Estimation of the error in determining the height of the radar interferometer, taking into account the influence of destabilizing factors

2021 ◽  
Author(s):  
Oleg Goryachkin ◽  
Ivan Maslov
Keyword(s):  
Destabilizing Factors

scholarly journals Formation of integrated structural units using the systematic and integrated method when implementing high-rise construction projects

2018 ◽  
Vol 33 ◽  
pp. 03075 ◽  
Author(s):  
Ivan Abramov
Keyword(s):  
Construction Projects ◽  
Structural Unit ◽  
System Analysis ◽  
Research Priorities ◽  
Structural Units ◽  
Factors Affecting ◽  
Reliability Criterion ◽  
Integrated Method ◽  
Destabilizing Factors ◽  
The Impact

Development of design documentation for a future construction project gives rise to a number of issues with the main one being selection of manpower for structural units of the project’s overall implementation system. Well planned and competently staffed integrated structural construction units will help achieve a high level of reliability and labor productivity and avoid negative (extraordinary) situations during the construction period eventually ensuring improved project performance. Research priorities include the development of theoretical recommendations for enhancing reliability of a structural unit staffed as an integrated construction crew. The author focuses on identification of destabilizing factors affecting formation of an integrated construction crew; assessment of these destabilizing factors; based on the developed mathematical model, highlighting the impact of these factors on the integration criterion with subsequent identification of an efficiency and reliability criterion for the structural unit in general. The purpose of this article is to develop theoretical recommendations and scientific and methodological provisions of an organizational and technological nature in order to identify a reliability criterion for a structural unit based on manpower integration and productivity criteria. With this purpose in mind, complex scientific tasks have been defined requiring special research, development of corresponding provisions and recommendations based on the system analysis findings presented herein.

scholarly journals ОПТИМІЗАЦІЯ ВИМІРЮВАЛЬНИХ ЗАСОБІВ НАПРУЖЕНО-ДЕФОРМОВАНОГО СТАНУ ЗА ДОПОМОГОЮ ТЕНЗОДАТЧИКІВ

2019 ◽  
pp. 50-56
Author(s):  
Людмила Володимирівна Кузьмич ◽  
Дмитро Петрович Орнатський ◽  
Володимир Павлович Квасніков
Keyword(s):  
Strain Gauge ◽  
Strain State ◽  
Approximation Error ◽  
Strain Gauges ◽  
Mean Square ◽  
Stress Strain ◽  
Stress Strain State ◽  
Destabilizing Factors ◽  
Mechanical Factors ◽  
The Mean

In the article, the principles of construction, design and mathematical modeling of deformation and stresses of complex technical constructions are developed with the help of strain gauges and strain gauges taking into account destabilizing factors, which allows to significantly reduce the level of errors in relation to existing measurement methods and known analogs.The method of digital compensation provides a more significant reduction in the errors of measuring transducers compared with the method of analog compensation. Features and technical indicators of this method are considered on an example of measuring pressure transducer with foil strain gauges.This method is universal, allows us to adjust not only the errors of the measurement channel nonlinearity and additional errors but also the errors associated with the effect of interferences of the general type due to ground resistance, which induces the connection between the measuring channels of the main and destabilizing factor.The disadvantages of this method include a significant amount of computations, which sharply increases with increasing order of approximating polynomials.The purpose is to develop a method and means of measuring stress-strain state using strain gauge, free from the above - mentioned shortcomings.The main destabilizing factors that limit the measurement accuracy using strain gauge are:- random processes (noises, obstacles, etc.);- changes in parameters of measuring transducers due to aging and physical degradation;- effects of external climatic and mechanical factors (temperature, humidity, etc.).The influence of the main destabilizing factors limiting the accuracy of the measurement of the stress-strain state of complex technical constructions with the help of strain gauges was analyzed, among which the influences of external climatic and mechanical factors are one of the most important ones. Regarding the systematic components, the most important in statistical measurements are the errors of nonlinearity and the temperature component of the error.For the study, two main alloys were taken, which today has the widest use as a material for strain gauges - it is constantan and karma. For these materials, the influence of the range of temperature changes, the spread of the values of temperature error on the mean-square value of the error of approximation by power polynomials was investigated.Using the NUMERY package, the dependence of the approximation error on the order of the approximating polyphony was determined. It is established that the mean square error value in the wide temperature range for both constantan and karma has a weak correlation with the order of a polynomial.

scholarly journals Its present state overmoistened landscape systems of Lviv Region

2014 ◽  
pp. 347-354
Author(s):  
N. Blazhko
Keyword(s):  
Key Words ◽  
Present State ◽  
Environmental Conditions ◽  
Ecological Status ◽  
Ecological Condition ◽  
Wetland Landscape ◽  
Current State ◽  
Destabilizing Factors ◽  
Good Ecological Status ◽  
Stabilizing Factors

Reviewed the current state of wetland landscape systems (PLC) Lviv region. Highlighted areas PLC of good ecological status, with a satisfactory ecological condition and unsatisfactory environmental conditions. Key words: overmoistened landscape systems (OLS)peat, peat, drainage improvement, environmental stabilizing factors, environmental destabilizing factors.

Statistics of economic security of the Moscow region: debt of organizations on budget payments

2020 ◽  
pp. 132-138
Author(s):  
Д.В. Дианов ◽  
А.И. Борщенко
Keyword(s):  
Economic System ◽  
Economic Security ◽  
Moscow Region ◽  
Mathematical Statistics ◽  
Standard Of Living ◽  
Regional Economic ◽  
Degree Of Protection ◽  
Regional Budget ◽  
Destabilizing Factors

Региональная экономическая безопасность по-прежнему определяется не желаемыми параметрами, характеризующими степень защищённости развитой экономической системы от возможных угроз и факторов дестабилизации, а тем, насколько финансовая система, все её звенья, способны обеспечить функционирование хозяйства вообще, и поддержать уровень жизни населения в рамках, не ниже определенных числовых значений. Таким образом, речь идёт о государственных финансах, которые напрямую зависят от финансов организаций. Иными словами, речь идёт о качестве бюджетных отношений. В научной статье рассматривается и даётся количественная оценка влияния факторов на важнейший показатель региональной экономической безопасности, связанный с несвоевременным выполнением налогоплательщиками обязательств перед бюджетной системой. Для этого в работе применены наукоемкие методы математической статистики. Regional economic security is still not determined the desired parameters, characterizing the degree of protection for the developed economic system from possible threats and destabilizing factors, and how the financial system, all its links are able to ensure the functioning of the economy in General, and to maintain the standard of living of the population within, not below certain numerical values. Thus, we are talking about public finances, which are directly dependent on the finances of organizations. In other words, we are talking about the quality of budget relations. The article evaluates and models the influence of factors on the most important regional indicator of late payments and payments of institutional units to the regional budget. For this purpose, the work uses science-intensive methods of mathematical statistics.

scholarly journals Senescence-induced inflammation: an important player and key therapeutic target in atherosclerosis

2020 ◽  
Vol 41 (31) ◽  
pp. 2983-2996 ◽  
Author(s):  
Stevan D Stojanović ◽  
Jan Fiedler ◽  
Johann Bauersachs ◽  
Thomas Thum ◽  
Daniel G Sedding
Keyword(s):  
Chronic Inflammation ◽  
Therapeutic Strategy ◽  
Treatment Options ◽  
Cell Types ◽  
Small Subset ◽  
Plaque Instability ◽  
Central Node ◽  
Destabilizing Factors ◽  
Important Player ◽  
Pro Inflammatory Cytokines

Abstract Inflammation is a hallmark and potent driver of pathological vascular remodelling in atherosclerosis. However, current anti-inflammatory therapeutic strategies have shown mixed results. As an alternative perspective on the conundrum of chronic inflammation emerging evidence points towards a small subset of senescent cells as a critical player and central node driving atherosclerosis. Senescent cells belonging to various cell types are a dominant and chronic source of a large array of pro-inflammatory cytokines and various additional plaque destabilizing factors, being involved with various aspects of atherosclerosis pathogenesis. Antagonizing these key agitators of local chronic inflammation and plaque instability may provide a causative and multi-purpose therapeutic strategy to treat atherosclerosis. Anti-senescence treatment options with translational potential are currently in development. However, several questions and challenges remain to be addressed before these novel treatment approaches may enter the clinical setting.

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