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2 Annals of Computer Science and Information Systems

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Group Decision Support for e-Mail Service Optimization through Information Technology Infrastructure Library Framework

Mitev Yasen, Kirilov Leoneed

Annals of Computer Science and Information Systems

2021

Vol. 25

227--230

The e-mail service takes significant part at the corporate collaboration due to its natural benefits like: unification, traceability and the ease of use. To ensure that such a fundamental service is functioning and being maintained right, proper methods for measuring its efficiency and reliability are in place. In this paper we propose a group decision support that allows the IT Management staff to choose proper asset of key performance indicators (KPIs) for measuring the operational performance of the service in a specific organization. A comprehensive set of KPI indicators is proposed for quality assessment of e-mail service. The optimization of the service is done within ITIL framework

A Two-Stage Monte Carlo Approach for Optimization of Bimetallic Nanostructures

Mikhov Rossen, Myasnichenko Vladimir, Kirilov Leoneed, Sdobnyakov Nickolay, Matrenin Pavel, Sokolov Denis, Fidanova Stefka

Annals of Computer Science and Information Systems

2020

Vol. 21

285--288

In this paper we propose a two-stage lattice Monte Carlo approach for optimization of bimetallic nanoalloys: simulated annealing on a larger lattice, followed by simulated diffusion. Both algorithms are fairly similar in structure, but their combination was found to give significantly better solutions than simulated annealing alone. We also discuss how to tune the parameters of the algorithms so that they work together optimally.