Information Technologies and Mathematical Modelling - Queueing Theory and Applications

2019 ◽  
Vol 21 (5) ◽  
pp. 86-111 ◽  
Author(s):  
E. A. Perminov ◽  
D. D. Gadjiev ◽  
M. M. Abdurazakov

Introduction. The era of post-industrial society of knowledge differs from the previous socio-economic period in many important aspects: total digitalisation, automation and robotisation, and furthermore, cross-disciplinary integration of various scientific fields, among which mathematics is of particular relevance. Over the last decades, the language, tools and methods of the digital era have emerged as the basic universal research tools in physics, biology, chemistry, and engineering, organisation of production and in many other theoretical and applied spheres of activity. Against the background of progressively advanced mathematisation, which covers larger functional intellectual space, it is extremely important to provide the fundamental, advancing nature of mathematical training of students, including in the first place the students of the pedagogical directions. The graduates of pedagogical higher education institutions will have not only to convey certain academic educational information, but to coordinate educational trajectories according to a training maxim in their lifetime that is hardly possible without understanding of basic mathematics.The aim of the present publication is to discuss methodological, culturological and didactic aspects of mathematical training of students of the pedagogical directions.Methodology and research methods. In the course of the work, the authors used the provisions and requirements of the new Federal State Educational Standards (FSES). The psychological and pedagogical framework of the research is based on the concepts of developing learning and upbringing, vocational and pedagogical orientation of training of future teachers and the idea of lifelong education. The analytical review and synthesis of the content of philosophical, mathematical, pedagogical, methodological literature and normative documents was conducted. The state of mathematical components of pedagogical education and its ways of fundamentalisation were considered according to the theory of training, comparative, culturological and system-based types of analysis.Results and scientific novelty. The authors note the imbalance between the fundamental mathematical preparation, which is relevant for a modern person, and the competency-based approach, which currently dominates in education and constraints to students’ holistic understanding of mathematical area of knowledge, even within the boundaries of a particular discipline. The situation is exacerbated by an avalanche distribution of information technologies. One of the negative consequences of this situation is replacement of meaningful learning of mathematics with “coaching” of school students and university students for formal test performance. To address these challenges, culturological educational models, which form common cultural ideas of modern mathematics according to the principle of a cultural conformity, have to be the predominant in education, but not competency-based attitudes focused on narrow specialisation. Mathematical modelling, discrete mathematics and computation processes are identified as the most significant components of a new stage of universal mathematical culture evolution. As a result of a digital era, general-education concepts have already become the key concepts of various sections of mathematics, therefore, it is necessary to start a general introduction to the study of these concepts at the stages of school education.It is highlighted that fundamentalisation of mathematical preparation plays the leading role in the development of logical and professional innovative thinking of students through the understanding of multifunctional structures and schemes (as means and knowledge methods) similar to mathematical structures and schemes. It is appropriately useful to include special courses into a variable part of the master’s programmes (according to education directions), implying students’ research activities: “Mathematical Modelling in Professional Education”, “Bases of Modern Mathematical Culture”, “Discrete Mathematics”, “Mathematical Bases of the System Analysis”, etc.The authors are convinced that the introduction of the concept of mathematical preparation, based on the culturological and system-based approaches, will help to resolve an apparent contradiction between, on the one hand, the necessary integration and fundamentalisation of knowledge acquired by students, and, on the other hand, the disciplinary dissociations of educational material, shortcomings of competency-based training and formal use of information technologies.Practical significance. The materials of the publication can be useful for future and practicing teachers of mathematics, computer science and related academic disciplines. Moreover, the present publication can be used by education professionals interested in improving the education quality.


2014 ◽  
Vol 60 (4) ◽  
pp. 19-28 ◽  
Author(s):  
Lukas Chabal ◽  
Stefan Stanko

AbstractConstruction of a sewer system on a flat area is characterized by a large number of pumping stations (PS), which implies the probability of occurrence of technical problems and increases operational costs. The article focuses on drainage methods for municipalities situated on a flat area where it is necessary to build up a large number of pumping stations. Problems occur in case of multiple serial, parallel or combined connections of PSs. Energy costs can outweigh other costs, especially if the PS runs more than 2000 hours per year (Wilson et al., 2010). It has been shown that there is a large technical and economic potential for energy savings in sewage pumping. The pumping of waste waters in Slovakia is mostly based on the START-STOP method. This means that the pumps operate at all times at full power. In practice, we can also meet with oversizing of pumps. These and other facts lead to increased power consumption.Also rainwater infiltration and “black” stormwater connections belong to significant present problems in sewer system operation. Large amounts of storm water in a sewerage PS lead to increasing intensity of wastewater pumping, which is reflected in increasing operational costs.Optimization of such sewer system is based on mathematical modelling and was implemented in the “Ivanka pri Dunaji” municipality, close to Bratislava - the capital of Slovakia where the above mentioned problems in wastewater discharge cause considerable operating costs and inefficient performance of the system as a whole for a long time. Due to the enormous houses development, the system is inadequately loaded by rain waters as well. Also poor discipline of property owners contributes to the inauspicious situation to a great extent. Despite a ban of connections, paved areas are drained into the sewage system very often. The identification of such connections is very problematic with regard to ownership rights. Rain waters in sewages can degrade the quality of wastewaters, increase operating costs of pumping and reduce system life cycle. It was demonstrated by mathematical modelling that with the use of information technologies, it is possible to make the existing sewerage systems more effective or propose a new system of pumping and discharging waste waters.


2017 ◽  
pp. 49-55
Author(s):  
Nataliya Melnyk ◽  
Mykola Dyvak ◽  
Maryna Nahara

Introduction. The features of functioning of the retail computer market in Ukraine are considered in the article. The models of the computer market are analysed. The ways of modification of its models are offered. Purpose. The article aims to develop a conceptual approach for modelling of the retail computer market technology. It should consider the changes in the information technologies. Method (methodology). The methods of system analysis, method of economic and mathematical modelling and method of optimization have been used in this research. Results. A modified model for describing the distribution of the market in the context of changing trends has been developed. With the help of modelling we have obtained the forecast of the market distribution for different cases of its usage. The directions of further research have been determined.


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