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Elaboration and research of models and algorithms to increasing the utilization efficiency of local area networks

Author: Andronatiev Victor
Degree:doctor of economics
Speciality: 08.00.13 - Economico-Mathematical Methods
Scientific adviser: Ion Bolun
doctor habilitat, professor
Institution: Academy of Economic Studies of Moldova
Scientific council: D 32-08.00.13-26.02.04
Academy of Economic Studies of Moldova


The thesis was presented on the 30 October, 2009
Approved by NCAA on the 18 March, 2010


Adobe PDF document0.83 Mb / in romanian


economic efficiency, criterion, model, algorithm, computer network, xEthernet technology, physical configuration, dynamic distribution of peripheral memory.


The thesis contains the introduction, four chapters, conclusions and recommendations, the bibliography of 146 titles, 8 annexes and consists of 192 pages, including 41 figures and 34 tables. Obtained results are published in 10 scientific papers.

The aim of this work consists in increasing the efficiency of the use of xEthernet technology local area network resources. Achieving this goal involves the following major objectives: elucidation of the research aspects; argumentation of the set of economic efficiency indicators; elaboration of the economic-mathematical models, algorithms and informatics applications for the capitalization of local area networks resources.

The methodology of scientific research is based on methods of economic-mathematical modeling, the theory of economic efficiency, the theory of operational researches, the queuing theory, the theory of algorithms and the theory of computer networks.

The scientific novelty and originality of obtained results consist in: formulation of the problem for increasing the efficiency of the use of local area network resources; argumentation for decreasing the set of indicators for the evaluation of local area network resources’ using efficiency; determining the correlation between the Total Cost of Ownership and the Equivalent Annual Expenditures indicators; elaboration of analytic models for the investigation of Ethernet local area networks fragmentation’s economic effects and the ascertainments on the their basis; the elaboration of economic-mathematical models and algorithms for the capitalization of local area networks resources.

The theoretical signification consists in decreasing the complexity of the problem of local area network resources’ capitalization and subnetwork configuration, and elaborated models and algorithms permit the significant improvement of known quasi optimal solutions.

The practical value of the work: the majority of models and algorithms are realized in informatics applications, inclusive ConfMedE and DistribMem, and permit the improvement of the use of local area networks’ resources by more than 8%. The scientific results of the work are implemented in the Informatics network and the computer assisted training of students of the Academy of Economic Studies of Moldova.