[The baroreflex model of regulation of systemic circulation vessels in humans influenced by postural effects].

The model simulates a remote nervous control mechanism that integrates also the baroreflex role in systematic circulation hemodynamics influenced by postural effects. Parameters of the circulation consummatory organs have been modeled by addition or subtraction of metrics and baroreflex "increments" in accordance with the accepted controller structure. The basal vascular tone determined by the myogenic mechanisms forms a positive feedback with the initial tone value.

[Simulation model of local mechanisms controlling the human systemic circulation vessels during postural tests].

The article describes a nonpulsatile model of human systemic circulation simulating the effects of posture changes on main indices of blood flow in different vessels and body segments. The model comprises the hemodynamics structural chart, hydrodynamic and hydrostatic circulation models, and a myogenic regulation model The systematic circulation model enables investigation and representation of myogenic regulation of peripheral circulation along different vessels and body segments experimental investigations of which is complicated by inevitable nonlinear distortions. In future an algorithm will be developed to compute values of the main hemodynamic indices for the tilt and standing tests.

[Mathematical modeling of passive mechanisms of the human vascular regulation in orthostatic position].

Formalized description of the vascular component of the human circulation system taking in the effects of gravity on the human organism during the standing test is presented. The structure proposed in the model by R.D.

[Simulation models of thermal-humidity parameters of the space suit].

The paper describes a mathematical model of and methods of calculating thermal-humidity fields in a spacewalking suit. The authors made an integral calculation of thermal and mass transfer in the spacesuit. A system of equations is solved analytically and numerically with the use of a combined method.