ISSN 0236-235X (P)
ISSN 2311-2735 (E)

Journal influence

Higher Attestation Commission (VAK) - К1 quartile
Russian Science Citation Index (RSCI)

Bookmark

Next issue

2
Publication date:
16 June 2024

Journal articles №1 2017

21. Development and implementation of a forecasting model for a chromatic error of galvanized strip polymeric coating [№1 за 2017 год]
Authors: V.M. Oskolkov (vasiliy_oskolkov@outlook.com) - Cherepovets State University; I.A. Varfolomeev (igor.varf@gmail.com) - Cherepovets State University (Associate Professor), Ph.D; L.N. Vinogradova (lnvinogradova@bk.ru) - Cherepovets State University (Associate Professor), Ph.D; E.V. Ershov (eve@chsu.ru) - Cherepovets State University (Professor), Ph.D;
Abstract: The article presents the results of the study on quality improvement method for galvanized strip polymeric coating using modelling methods for chromatic deviation reduction. A predictive model of the chromatic deviation consisting of 3 sub-models is proposed; each sub-model predicts one CIELab color space model coordinate. Each sub-model is based on Random Forest machine learning algorithm. Full chromatic deviation output value is calculated from predictive coordinates.. Each sub-model is based on Random Forest machine learning algorithm. The paper considers a decision tree algorithm. It also describes the main parameters affecting chromatic deviation. Those parameters are received from 3 sources: paint certificate values, characteristics of an incoming strip coil for further painting, process parameters. The authors have developed an approach for prompt and efficient integration of the mentioned forecasting model into existing IT infrastructure by model translation into a database. The developed script allows translating the model into programming languages used for industrial control systems (SQL, .NET). The paper describes the following stages of forecasting model translation from R language into SQL language: code generation, filling the tables. Forecasting in a database takes 0,3 seconds which is enough for real time mode production. Application of the developed model allows forecasting chromatic deviation of a polymeric coating with a mean error of 6,1 %.
Keywords: model integration, code generation, random forest, regression, decision tree, forecasting, chromatic aberration, pre coated rolling, polymer coating, coil coating
Visitors: 7478

22. Program for heat conditions identification in flat products [№1 за 2017 год]
Authors: Margolis B.I. (borismargolis@yandex.ru) - Tver State Technical University, Ph.D;
Abstract: The article considers the problem statement on identification of heat transfer conditions for flat products with asymmetrical shapes convective-radiative heat transfer surfaces to the environment and enclosing surfaces (heating elements) of the process equipment. The paper formulates a possible solution of the problem in Matlab. The program, which has been developed based on the standard fmincon function in MatLab, allows identifying the part of radiation heat transfer energy, which gets from a furnace surface to the product in each zone. For this purpose it uses predetermined thermo-physical characteristics of the material (thermal conductivity, thermal diffusivity), the parameters of convective-radiative heat transfer (coefficients of convective heat transfer and an emissivity factor) and the temperature and time parameters on an annealing furnace. The paper presents an example of radiative heat transfer parameter identification in an annealing furnace for rolled glass sheet on the basis of the temperature field simulation program in Matlab. The authors consider the features of program development related to the need to take into account changing initial and boundary conditions at each stage of the temperature-time mode of an annealing product using pdebeg and pdebound of the standard functions pdepe in MatLab. There are software codes of functions and main program, as well as the results of calculating band surface temperatures and emissivity factors of a furnace surface. There is the analysis of the results of the program. The paper demonstrates good agreement between the obtained emissivity factors and their physically reasonable values for radiative heat transfer in glass annealing furnaces. The paper shows the prospects of using standard Matlab functions to solve product heat treatment mode optimization problems in various technological processes.
Keywords: identification of heat transfer conditions, flat shape product, convective-radiant heat transfer, degree of blackness, initial and boundary conditions, modeling, a tempering, temperature-time mode, heat treatment optimization
Visitors: 10440

23. Professional training of ships’ personnel in the system of military product life cycle [№1 за 2017 год]
Authors: Losev E.F. (losev1947@mail.ru) - Military Sciencу and Education Centre of the Navy “Naval Academy named after the Soviet Union Fleet Admiral N.G. Kuznetsov” (Kaliningrad branch) (Professor), Ph.D; Kuznetsov I.V. (89817190035@mail.ru) - Military Institute of Continuing Professional Education of the VUNTS Navy "Naval Academy" (captain 2st rang), Ph.D; A.A. Bavula (bavel_@mail.ru) - “Soviet Union Fleet Admiral N.G. Kuznetsov Naval Academy” of the Navy Military Educational and Scientific Centre (Kaliningrad branch) (captain 2st rank, adjunct); I.A. Burik (bavel_@mail.ru) - “Soviet Union Fleet Admiral N.G. Kuznetsov Naval Academy” of the Navy Military Educational and Scientific Centre (Kaliningrad branch) (captain 1st rank, Head of Chair);
Abstract: The article discusses personnel training in a military life-cycle management system based on the so-called “end-to-end life cycle contracts”. The authors propose a conceptual model of a military life-cycle management system with integration professional training of surface ships’ personnel of communication departments into a common information space. The paper presents a critical aspect of the integrated simulator of ship's communicators “Tribe-S”. The authors analyze foreign and historical experience of military professional training. They assess the quality of personnel training based on virtual environment simulation learning of navy crews during transition to end-to-end life cycle contracts. The authors suggest that the virtual environment simulation will allow trainees to acquire unique skills in a variety of emergency situations, which sometimes is not possible to gain in a traditional learning process. The authors also consider that the contracts based on military production life-cycle management will increase the military pre-paredness of a ship in general and will improve the quality of service staff professional education. The exploitation of a communica-tion system supplied to the Navy will decrease the number of facilitators significantly. The transition to these contracts will allow more efficient use of huge funds allocated to defending our country.
Keywords: professional training, military products life cycle, modeling of virtual learning environment
Visitors: 5964

← Preview | 1 | 2 | 3