Publications by authors named "V L Volovoi"

One of the most critical challenges to full integration of unmanned aircraft systems (UAS) into the National Airspace System (NAS) is the requirement to comply with CFR 14 Part 91.113 to "see and avoid" other aircraft. Various attempts have been made to develop systems to "sense and avoid" other aircraft so UAS can comply with the intent of the regulation.

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We investigate the failure mechanisms of load-sharing complex systems. The system is composed of multiple nodes or components whose failures are determined based on the interaction of their respective strengths and loads (or capacity and demand, respectively) as well as the ability of a component to share its load with its neighbors when needed. We focus on two distinct mechanisms to model the interaction between components' strengths and loads.

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The paper deals with the objectivisation of quantitative criteria for defining the functional classes of the oxygen transport system. For this, the spiroergometric findings of patients with valvular and congenital heart diseases before and after their surgical correction were processed by using currently available mathematical methods of cluster analysis. Five classes of the functional status were identified.

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The informative value of determination of the restoration rate of spiroergometric parameters was examined in cardiosurgical patients who had undergone exercise testing. All the patients were divided into 3 homogeneous groups: (1) those without disorders; (2) those with moderate restoration; and (3) pronounced restoration. There was a moderate relationship between the restoration rate and the function of the oxygen transport system (OTS) and a high relationship between the rate and exercise tolerance in decompensated metabolic acidosis and left ventricular function.

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Spiroergometric findings obtained before and in different periods (1 month to 8 years) after surgical correction were analyzed in 373 patients with congenital and acquired heart diseases. This allowed the patients to be divided into two groups in terms of their exercise tolerance in decompensated metabolic acidosis. The division should be used to assess the function of the oxygen transport system in cardiac surgical patients who have failed to achieve the "plateau" of oxygen uptake.

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