Browse

Recent Submissions

Now showing 1 - 5 of 5
  • Publication
    European Transport / Trasporti Europei (2000) 14/VI
    (EUT Edizioni Università di Trieste, 2000)
      654  819
  • Publication
    Deregulating the economy: centralized vs. market - like systems. The principal-agent perspective applied to the transport sector
    (EUT Edizioni Università di Trieste, 2000)
    Mazzarino, Marco
    In the paper, the existence of coordination mechanisms capable of achieving Pareto efficiency under uncertainty conditions (information asymmetry) is investigated. Referring to the deregu¬lation processes under way within the transport system, coordination mechanisms are modelled as principal-agent relationships, public sector being the principal and private operators being agents. It is shown that optimum incentive-compatible mechani¬sms (Nash equilibria) in a deregulated system leads to an inefficient allocation of resources unless agents are risk-neutral. It is also shown that using information as a strategic resource there is some room for efficiency improvement by monitoring agents and by repeating the agency relationship over time.
      1195  673
  • Publication
    Electronic commerce techniques for process change in an integrated supply chain
    (EUT Edizioni Università di Trieste, 2000)
    Čišić, D.
    ;
    Komadina, P.
    ;
    Baričević, H.
    Use of an economic metaphor for a usage of the computer aided logistic organization leads to motivating self-interested parties to achieve mutual satisfactory and efficient outcomes. Efficiency, in this sense, is maximized when redistributing the trade surplus leaves everyone at least as well as before. Simulation of economic aspects of transport logistic chain is currently under the way at Rijeka College of Maritime Studies. The system consisted of 24 different types of organizations and 103 different documents interchanged in the supply chain. The primary aspects were transaction costs and vertical integra¬tion using electronic aided logistics and electronic documents. The paper introduces results of the research showing savings up to 1,2 % of GDP for any country. The savings have been calculated for each organisation type, showing it's structural position in the supply chain.
      1097  615
  • Publication
    Infrastructure policy and spacial imbalance
    (EUT Edizioni Università di Trieste, 2000)
    Laks, Rene
    ;
    Nijkamp, Peter
    This paper addresses the impacts of transportation infrastructure. Various definitions, effects and caveats are dealt with. The arguments will be illustrated by a case study in Hungary. A historical and political description of Hungarian transport policy is given. The Hungarian infrastructure policy has shown an unprecedented dynamics. In the past years a great many new initiatives have been launched. These plans concern mainly road infrastructure, but also railways ail over the country. It is noteworthy that infrastruc¬ture policy is also playing an important role in regional development policy. The successes have shown a gradual improvement, so that equity policy and efficiency objectives are running in parallel.
      1191  801
  • Publication
    Using a spreadsheet to find the steady state of a Markov process
    (EUT Edizioni Università di Trieste, 2000)
    Cottrell, Wayne D.
    A macro, which automatically executes a series of spreadsheet software commands, is developed to find the steady-state condition of a Markov decision process (MDP). The typical infrastructure management approach is to assess system conditions, then select and implement mitigating strategies with the joint objectives of maximizing benefits and minimizing costs. Infrastructure management decisions must often be made under conditions of uncertainty, making a probabilistic model of the system useful. An MDP is a relatively simple model that exhibits stochastic dependence — stochastic in that future conditions are based on probabilities, and "memoryless" dependence in that the next condition is based only on the existing state. One of the features of an MDP is the achievement of a steady state following repeated applications of a management policy. Toward facilitating the analytical requirements of an MDP, a computerized procedure to determine the steady-state condition of an MDP is developed. The procedure might serve as one component of a complete MDP-based infrastructure management system. A comprehensive system would also compute the rewards and costs associated with a given policy and determine the optimal policy, possibly through a linear programming formulation.
      1368  1006