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Byline: Nicolaos Protogeros, Panayiotis Tahinakis, John Mylonakis, Dimitrios Gagalis Supply chain management constitutes a relatively new and promising field of management science, affecting greatly the efficiency of Greek enterprises. The objective of this research is to detect the range of SCM applications in Greece; the trends and views of Greek enterprises in relation to efficiency, difficulties, costs, benefits and necessity, as these were generated from the implementation of one or more SMC applications. Enterprise Resource Planning (ERP) has now proven to be an indispensable backbone for most Greek enterprises. Enterprises on the whole have stated that they have proceeded to a combination of ERP and Best of Bread systems. However, despite the valuable benefits featuring the selection of Application Service Providers - ASP (leasing of SCM applications), it has been found that this solution has not matured yet in the consciousness of Greek companies. The great majority considers it either unattractive or slightly attractive.

Byline: Panayiotis Tahinakis, John Mylonakis, Nicolaos Protogeros The taxation system exerts substantial influence to the economic activity. Taxes, among others, influence work, saving, investments and the undertaking of business activity. This paper constitutes a study with regard to the issue of the e-government and its evolutionary course during the new era of Information Technology (IT) and the internet, and more specifically the role that it plays in the modernisation of the Hellenic taxation system. Moreover, the influence of the e-government to the application of modern information systems that support direct and indirect taxation is examined and the respective tax controls procedures as well. Furthermore, certain proposals are outlined with regard to the technological reform of the taxation system and the transition to the digital era on the basis of the adoption of new methodologies and practices. The easy-to-use operation systems and the low-cost communication channels (internet), the function of electronic tax processes (TAXISnet) and the increased participation of taxpayers will create a socio-economic environment, which is predicted to satisfy both the tax administration and the taxpayers.

Byline: Nicolaos Protogeros, John Mylonakis, Panayiotis Tahinakis, Dimitrios Ginoglou This paper presents a formalised negotiation methodology for distributed sales schedule optimisation. The purpose is to solve the optimisation problem, taking into account constraints such as the salesmen capacity and income increase in a uniform way and the company's turnover increase. In this approach a sales schedule is developed dynamically by all of the concerned participants. The negotiation methodology used allows agents to negotiate with other agents in a certain geographical area based on their sales capacity, commission percentage and the area's sales turnover. A simulation model based on Repast3 has been developed to evaluate the algorithm accuracy and the system's convergence. By executing this prototype with various utility functions, interesting results have been achieved showing a convergence in total company's turnover, salesmen capacity and salesman income.