2019 VOLUME 39 - No. 2CONTENTS:MODELING AND IDENTIFICATIONT.A. Aliev, N.F. Musaeva, M.T. Suleymanova. Algorithms for determining the confidence interval of the estimates of distribution density of the noise of a noisy signalT.A. Aliev, T.A. Babayev, T.A. Alizada, N.E. Rzayeva. Noise control of the beginning and development dynamics of accidents in rail transportH.A. Jafarova, R.T. Aliyev, T.N. Abdullayev. Analysis of the Relationship between USDX and Gold Prices in RM.N. Imanova. On some connection between the definite and indefinite integralsY.R. Ashrafova. On one method of block transfer of conditions for a system of three-step discrete processes connected only by boundary conditionsE.M. Farhadzadeh, A.Z. Muradaliyev, T.K. Rafiyeva, A.A. Rustamova. Improving the system for the management of the efficiency of power engineering devicesA.B. Pashayev, E.N. Sabziev, T.A. Alizada, U.M. Kadasheva. A method for describing the terrain to determine the effective flight path of a droneN.O. Mammadli. An algorithm for the construction of suboptimistic and subpessimistic solutions of a mixed integer knapsack problem with interval dataM.U. Chirakhova. On one linear problem of optimal control of Volterra-type systems of differenceM.Y. Najafova. Necessary and sufficient optimality conditions in one discrete non-local optimal control problemA.S. Aliyeva. Identification of multiconnected dynamic objects with uncertainty based on neural technology and reference convertersINFORMATION TECHNOLOGY AND SYSTEMSE.R. Aliyev, D.B. Gakh, Kh.Kh. Abdullayev. Implementation of three-state logic using the specialized SmartBool structure in the C# programming languageN.T. Mardanov. Monitoring of the technical condition of the rotating machinesS.G. Hidayatzade. Comparative analysis of qualitative indicators of Jeyranbatan reservoir