Maximum Achievable Level Research Articles

Методика нахождения параметров переходов обработки резанием в APQP процессе подготовки производства новых автокомпонентов

The article discusses the content of the methodology for assessing the technological state of the machine tool system based on the method of planning experiments for cutting pre-designed and manufactured for special precision characteristics of automotive components of product samples. Using the example of an internal landing hole, the finding of diagnostic components of a special characteristic that are the result of the action of preknown technological factors is considered. Their finding is designed for the use of both shop and coordinate measuring instruments. The obtained regression models of diagnostic components make it possible at various stages of the APQP process to determine the intervals of the cutting process parameters that provide a predetermined margin of accuracy of a special characteristic, or to conclude that the accuracy of the machine system is inadequate. The application of the methodology together with statistical methods of quality management allows to ensure the maximum achievable level of stability of special characteristics in cutting operations, starting with the release of the first serial samples of products. The methodology can be used when selecting and evaluating the technological accuracy of newly purchased equipment in the APQP process of preparing the production of a new automotive component, acceptance of existing equipment after modernization or repair, as well as the audit of the technological process by the auditors of the supplier.

Approaches to assessing reserves to reduce mortality in Russia

The relevance of the study is due to the need for scientific substantiation of target indicators and their quantitative expression in the development of programs to reduce mortality. The purpose of the work: to substantiate approaches to assessing the reserves for reducing mortality using socio-economic, medical, demographic, and behavioral tools. We used official data from Rosstat, international databases on mortality, as well as the results of the sociological study “Demographic well-being in Russia”, which was conducted in late 2019 - early 2020 in 6 federal districts. Different approaches can be used to estimate mortality reduction reserves, depending on the goal. The socio-economic approach makes it possible to assess the potential for increasing life expectancy based on the dynamics of the growth in living standards, as well as social policies in the field of reducing inequality. The medico-demographic approach determines the priority areas of efforts. Behavioral approaches provide insights into maximum achievable levels of life expectancy, while comparing them with self-assessed life expectancy reveals the extent of “hindrances” and key issues that need to be addressed. Russia has a lower life expectancy in comparison with countries with a similar level of economic development. Losses are inadequately high: in men of working age, which is determined primarily by an unhealthy lifestyle; for women - at older ages, depending on the availability and quality of health care. The desired life expectancy of the inhabitants of Russia is only slightly higher than the indicators actually achieved in the most developed countries. Significant declines in life expectancy are associated with poor self-reported health, low levels of education, and lack of employment not only due to lack of work (unemployment), but also due to unwillingness to work. These factors should be taken into account when developing programs to reduce mortality, since in the absence of a need for longevity, it is impossible to motivate people to a healthy lifestyle.

Dependence of the Rate and Completeness of Fibrin Clot Destruction on the Acoustic Dose and Ultrasound Intensity.

The kinetics of fibrin clot destruction under catheter-delivered 32- to 45-kHz ultrasound (US) has been studied at 36°C-38°C in isotonic saline solution. A pseudo-first-order rate constant increased linearly from 0.06/min to 0.57/min with increasing US intensity I0 from 21.6 to 51.2 W/cm2. At I0=4.4 and 11.4 W/cm2, the degree of clot destruction did not exceed 11%-15% regardless of the time of US exposure. Starting from I0=21.6 W/cm2, the maximum achievable level of clot destruction increased linearly with US intensity, reaching 68% at I0=51.2 W/cm2 after 3 min of US exposure. Thus, US intensity is a key parameter determining the maximum achievable level of clot destruction. However, an increase in US intensity above 30 W/cm2 is limited by the intensified negative sonochemical effect on the enzymatic system of hemostasis caused by an increase in inertial cavitation. The best effect can be achieved with ultrasound of a sufficiently high intensity that ensures a large contribution of stable cavitation, generating microstreaming flows, and a minimum contribution of inertial cavitation, generating microjets and shock waves.

When Shared Autonomous Electric Vehicles Meet Microgrids: Citywide Energy-Mobility Orchestration

Problem definition: We develop a crossdisciplinary analytics framework to understand citywide mobility-energy synergy. In particular, we investigate the potential of shared autonomous electric vehicles (SAEVs) for improving the self-sufficiency and resilience of solar-powered urban microgrids. Academic/practical relevance: Our work is motivated by the ever-increasing interconnection of energy and mobility service systems at the urban scale. We propose models and analytics to characterize the dynamics of the SAEV-microgrid service systems, which were largely overlooked by the literature on service operations and vehicle-grid integration (VGI) analysis. Methodology: We develop a space-time-energy network representation of SAEVs. Then, we formulate linear program models to incorporate an array of major operational decisions interconnecting the mobility and energy systems. To preventatively ensure microgrid resilience, we also propose an “N − 1” resilience-constrained fleet dispatch problem to cope with microgrid outages. Results: Combining eight data sources of New York City, our results show that 80,000 SAEVs in place of the current ride-sharing mobility assets can improve the microgrid self-sufficiency by 1.45% (benchmarked against the case without grid support) mainly via the spatial transfer of electricity, which complements conventional VGI. Scaling up the SAEV fleet size to 500,000 increases the microgrid self-sufficiency by 8.85% mainly through temporal energy transfer, which substitutes conventional VGI. We also quantify the potential and trade-offs of SAEVs for peak electricity import reduction and ramping mitigation. In addition, microgrid resilience can be enhanced by SAEVs, but the actual resilience level varies by microgrids and by the hour when grid contingency occurs. The SAEV fleet operator can further maintain the resilience of pivotal microgrid areas at their maximum achievable level with no more than a 1% increase in the fleet repositioning trip length. Managerial implications: Our models and findings demonstrate the potential in deepening the integration of urban mobility and energy service systems toward a smart-city future.

IPO Pricing and Dealers’ Interaction: A Stochastic Frontier Approach

This study investigates the impact of ongoing relationships between underwriters and institutional investors on Initial Public Offerings (IPO) pricing. Differently from previous studies that are focused on allocations of underpriced shares we propose a model of primary market pricing in which the incomplete adjustment of the offer price to its maximum achievable level depends on the intensity of interactions that occurred between players in the years before the IPO. Using a stochastic frontier approach on a sample of 1 677 US IPOs between 2000 and 2016 the paper shows that the more investment banks and investors regularly work together the more the IPO offer price is set closer to the fair value of the issuing firm. This analysis helps to disentangle the ambiguous effects of underwriters’ discretion on IPO primary market pricing when bookbuilding is used. We then support the idea that banks can maximize value to issuers by fostering a regular clientele of investors.

The maximum achievable level of error in measuring the mechanical drilling speed

The article is devoted to the problem of mechanical velocity measurement in deep wells. The standard error limit is set at 2,5 %. However, the existing methods of measurement of drilling parameters have large errors associated with the presence of friction forces in the well, temperature changes with depth, column layout, etc. The error is also introduced by the discrete measurement method, which manifests itself in smoothing of the useful signal and delay in the information about the speed value by half the averaging interval. The aim of the work is to determine the realistically achievable values of the mechanical drilling speed. For this, the reduced error was calculated according to the upper limit of measurement in accordance with GOST. The dependence of the error on the depth of the well and the drilling speed is graphically presented. The error estimation for different type of drilling and different column layout is given. The analysis of the obtained results showed that the set value of the error can be achieved not in the entire range of changes in the speed and depth of the well bottom.

The concept of creating an adaptive sensorless system for monitoring the load of electromechanical equipment

The concept of building sensorless systems for monitoring the load of electromechanical equipment is proposed based on the possibility of determining the instantaneous value of mechanical power based solely on the values of currents and flow connections that determine the operating modes of the machine. A criterion for evaluating the efficiency of an electric machine is proposed in the form of an optimal energy conversion mode, characterized by the theoretically maximum achievable level of the developed mechanical power of energy conversion. It is shown that it is possible to determine the mechanical power developed by an alternating current electric machine based on the flow coupling associated with the winding and the current flowing in this winding. The optimal phase shift angles for the motor and generator modes of operation of an electromechanical energy Converter, which form the maximum mechanical power of energy conversion, are determined.

Anesthesiological management of thoracoscopic operations on lungs and mediastinum

The objective of the review : analysis of innovations in the conceptual justification and methodological support of anesthetic protection of thoracic surgical interventions. Results : optimization of methods of anesthetic protection should be aimed at solving both surgical requirements such as creating conditions for surgical comfort and at the same time, ensuring the maximum achievable level of protection efficiency and patient safety. When solving the problems of patient protection in thoracic surgery in general and thoracoscopic surgery in particular, the special attention is paid to ensuring effective gas exchange and optimal anesthesia methods corresponding to them within the framework of the multi-component concept. It is important to consider that weaning from mechanical ventilation and the careful collapse of the operated lung are absolute indications for thoracoscopic surgery. This approach is used due to the need to provide space in the pleural cavity for instrumental manipulations during surgery.

Penetration Through Slots in Cylindrical Cavities Operating at Fundamental Cavity Modes

In this article, we examine the coupling into an electrically short azimuthal slot on a cylindrical cavity operating at fundamental cavity modal frequencies. We first develop a matched bound formulation through which we can gather information for maximum achievable levels of interior cavity fields. Actual field levels are below this matched bound; therefore, we also develop an unmatched formulation for frequencies below the slot resonance to achieve a better insight on the physics of this coupling. Good agreement is observed between the unmatched formulation, full-wave simulations, and experimental data, providing a validation of our analytical models. We then extend the unmatched formulation to treat an array of slots, found again in good agreement with full-wave simulations. These analytical models can be used to investigate ways to mitigate electromagnetic interference and electromagnetic compatibility effects within cavities.

Computer Simulation of the Angular Distribution of Electrons and Bremsstrahlung Photons in Tantalum Converter

The present work is dedicated to study of the possibilities of improving the production method of 11C and 18F medical isotopes using a linear electron accelerator. Experimental studies of 11C and 18F isotopes production by the photonuclear technique were carried out in [1]. Various targets were irradiated by bremsstrahlung photons following by measurements targets’ activities. This experimental research has been carried out in the energy range from 10 to 40 MeV. The current work studies an angular distribution of bremsstrahlung photons in order to estimate the possibilities of producing maximum achievable levels of medical isotopes 18F and 11С activities. The angular distribution of bremsstrahlung photons is an important property of the irradiation stand which contains an assembly of targets. This important property allows designing necessary changes in the target assembly setup used to produce medical isotopes. The research presented in the current work was done as a computer simulation. The computer software package ‘KIPT’ was developed in С++ programming language, using the Geant4 toolkit in order to obtain the angular distribution of bremsstrahlung photons. Experimental setup materials as well as structural elements positions were defined in the DetectorConstruction class of our program. The parameters of an electron beam were defined in the PrimaryGeneratorAction class. The electron beam diameter was defined as 8 mm, energy Ее=36.7 MeV, corresponding to the real experiment carried out at the “Accelerator” Science and Research Establishment of Kharkiv Institute of Physics and Technology [1]. Models of physical processes occurring while the electron beam crosses the target assembly were defined in the PhysicsList class. All classes and modules necessary for the analysis of simulation results were included to our program together with visualization modules. Visualization modules use the OpenGL graphics library and the Qt5 software to represent the relative position of experimental setup parts and to visualize particle trajectories. As a result of this work, the angular distributions were obtained for the beam of electrons and bremsstrahlung photons directly before the target. This result will allow target assembly parameter optimization for optimal production of medical isotopes by the photonuclear technique.

Rational selection of formulation components to improve dissolution of Dipyridamole

ObjectiveThe aim of the current study was firstly to identify polymers which effectively inhibit precipitation of Dipyridamole (DP), a poorly water-soluble basic drug, in neutral solution. Secondly, to test the viability of formulation approaches where a component is used to enhance the dissolution of DP at a neutral solution, while another component is added to inhibit its precipitation. MethodsThe effectiveness of some Eudragit polymers in inhibition of DP precipitation was evaluated. Solid dispersion technology using enteric polymer, Eudragit L 100-55 (Eu L100-55), or pH-modifier technology employing an appropriate acidifier, Tartaric acid (Tar), were used to enhance the dissolution of DP in neutral solution, while an effective polymer, was added to inhibit the DP precipitation. FT-IR, differential scanning calorimetry and dissolution testing were used to characterize the formulations. ResultsThe results indicated that Eudragit E (Eu E) inhibited DP precipitation the most, probably owing to interaction with DP, as verified by FT-IR. Dissolution results revealed that addition of Eu E to Eu L100-55-based formulations led to an inconsiderable improvement in dissolution rate of DP. But, the inclusion of Eu E into Tar-based formulations exhibited not only stability to precipitation but also higher maximum achievable concentration level of DP, demonstrating more efficiency in offering dissolution benefits in comparison to the predicted dissolution performances which only account for additive influences. ConclusionResults demonstrated that the choice of suitable components with the capacity to act complementary to each other, is vital to the success of the strategy formulation of this work.

When Shared Autonomous Electric Vehicles Meet Microgrids: Citywide Energy-Mobility Orchestration

Motivated by the ever-increasing interconnection of energy and mobility service systems at the urban scale, we develop a cross-disciplinary analytics framework to understand citywide mobility-energy synergy. In particular, we investigate the potential of operating shared autonomous electric vehicles (SAEVs) for improving the self-sufficiency and resilience of solar-powered urban microgrids. We propose models and analytics to characterize the dynamics of the SAEV-microgrid service systems, which were largely overlooked by the literature on service operations and vehicle-grid integration (VGI) analysis. We develop a space-time-energy network representation of SAEVs. Then we formulate linear program models to incorporate an array of main operational decisions interconnecting the mobility and energy systems. The models can efficiently handle large volumes of data and decisions and capture various urban heterogeneities. We also propose an ``N-1'' resilience-constrained fleet dispatch problem. Combining eight sources data of New York City, our results show that even a moderate-sized SAEV fleet can improve microgrid self-sufficiency via the spatial transfer of electricity, which complements conventional VGI, whereas enlisting more SAEVs substitutes conventional VGI by means of providing temporal transfer of electricity. We also quantify the potential of SAEVs for solar power utilization, peak electricity import reduction and ramping mitigation. In addition, microgrid resilience can be significantly enhanced by SAEVs, but the actual resilience level varies by microgrids and by the hour when grid contingency occurs. The SAEV fleet operator can further maintain the resilience of key microgrid areas at their maximum achievable level without significantly compromising the fleet repositioning efficiency. Our models and findings demonstrate the promising and rich potential in deepening the integration of urban mobility and energy service systems towards a smart-city future.

JUSTIFICATION OF RESEARCH ON SYSTEM OPTIMIZATION OF SURGICAL DENTAL CARE TO PATIENTS WITH HIV INFECTION. ANALYTICAL REVIEW OF LITERATURE

The article presents an analysis of the Russian and foreign specialized literature on the problem of dental rehabilitation of patients with HIV infection. It has been revealed that the structure and prevalence of dental surgical pathology in HIV infection has not been studied to date, the indices of the need for treatment of diseases of the dental profile have not been determined. Unsatisfactory access to qualified dental care has been identified, including due to discrimination and stigmatization by health professionals regarding both the disease itself and patients with HIV infection. The urgency of improving the system of rendering surgical dental care to HIV-infected with the aim of ensuring the maximum achievable level of health is substantiated. The data of the presented analytical review represent an important theoretical basis for the development of new tactical approaches to the implementation of the strategic direction of dental implant treatment of people living with HIV to expand access to this medical service.

Experimental study on the interfacial shear stress of RC beams strengthened with prestressed BFRP rod

Abstract On the strengthening of concrete structures by externally bonding prestressed BFRP (basalt fiber reinforced polymer) rod, the release of the prestress may cause an interfacial shear stress concentrated at the prestressed BFRP ends which may cause BFRP prematurely debonding. In order to avoid this problem, the shear stress caused by BFRP prestress should not exceed the interfacial adhesive strength. In this study, the mechanical properties of the adhesive interface at the ends of the BFRP rod which is bonded to the concrete beams are evaluated by experimental studies considering different test methods such as the stretch adhesion test at both ends (double pull-pull test) and prestressed import test (single push-push test). Based on the existing research results, a modified formula is derived to predict the interfacial shear stresses, BFRP stresses and maximum achievable prestress level. The accuracy and validity of the proposed theoretical formula are confirmed by the experimental results. Moreover, an effective method of decreasing the interfacial shear stress is proposed for avoiding the possible premature failure near the BFRP ends caused by the shear stress concentration.

Production of 11C and 18F Isotopes. Getting the “Glucose, 11C “ Radiopharmaceutical

The results of the photonuclear production of 11C and 18F isotopes in various target-matrices are summarized. The studies were performed using linear electron accelerators of the R&DE "Accelerator" NSC KIPT NAS of Ukraine in the energy range 10 -40 MeV to determine the possibilities of obtaining the maximum achievable activity levels of 11C isotopes, and 18F with a view to planning further developments on the creation of radiopharmaceutical for these nuclear isotopes. In the framework of the above approach, we measured the activity levels of the 18F which is transferred to the surrounding aquatic environment during irradiation of targets-matrices of fluoroplastic (C2F4) with bremsstrahlung flux. The release of the 18F isotope into the aquatic environment under the most favorable conditions (in terms of energy and average beam current) was 3.6% of the target-matrices activity - 40 MBq/g, which is a very low figure. Despite the encouraging value of the specific activity of 18F isotope in lithium fluoride (LiF) -77 MBq/g target–matrices and hydrofluoric acid (HF) - close to 100 MBq/g, the process of extracting 18F from C2F4, LiF and HF as basis of the radiopharmaceutical is not sufficiently effective and brings into question the feasibility of such a methodology for producing 18F isotope for further use. More efficient was the production of the 11C isotope in the irradiated target-matrix of the standard therapeutic form "glucose monohydrate" (glucose). It was shown that, as a result of irradiation of glucose with a gamma-quanta beam, it is possible to “label” glucose with the 11C isotope, which is formed as a result of the photonuclear reaction 12C(γ, n)11C at the 12C nucleus, which is part of the glucose molecule C6H12O6 ×H2O. Irradiated sample of glucose dissolved in a given volume of solvent (distilled water) will be ready for use radiopharmaceutical "Glucose, 11C". It has been shown that the “photonuclear method” provides for obtaining the “Glucose, 11C” radiopharmaceutical complex with total activity necessary for performing PET diagnostics. The radiopharmaceutical "Glucose, 11C" by the time of its use has 100% radionuclide purity. “Glucose, 11C” obtained in this way was produced for the first time. The choice of the optimal design of a water-cooled target station, providing a moderate (in terms of heat loads) mode of irradiation of a capsule filled with glucose tablets, is discussed. Using the program “SolidWorks FlowSimulation 2011”, the quantitative characteristics of the flow rates of water flowing around the glucose capsule and the converter are calculated.

Non-linear pressure/temperature-dependence of high pressure thermal inactivation of proteolytic Clostridium botulinum type B in foods.

The effect of high pressure thermal (HPT) processing on the inactivation of spores of proteolytic type B Clostridium botulinum TMW 2.357 in four differently composed low-acid foods (green peas with ham, steamed sole, vegetable soup, braised veal) was studied in an industrially feasible pressure range and temperatures between 100 and 120°C. Inactivation curves exhibited rapid inactivation during compression and decompression followed by strong tailing effects. The highest inactivation (approx. 6-log cycle reduction) was obtained in braised veal at 600 MPa and 110°C after 300 s pressure-holding time. In general, inactivation curves exhibited similar negative exponential shapes, but maximum achievable inactivation levels were lower in foods with higher fat contents. At high treatment temperatures, spore inactivation was more effective at lower pressure levels (300 vs. 600 MPa), which indicates a non-linear pressure/temperature-dependence of the HPT spore inactivation efficiency. A comparison of spore inactivation levels achievable using HPT treatments versus a conventional heat sterilization treatment (121.1°C, 3 min) illustrates the potential of combining high pressures and temperatures to replace conventional retorting with the possibility to reduce the process temperature or shorten the processing time. Finally, experiments using varying spore inoculation levels suggested the presence of a resistant fraction comprising approximately 0.01% of a spore population as reason for the pronounced tailing effects in survivor curves. The loss of the high resistance properties upon cultivation indicates that those differences develop during sporulation and are not linked to permanent modifications at the genetic level.

Strategies to Improve the Energy Efficiency of Pressurized Water Systems

As time goes by, the need to move water is greater and this water will be pressurized. Layout flexibility, security, quality care, control, lower environmental impact and higher efficiency justify pressurized transport rather than natural gravitational water transport. On the negative side, we find the enormous amount of energy pressurized systems require with the associated negative economic and environmental impacts. Therefore, it is crucial to minimize these impacts and that only can be achieved by improving the energy efficiency of these systems. To achieve that final goal, the first step is to perform an assessment to estimate the margin of improvement from the actual performance of the system to the maximum achievable level of efficiency [1]. The second step is to perform an energy audit in order to identify exactly how the energy is used and where it is lost [2], with the third step being identification of the different actions that can be implemented in practice in a system. The final step is to perform the cost benefit analysis of the selected actions to prioritize execution.The focus of attention of this paper is on the third step, actions that can be classified in operational actions (do not require investments) and structural actions (require investments).

ENVIRONMENTAL ASPECTS OF MODERNIZATION OF HIGH POWER WATER-HEATING BOILERS

Boilers of KVGM and PTVM series are characterized by high values of NO x and CO content in the combustion products. Reduction of NO x and CO content can be achieved by two ways: by installing the condensing heat recovery unit at the boiler outlet and by improving the heat and mass transfer processes in boiler furnaces. Application of the condensing heat recovery units causes pollution of resulting condensate by low-concentration acids. The authors conducted a study in order to determine the effectiveness of the previously applied methods of suppressing the emission of nitrogen oxides in the boilers of these types. Equalization of the temperature field and, consequently, enhancement of heat transfer in the furnace by substitution the used burners by the more advanced ones, the design of which facilitates reduction the emission of nitrogen oxides, were applied to all the upgraded facilities. The studies fulfilled demonstrate that a reduction of NO x emissions in water-heating high power boilers is fairly possible by means of modernization of the latter. The authors have developed the project of the PTVM-30 boiler modernization, which was implemented at a large boiler plant in the city of Vinnitsa (Ukraine). The project included a number of technical solutions. Six burners were replaced by the two ones that were located in the hearth; also the hearth screen was dismantled. At the same time, reducing the total surface area of the heating caused by the exclusion of hearth screen was compensated by filling the locations of the six embrasures of staff burners on the side screens with straightened furnace tubes. Installing the burners separate from the screen made it possible to eliminate the transfer of vibration to the furnace tubes, and – via them – to the boilers setting. Automation provided “associated regulations”. Draught machines were equipped with frequency regulators. During commissioning of the boiler the studies were carried out that related to the identification of dependency of the emission level on the shape of the temperature field in the furnace, in particular, – on the intensity of twist of gas-air mixture at the exit from the burner. We studied two extreme cases, i.e. the case of the maximum achievable level of burner twist that is equal to 45° and the case of no twist. As a result of experiments, it was observed that if a decrease of the twist rate takes place the emission of nitrogen oxides is reduced. The methods of further reduction of emissions of nitrogen oxides have been determined, viz. the device recirculation of flue gases by mixing them in a blast air; conducting the process at low excess of air with controlled chemical underburning when complete oxidation of carbon to CO2 accomplishes outside the furnace at the initial section of the convection part; hydration of blowing air into the humidification amount of 1.5–2.0 % of the nominal output of the boiler.

Production flows scheduling subject to fuzzy processing time constraints

Effective sequencing and scheduling of material handling systems (MHSs) have a major impact on the productivity of a manufacturing system. Since the main function of a MHS is to supply the right materials at the right locations at the right time, the design of automated guided vehicles (AGVs) fleet-oriented, distributed and scalability-robust control policies ensuring deadlock-free operations is of crucial importance. In this context, a given design of a flexible manufacturing system (FMS) where vehicles serve workstations located along different modes of cyclic guided paths in a 3D environment composed of rails/lifts/hoists is considered. Furthermore, fuzzy processing time constraints on transportation operations, a production flows scheduling problem subject to an assumed set of constraints imposed by admissible production routes and schedules of AGV fleet in a given MHS are considered. Since this type of problem can be treated as a fuzzy constraint satisfaction problem, the main objective is to provide analytical formulas enabling the avoidance of time-consuming computer-simulation-based calculations of AGV fleet schedules, as well as vehicles deadlock and collisions, while keeping the throughput at the maximum achievable level. Results of computational experiments assessing the scalability of the proposed method are presented as well.

The evaluation of the clinical efficacy of complex treatment and preventive orthodontic and rehabilitation measures in children with spastic cerebral paralysis

Based on the results of the comprehensive examination of 120 patients, the necessity of development and introduction of rehabilitation complex of therapeutic and preventive measures with regard to the type and severity of cerebral paralysis and patient's age in practice was shown. The main purpose of treatment and preventive measures was a complete social adaptation of children with spastic forms of cerebral paralysis, which was dependent on the integrity of speech functions. Rehabilitation measures were implemented by single multidisciplinary team with clear functional responsibilities of each member. The study determined the efficacy of treatment, preventive and rehabilitation measures in children with spastic forms of cerebral paralysis. It has been shown that the complex of treatment-and-preventive and rehabilitation measures for children with spastic forms of cerebral paralysis is positive and should be carried out continuously, from the early age to the maximum achievable level of correction of lost functions.