Economics and Finance of Massey University in New Zealand.