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1	Taikomųjų uždavinių kokybės modeliavimas saugioje elektroninių paslaugų sistemoje / Modeling of application quality parameters in a secured electronic service system Šunokas, Robertas 01 June 2004 (has links) While modeling electronic service systems application quality parameters are always relevant. Future system must be reliable in operating, flexible enough in different situations and to have good efficiency. Price is important for system builder. Integrated quality parameter is defined for measuring and evaluation of all other quality parameters. In this work Petri nets architecture is picked as projecting methodology. electronic service information system - E-Government, is created and modeled theoretically. While studying information security methods in every projecting and modeling step we try to valuate these parameters: a) flexibility b) reliability c) performance d) price. While analyzing Petri nets it is required to make and describe information system theoretically. It is analyzed how to find the best way to reach optimal information security features. Application quality parameters are used for that. Informatics Price Kokybės modeliavimas Reliability Taikomieji uždaviniai Kaina Flexibility Application quality parameters Kokybės parametrai Informacijos apsauga Našumas Electronic service Patikimumas Elektroninės paslaugos Lankstumas Performance