The article describes the main problems of circuit simulation. The problem of solving ill-conditioned systems of linear algebraic equations (SLAE) of large dimension. The modified algorithm is a linear algebraic solutions. Described a hybrid evolutionary algorithm for solving linear systems based on the proposed modified method. The results of the pilot study and comparison of the algorithm with the algorithms based on the traditional methods for solving linear algebraic equation, which confirm the advantages of the hybrid evolutionary algorithm.
Keywords: Genetic operators, evolutionary algorithm, the system of linear algebraic equations, computer-aided design.
This paper is devoted to development of gas sensors air control. It is shown that copper oxides are the promising materials for high sensitive sensors. The CuOx film material was syntheses by means of citrate sol-gel technique. The sensors fabricated on the basis of CuOx film material were sensitive to ammonia gas in the range of 25-150 ppm. Working temperature was determined as 180 °C. Such sensors can be used for work area air control of industrial enterprises.
Keywords: gas-sensitive element, atmospheric air, sensors, copper oxides
Results of researches of gas sensitive properties of zinc oxide films grown by reactive rf magnetron sputtering was shown. Process parameters, affected on the gas-sensitive ratio, response time, recovery time and the type of electrical conductivity of obtained films were identified. Optimal modes of magnetron sputtering of zinc oxide for implementing gas sensors (RF sputtering Zn target in a gas mixture of oxygen and argon at a concentration of 80% oxygen, a chamber pressure of 0.8 Pa and the magnetron power 100 W) were established. Avarage response time on NO2 gas was 5-15 sec. The obtained values of the gas-sensitivity were in the range 30-67% for NO2 concentrations from 20 to 100 ppm, CO and CO2 from 50 to 100 ppm and 81-97% for higher gas concentrations from 500 to 1000 ppm.
Keywords: Nanotechnology, magnetron sputtering, zinc oxide, thin films, gas sensitivity
In this article the mathematical model dynamic process installations for blast cleaning the surface, and clearly showed the graph of the transition process, given the theoretical integer parameters yield in the specific process conditions.
Keywords: Fluid Technology, a dynamic characteristic of the drive, nozzle - gate, jetting processing surface
Article focuses on the use of statistical models to predict tolerability surgery using intracavitary hyperthermic chemotherapy (IHCT) and the definition of indications and contraindications to perform operations and tolerability for patients with cancer based on the hemostatic patient. This technique allows a high enough accuracy to prediction portability planned surgery, duration of disease-free period, the period and quality of life in the immediate and late postoperative period.Improve treatment of patients with malignant tumors of the abdomen and pelvis, is one of the priorities of modern health care. Relevance of various parameters of immunity, clinical and biological parameters of homeostasis and prognosis of malignant disease in humans will significantly reduce the proportion of late diagnoses of relapses. Recently there has been increased research to find a method of complex cytoreductive surgery and the use of cytotoxic drugs, and physical therapies, one of which is a local intraoperative hyperthermic chemotherapy. With the help of statistical methods has been studied the degree of influence on the parameters IHCT immunity and an estimate of the nature of the immunological changes in different types of surgery. Methods of binary logistic regression analysis was calculated diskriminatnogo forecast portability operation - patient survival probability. Based on the method of multiple regression were obtained algorithms calculate the duration of life of patients after surgery, and the duration of DFS. Studies based on the factor analysis showed that the main factors affecting the prognosis of disease-free period and the period of life are the morphological structure of the tumor volume cytoreduction, the sum of your immune system and cancer markers. Peritoneal cancer index, sex and age of the patient does not have a significant effect on these parameters. Thus, the introduction into clinical practice of the proposed computer systems and statistical forecasting models allow physicians to objectively evaluate the performance of homeostasis, the portability of the planned surgery, more accurately predict the course of the cancer disease and the likelihood of recurrence of the disease and the duration and quality of life.
Keywords: statistics, modeling, forecasting, surgery, colorectal cancer, disease-free life expectancy, tolerance of surgery, immunological parameters, factor analysis, regression equation
To create in Rostov-on-Don, ecologically effective, technologically advanced and durable green plantings to solve the problem: 1. Create a variety of trees for landscaping cities and towns; 2. Determine the principles of green plantings, ensuring their maximum environmental efficiency. In the steppe zone of Russia should use the structure of the park, with a high proportion of dense plantings (400 trees per hectare) of long-lived trees of the first magnitude.
Keywords: green building, greening cities, assortment of trees, ecologically effective green plantings, the steppe zone
Work is connected with the synthesis of information behavior of groups of autonomous intelligent agents of biomedical research, and machine learning methods to ensure the reliability of the forecast increase in their behavior using multi-agent systems based on the use of bionic principles, methods and models of swarm intelligence. Developed multi-agent system simulates the behavior of groups of autonomous intelligent agents developed methods to meet the proposed criteria of reliability, differing form the structure of the system and developed a set of specialized agents that provides the capability to model a group of biomedical robotics using autonomous intelligent agents. Classifier of stabilographic signals on the basis of Parzen method was developed. These data indicate that the auxiliary symptoms resulting from multidimensional scaling much more informative initial attributes.
Keywords: Intelligent agent, multidiagnostics, Parzen classifier
The features of circuit engineering and results of chip computer simulation which consists of 4-channel operational amplifier (op amp) and 2-channel electrometric voltage follower, designed for pre-processing of sensors signals in high-energy physics are considered.
The characteristic properties of designed op amp are the absence of current source in the input differential stage and the use of parallel high-frequency channel for increasing of the bandwidth and slew rate.
The results of experimental research that have confirmed the low sensitivity of the parameters of designed integrated circuits created on the field programmable gate array "FGPA-1.3" without the horizontal p-n-p transistors to the influence of gamma-irradiation and electrons with energy of 4 MeV are given.
Keywords: operational amplifier, field programmable gate array, voltage follower, sensor, sensing element, radiation resistance.
The purpose of investigation is to examine the effect of adaptation to difficult-house physical stress on the regulation of the vertical posture of man. For the analysis of the ability to maintain a vertical position used stabilographic hardware-software complex "Stabilan-1-02" (JSK Rhythm ", Russia). The ability to maintain a vertical position was evaluated in two static positions: 1) the main stand (OS) in the presence and absence of visual information, and 2) dip (PP) in the presence of visual information. Revealed that an increase of physical performance ability to maintain balance in static positions, especially in the complicated conditions (deprivation of visual information and static muscle tension) increases.
Keywords: Sports stabilometry, adaptation, vertical pose
The influence of fine-dispersed mineral adds on the properties of cement stone and concrete has been investigated. The possibility of production of necessary strength concrete with small sand without increasing of standard expenditure of cement has been designed.
Keywords: concrete, strength, small sand, add, mineral powder, cement, reduction, expenditure
Submitted manufacturing operations performed at the landfill site TOP, their main types of negative impacts on the environment. The conditions of formation and emission of biogas generated in the interior of the landfill body and having a pronounced toxic effects. The dependence of the specific biogas yield for the period of his active stable generation.
Keywords: Solid waste consumption, landfill disposal TOP, biogas, wet waste, environmental safety
In article are considered questions of the study of the composition of the drip of ash from galvanic bath with the application of chromium coatings, the results of research concentrations of chromium above the surface of the bath and in the working zone depending on the height above the mirror electrolyte
Keywords: working zone, galvanic bath, drip ash, chrome, local capturing
This article presents an agent-based computational model of civil violence. In the model a central authority seeks to suppress communal violence between two warring ethnic groups. To describe model UML diagrams are presented. Article also shows a number of experiments with model which shows such benefits of model as guiding data collection, revealing dynamical analogies, discovering new questions and decision support in crisis situations.
Keywords: Legitimacy, agent based modeling, simulation, risk aversion, jail, neighborhood patches, radius vision, expressed political tension, latent political tension
Consideration of the formation method of choice underlying architecture of reconfigurable computing system minimal cost, providing the requirements for the probability of the task. The main mathematical tool used in the theory of decision making under uncertainty, as well as methods for game-theoretic optimization.
Keywords: reconfigurable computing system, Markov processes, game-theoretic optimization, basic architecture, the uncertainties
The main feature of linearly - extended construction is movement of a scope of works in space that results in the need to carry out relocation of linear crews with spending aditional time and resources. This problem can be considered as a problem of defining maximality of the constructed full work stream. And the physical essence of located objects, as a rule, has impact on restrictions type and optimality criteria selected for an assessment of placement.
Keywords: organization, technology, construction, laying, resources, graph theory.