739 research outputs found
Sorting Methods in Self-Organization of Models and Clusterizations (Review of New Basic Ideas) - Iterative (Multirow) Polynomial GMDH Algorithms
Review of the Group Method of Data Handling approac
Long-term prediction test procedure for most ICs, based on linear response theory
Experimentally, thermal annealing is known to be a factor which enables a number of different integrated circuits (IC's) to recover their operating characteristics after suffering radiation damage in the space radiation environment; thus, decreasing and limiting long term cumulative total-dose effects. This annealing is also known to be accelerated at elevated temperatures both during and after irradiation. Linear response theory (LRT) was applied, and a linear response function (LRF) to predict the radiation/annealing response of sensitive parameters of IC's for long term (several months or years) exposure to the space radiation environment were constructed. Compressing the annealing process from several years in orbit to just a few hours or days in the laboratory is achieved by subjecting the IC to elevated temperatures or by increasing the typical spaceflight dose rate by several orders of magnitude for simultaneous radiation/annealing only. The accomplishments are as follows: (1) the test procedure to make predictions of the radiation response was developed; (2) the calculation of the shift in the threshold potential due to the charge distribution in the oxide was written; (3) electron tunneling processes from the bulk Si to the oxide region in an MOS IC were estimated; (4) in order to connect the experimental annealing data to the theoretical model, constants of the model of the basic annealing process were established; (5) experimental data obtained at elevated temperatures were analyzed; (6) time compression and reliability of predictions for the long term region were shown; (7) a method to compress test time and to make predictions of response for the nonlinear region was proposed; and (8) nonlinearity of the LRF with respect to log(t) was calculated theoretically from a model
Revisiting the Provision of Nanoscale Precision of Cutting on the Basis of Dynamic Characteristics Modeling of Processing Equipment
The article deals with the issues related to the development of the processing equipment providing na-noscale precision of cutting by means of turning and milling. Building of a machine dynamic model is car-ried out to solve of this task. This allows taking into account the dynamic characteristics of the existing or
designed equipment and the errors of dynamic setting of the machine and this also allows providing pro-cessing precision in nanometer range.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3634
Environmental problems
The planet Earth is only a tiny part of the universe, but it's the only place where human beings can live. Today, our planet is in serious danger. The poisoning of the world's land, air and water is the fastestspreading disease of civilization. If present trends continue for the next several decades, our planet will become uninhabitable
МІСЦЕ І РОЛЬ КУЛЬТУРИ МОВИ У ФАХОВІЙ ПІДГОТОВЦІ СТУДЕНТІВ-НЕФІЛОЛОГІВ (THE PLACE AND THE ROLE OF THE SPEECH CULTURE IN THE PROFESSIONAL TRAINING OF THE STUDENTS WHO ARE NOT PHILOLOGISTS)
У статті проаналізовано місце і роль культури мови у фаховій підготовці студентів-нефілологів, запропоновано методичні рекомендації стосовно підняття рівня культури мови; доведено взаємозв’язок національної мови і культури.
(The author analyzes the role and place of speech culture in the training of non-philological faculties’ students.
The methodical recommendations for improving the speech culture are proposed. The author shows the relationship
of the national language and culture.
Using intelligent optimization methods to improve the group method of data handling in time series prediction
In this paper we show how the performance of the basic algorithm of the Group Method of Data Handling (GMDH) can be improved using Genetic Algorithms (GA) and Particle Swarm Optimization (PSO). The new improved GMDH is then used to predict currency exchange rates: the US Dollar to the Euros. The performance of the hybrid GMDHs are compared with that of the conventional GMDH. Two performance measures, the root mean squared error and the mean absolute percentage errors show that the hybrid GMDH algorithm gives more accurate predictions than the conventional GMDH algorithm
Revisiting the Provision of Nanoscale Precision of Cutting on the Basis of Dynamic Characteristics Modeling of Processing Equipment
The article deals with the issues related to the development of the processing equipment providing na-noscale precision of cutting by means of turning and milling. Building of a machine dynamic model is car-ried out to solve of this task. This allows taking into account the dynamic characteristics of the existing or
designed equipment and the errors of dynamic setting of the machine and this also allows providing pro-cessing precision in nanometer range.
When you are citing the document, use the following link http://essuir.sumdu.edu.ua/handle/123456789/3634
Інноваційна екосистема як драйвер економічного розвитку країни
The article summarizes scientific and methodical approaches to the interpretation of the concept "innovative ecosystem", identifies the components of the national innovation ecosystem and outlines the benefits of the ecosystem approach in innovation policy.У статті узагальнено науково-методичні підходи щодо тлумачення поняття «інноваційна екосистема», виокремлено складові національної та інноваційної екосистеми та визначено переваги екосистемного підходу в інноваційній політиці
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