DESIGNING REFERENCE INFORMATION SYSTEM FOR MEDICAL LABORATORY
E.Y. Sobolevskaya, D.A. Kiikova
The article is discusses to the design of a reference information system for a medical laboratory evidence from «Unilab» LLC, Vladivostok. According to research of existing medical information systems, mainly implemented systems is used in medical organizations in which patients are receiving, or there are directories that do not meet the requirements of the laboratory. The system under review will provide access to complete and up-to-date medical research information to company employees, improve the quality of call center consultations, and speed up the introduction of changes to medical research information on the company’s website and in 1C system. As a result of the work, user classes were identified and their characteristics described, requirements (business requirements, user requirements, functional requirements) of users were identified using the following methods: interviewing, document analysis, analysis of the user interface of the company’s information systems. The reference information system was designed using the UML modeling language according to the identified requirements according to the ICONIX methodology, the following diagrams were presented: use case diagrams, suitability diagrams, sequence diagrams, and a class diagram. In addition to the diagrams of the selected methodology, a contextual data flows diagram was constructed. Designed prototypes of user interfaces (block diagrams of pages).
Keywords: reference information system, designing, information technology, ICONIX, medical laboratory, healthcare digitalization.
CALCULATION OF INDICATORS OF THE INFORMATION CONTENT FOR USER INTERFACES
A.N. Morozov, V.S. Zarubin, S.A. Grishin
The problem of evaluating the quality of user interfaces of computer programs is considered. Indicators of the overal and relative information content of user interfaces are proposed, their mathematical model is developed, and analytical expressions for calculation are obtained. Most often, an indicator of the quality of user interfaces is understood as a function of the total time of elementary operations on its elements spent by the user to solve a specific task. Interface elements are understood as information interaction objects – input fields, icons, various types of lists, tables, and so on. Basic operations are understood as actions with them – finding, reaching, and managing. The entire set of elementary actions for solving a specific task is called the task profile. It is convenient to use time indicators to get generalized values of the interface quality indicator both in General and at each step of the profile (on the principle that the shorter the time or the number of operations, the better). But they answer the question “how much”, not “why”. Why, for example, can a task profile have a greater number of steps but a shorter execution time compared to a similar one? In General, interface elements make up a complex system with multidimensional relationships by belonging to a particular task, by importance, by frequency and method of use, and so on. Therefore, an attempt to randomly change the configuration of the monitor screen in order to optimize actions at a particular step may lead to changes in the time values at the remaining steps of the profile with unpredictable results. One of the ways to solve the problem of analyzing and/or optimizing interfaces is to develop quality indicators that operate on the characteristics of the overall layout of interfaces, in particular the number, size, and location of elements on the monitor screen. These indicators include the proposed indicators of overall and relative information content.
Keywords: computer program, user interface, analysis, quality indicator, indicator of overall information content, indicator of relative information content.
PREDICTING CORONARY HEART DISEASE IN LOCOMOTIVE CREW EMPLOYEES BASED ON HYBRID FUZZY MODELS
N.A. Korenevsky, D.A. Mednikov, S.N. Rodionova, V.V. Starodubtsev
The aim of the study is to improve the quality of predicting coronary heart disease in railway locomotive crews by developing hybrid fuzzy mathematical models that work under conditions of incomplete and fuzzy description of the object of research. Taking into account the poorly formalized structure of the studied class of States, the technology of soft computing and, in particular, the methodology for the synthesis of hybrid fuzzy decision rules, which has proven itself well in solving problems with a similar data structure and type of uncertainty, is chosen as the basic mathematical apparatus. The chosen synthesis method allows us to take into account the multiplicative effect of heterogeneous and unstable endogenous and exogenous risk factors on the human body in the locomotive cabs. The obtained mathematical models for predicting ischemic heart disease in locomotive crew workers take into account cabin ergonomics, levels of psycho-emotional stress and fatigue, mixed electromagnetic fields in combination with individual risk factors for systemic ischemic damage as initial data. In the course of mathematical modeling and expert evaluation, it was shown that the obtained predictive model provides confidence in the correct forecast of at least 0.89, which is a fairly “good” result for medical diagnostics tasks.
Keywords: mathematical model, fuzzy logic, forecasting, locomotive crew, coronary heart disease.
ONE OF THE ASPECTS OF DEVELOPING A UNIVERSAL TASK DESIGNER FOR TRAINING SYSTEMS
V.V. Salnikov, M.N. Kravtsov
The paper considers the issue of building a block hierarchy of software and information models that simulate the subject area in training systems, based on the principle from simple to complex, from elementary functions to more complex ones. This allows us to implement the principle of adaptability in training systems – the ability to manage the complexity of the training process depending on the competence of the trainee. An approach to the construction of a universal task constructor for training systems based on the representation of the training process in the form of changing a finite number of parameters of the training block by affecting it by the trainee is proposed. The training block in this setting is considered as a set of parameters of various types. A method for evaluating the training process is proposed, which involves checking the state of the block at the end of training, that is, checking whether the parameter values match the specified ones. It allows you to create flexible systems for evaluating knowledge. Correlation of certain parameters with the skills of the trainee allows automating the process of controlling the level of his subject competence and makes it possible to implement the principle of adaptability of training systems, which consists in a gradual increase in the complexity of the training process. A prototype of a universal task designer for training systems is presented. Its use significantly simplifies task editing, neglecting the use of programming environments.
Keywords: training, training, training process, training systems, simulator, task modeling.
TECHNIQUE FOR A QUICKLY DEPLOYED COMMUNICATION NETWORK CREATION BASED ON RADIO RELAY LINES
Radio relay communication plays an important role in the creation of digital infrastructure. Modern digital radio relay lines allow organizing high-speed communication channels supporting the transmission of all types of traffic, including voice messages, packet data transmission, and video signals in real time. The article discusses methods for calculating digital radio relay communication lines, and also provides general recommendations for organizing digital radio relay communication lines. The design of radio relay lines is carried out in such a way that they have high bandwidth and high reliability, taking into account the physical (energy) and channel-network capabilities of the system. The calculation method requires determining the energy parameters, deriving the form of the quality equation, calculating the performance criteria and methods for calculating the attenuation of radio waves at radio relay intervals. The possibility of using MPLS-technology in the radio relay communication was positively assessed. The radio relay network routing system is based on multiplexing streams with a protection mechanism at the channel and network levels. Continuous adaptive modulation mode allows flexible QAM rate change, allowing continuous traffic. The redundancy according to the «1+1» and «2+0» schemes is considered. This scheme doubles the system throughput and prioritizes traffic. The technique allows you to build a digital radio relay network with flexible changes in both physical and network parameters.
Keywords: radio relay network, radio relay lines, calculation methods, quality indicators, radio wave propagation, packet delivery route.
THE COMPUTER MODEL OF THE MATRIX PHOTODETECTOR
V.S. Feshchenko, V.G. Surinov, V.I. Chukita, V.A. Shepelev
The variety of applications, heterogeneity of physical processes taking place during the passage of information through modern photodetector devices, create significant difficulties in conducting field experiments on them during their development and research. This is especially evident at the stage of development of the advance project, when there is absent only the photodetector itself, but also the very concept of building the device. In this case, it is especially important to carry out the process of mathematical modeling and build a computer model of the proposed photodetector in order to select its layout, optimal parameters and operating modes. This paper describes the development of a computer model of a matrix photodetector or FPA starting from the first stage, the stage of creating a primary vision of an object or system. At this stage, the main components of the FPA, the relationship between them, input, output and control signals were determined. Thus, a conceptual model was built, which reflects in an idealized form the composition and principle of operation of the FPA. At the next stage, on the basis of the conceptual model, a mathematical model of the FPA was developed, checked for adequacy and concluded that the expected deviation of the characteristics of the model from the parameters of the real device was small. Finally, at the last stage, a software implementation of the mathematical model in MATLAB was carried out and a computer model was obtained. Further, in order to check the performance of this computer model, the dependences of the image quality of the FPA on various physical and structural parameters were investigated and it was concluded that this model can be used at the initial stage of the development of the FPA to develop technical requirements for it and compare different layout options.
Keywords: computer modeling, FPA, image conversion, mathematical modeling, photodetector.
STAFF PERFORMANCE MANAGEMENT IN THE CONTEXT OF DIGITAL TRANSFORMATION OF ORGANIZATIONAL SYSTEMS
The article examines the characteristic changes in the staff activity in the conditions of digital transformation of organizational systems. It is shown that the changes are primarily related to the increasing role of the enterprise information system, which provides all types of interaction between the structural components of a new type of organization. With the functioning of the information system itself as a man-machine system, the importance of the effectiveness of staff activities increases. It is proposed to consider the process of staff performance management from the point of view of ensuring its adaptation to new labor functions in the conditions of digital transformation of organizational systems. The components of educational resources for basic and practice-oriented staff training are considered as management tools. The expediency of management decisions based on the optimization approach is proved. A sequence of tasks of reduction, aggregation-balance and resource optimization is formed, which allows you to choose a solution for a variety of thematic modules of preparation for performing labor functions in the conditions of digital transformation, taking into account balance and resource constraints. The resulting solution allows you to solve the task of managing the effectiveness of personnel activities, taking into account the types of activities and labor functions that differ significantly from the traditional ones.
Keywords: management, digital transformation, organizational system, optimization, educational resources.
SIMULATION MODEL OF THE RADAR ENVIRONMENT OF AN INTELLIGENT CONTROL SYSTEM FOR DISTRIBUTED RADAR FACILITIES
M.B. Sergeev, A.A. Sentsov, E.K. Grigoriev, S.A. Nenashev
The beginning of the mass use of small unmanned aerial vehicles for various purposes gave rise to the problem of their safe and controlled movement in space. Accordingly, the challenge arises of constructing new intelligent control systems. In the approximate list of actions that these systems should carry out, you can specify the control of the operating modes of each data source for scanning the airspace, obtaining information about moving objects, calculating the coordinates and direction of movement (component velocity vectors) from the processed data, as well as predicting the position of the air object to decide on the issuance of information to paired systems. The article describes the modeling process of a distributed system consisting of two mobile radar stations, applicable for developing methods for detecting and estimating the coordinates of airborne objects. For the simulation model being developed, analytical relationships are obtained for calculating the coordinates of the observed physical objects using both range-finding information and goniometric. A block diagram of the modeling steps for determining the trajectory coordinates of the object is proposed. The expediency of using a distributed system in order to improve the accuracy of measuring trajectory coordinates is shown. Various options for the location of spaced observation points are proposed, as well as their advantages and disadvantages. The model is built taking into account experimental data obtained from a simulator of an air moving object. The developed simulation model is designed to conduct experiments, as well as to determine the performance characteristics at the stage of development of functional interactions of the intelligent control system for distributed mobile devices.
Keywords: determination of coordinates, air object, two-position system, radar system, complex information processing, simulation model.
SIMULATION OF EPIDEMICS: AGENT-BASED APPROACH
UDC 004.94, 616.9
The consequences of the epidemics can be extremely negative, causing significant social and economic losses. The perspectivity of using agent-based models for these purposes are substantiated using agent-based models of epidemics developed by foreign researchers as examples. An analysis of the architecture of agent-based models of epidemics is carried out, which allows determining the key components for modeling epidemic processes. The advantages of the agent-based approach of simulation are identified, which allow modeling the dynamics of the infectious diseases spread in a heterogeneous synthetic population as close to real society as possible, as well as reproducing numbers of patterns and mechanisms of transmission of specific contagious diseases, taking into account demographic, socio-economic and spatial factors. Applying the agent-based approach provides an opportunity to study the progression of epidemic and infectious processes at a micro-level, as well as run scenarios of epidemic outbreaks, test varied strategies for controlling the epidemic, and assess the impact of multicomponent intervention strategies on the epidemic dynamics.
Keywords: agent-based modeling, computational epidemiology, agent-based models of the epidemic spread.
DISTRIBUTION MODEL OF VOLUMES AND PRICING OF A MATERIAL FLOW IN THE LOGISTIC CHAIN “THE PRODUCER – END USER”
A.S. Dulesov, I.A. Gimanova, O.L. Melnikova, V.I. Yakovchenko
The work considers the construction of an economic and mathematical distribution model of volumes and pricing in logistic channels of the single-market trade-brokerage network. The logistic chain “the producer – the end user” is investigated with successively connected agents through micromarkets. Conditions for a model construction are described. Each participant of a network has its own parameters. Special attention is paid to the coefficient of goods sale for each economic agent and for the whole chain. The problems for three and four participants of a sequential chain with a given price distribution and a uniform amount of product promotion are solved in practice (an ideal case that is not available in practice due to the uncertainty of the information in the form of random influences on the dynamics of the indicators). The solution based on the value of indicators is presented, taking into account the purchases/sales experience, individual preferences and the added price of each agent. On the basis of the obtained values of the sales coefficient of goods (when considering the real situation of the goods promotion), conclusions on the further behavior of participants in a chain are presented. The plan is proposed to adjust the results to the demand of the end user. Volumes and coefficients of realization of the goods with respect to balance between supply and demand are determined. The built-in economic and mathematical distribution model of volumes and pricing will make it possible to develop and make the decision on the choice of a transit or warehouse supply chain.
Keywords: modelling, trade-commerce network, demand and supply, logistic chain, сoefficient of goods sale.