Abstract: The subject of research is the process of creating a computer simulation simulating the conducting a clinical laboratory analysis of biological fluids using a biochemical analyzer Stat Fax® 1904+. Particular attention is driven to the components of the training simulator and to the algorithm for work with it. The article presents features of developing the virtual instrument, caused by its teaching assignment, which consist of the different training levels of users of the system and the possibility of incorrect input data. The author proposes to create three types of users and design features of the software to ensure the accuracy of the data and compliance with the algorithm of the virtual appliance. The paper shows stages of making a computer simulator, such as modeling the system, translation of the model and analyzing the results of the development. The author describes concentrations of a substance in a sample simulated by the software and gives the corresponding formulas for calculations. The study presents a flowchart showing the process of operation of the computer program. The geometric design of application forms and functions of the system is based on this flowchart. A computer simulator created can be used in education at the stage of forming practical skills of students as well as raising the level of professionalism of clinical laboratories. The results of the study can be used in creating training simulators not only for biochemical analysis, but also for other areas of professional activities requiring the use of skills in working with high-tech equipment.

Abstract: The article is devoted to the problem of computer simulation of biochemical analysis of biological fluids using the Stat Fax® 1904 + R. The author describes methodology and stages of creating an educational simulator (formulation of the problem, project planning, defining the system, gathering of input data, translation of the model, verification and validation, implementation of the system into the educational process). The article presents main methods for calculation of substances’ concentration, imitated by the computer simulator (based on the standard, factor calculation, multi-point calibration and kinetic characteristics measuring). The author pays significant attention to the interface design of the application’s main window that visualize virtual desktop for carrying out biochemical analysis. The essential elements of the simulated desktop are the images of the device with working keyboard, display, printing area for displaying the results of analysis, tubes (blank, standard, sample) with corresponding buttons, as well as the power button. The task of simulation of the quantitative and qualitative characteristics of the test mixture is solved using random number generator. The results of the presented study can be used in building educational computer simulators not only in medicine but also in other areas of professional activity. 

Abstract: The article is devoted to Joseph Neef’s educational activities who sequentially implemented J.G. Pestalozzi’s ideas in the socio-cultural reality of the New World in early XIX-th century, seeking to do them basic principles of forming system of USA public education. The author examines the contribution to natural education development by the American educator and makes a comparative analysis of pedagogical conceptions of Pestalozzi and J. Neef.