740 research outputs found
Information technology of developing test kits based on software requirements
The article presents an advanced information technology of developing test kits based on software requirements using regulated cascading decision charts, providing the increase of coverage completeness by the projected test kits of software requirements and the accuracy of the tests themselves. The article presents an advanced information technology of developing test kits based on software requirements using regulated cascading decision charts, providing the increase of coverage completeness by the projected test kits of software requirements and the accuracy of the tests themselves
Large Scale Winter Time Disturbances in Meteor Winds over Central and Eastern Europe
Daily zonal wind data of the four pre-MAP-winters 1978/79 to 1981/82 obtained over Central Europe and Eastern Europe by the radar meteor method were studied. Available temperature and satellite radiance data of the middle and upper stratosphere were used for comparison, as well as wind data from Canada. The existence or nonexistence of coupling between the observed large scale zonal wind disturbances in the upper mesopause region (90 to 100 km) and corresponding events in the stratosphere are discussed
On the dependence of the lower thermospheric wind regime on the solar cycle
The lower thermosphere occupies the intermediate position between the overlying thermospheric layers, for which direct correlation of its parameters with solar variety variations is well established, and the underlying ones, where this correlation is mainly of an indirect character. Therefore, for understanding the mechanism of solar terrestrial correlation it is important to investigate the dependence of different atmospheric parameters in the lower troposphere, and of wind regime parameters in particular, on the solar activity. Several series of observations were used which include the results of meteor radar wind velocity measurements carried out in Obninsk complemented by the data obtained using the same technique at Jodrell Bank from 1953 to 1958 and in Kharkov from 1960 to 1963. The interannual variations of values averaged over these periods for prevailing wind velocities and semidiurnal harmonic amplitudes and also results for some months are presented. These results are discussed
A study of phase separation processes in presence of dislocations in binary systems subjected to irradiation
Dislocation-assisted phase separation processes in binary systems subjected
to irradiation effect are studied analytically and numerically. Irradiation is
described by athermal atomic mixing in the form of ballistic flux with
spatially correlated stochastic contribution. While studying the dynamics of
domain size growth we have shown that the dislocation mechanism of phase
decomposition delays the ordering processes. It is found that spatial
correlations of the ballistic flux noise cause segregation of dislocation cores
in the vicinity of interfaces effectively decreasing the interface width. A
competition between regular and stochastic components of the ballistic flux is
discussed.Comment: 22 pages, 11 figure
Capacity increasing of sensor telecommunication networks
A method of capacity increasing of sensor telecommunication networks has been proposed and investigated. The method proposed is based on a placement control of unmanned aerial vehicles in view of the rapid and unpredictable movement of mobile subscribers. A distinctive feature of developed method is combining mathematical models of connectivity estimation taking into account a quality of service of mobile subscribers and an advanced search algorithm of quasi-optimal placement of unmanned aerial vehicles in a single computational procedure. An application of the method proposed allows increasing the throughput of telecommunication networks to 15β20 percent in comparison with existing methods. Deviations of obtained sub-optimal solutions from optimal ones received by exhaustive method do not exceed 5β7 percent
Free amino acids of the blood and some organs in hypokinesia
The metabolic fund of amino acids of the blood and tissues of rats under hypokinesia was investigated. The content of free amino acids was determined for the liver, kidney, brain, and the skeletal and cardiac muscles after established periods of hypokinesia. It was found that the total content of free amino acids in the experimental animals was, on the average 19 percent lower than in the controls. The results of the quantity of individual compounds indicate that the level of some were reduced while others were increased. It was also found that there was an unequal content of individual amino acids in the different tissues
ΠΡΠΈΠ½ΡΠΈΠΏ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΡΡΡ Π΄Π»Ρ ΡΡΠ°ΡΠΊΡΠΎΡΡΡ Π²ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ Π΄ΠΈΠ½Π°ΠΌΡΡΠ½ΠΎΡ ΡΠΈΡΡΠ΅ΠΌΠΈ Π· Π°Π»ΡΡΠ΅ΡΠ½Π°ΡΠΈΠ²ΠΎΡ
Lagrange problem with the account of functional limitation at any functional limitations atany moment in a given interval is presented. The required conditions for optimal trajectories of thedeterminated dynamic system synthesized as space vehicle trajectories have been obtainedΠ Π°ΡΡΠΌΠΎΡΡΠ΅Π½Π° Π·Π°Π΄Π°ΡΠ° ΠΠ°Π³ΡΠ°Π½ΠΆΠ° Ρ ΡΡΠ΅ΡΠΎΠΌ Π΄Π΅ΠΉΡΡΠ²ΠΈΡ ΡΡΠ½ΠΊΡΠΈΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠ³ΡΠ°Π½ΠΈΡΠ΅Π½ΠΈΡ Π² ΠΊΠ°ΠΆΠ΄ΡΠΉ ΠΌΠΎΠΌΠ΅Π½Ρ Π²ΡΠ΅ΠΌΠ΅Π½ΠΈ Π½Π°Π·Π°Π΄Π°Π½Π½ΠΎΠΌ ΠΈΠ½ΡΠ΅ΡΠ²Π°Π»Π΅. ΠΠΎΠ»ΡΡΠ΅Π½Ρ Π½Π΅ΠΎΠ±Ρ
ΠΎΠ΄ΠΈΠΌΡΠ΅ ΡΡΠ»ΠΎΠ²ΠΈΡ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΡΡΠΈ ΡΡΠ°Π΅ΠΊΡΠΎΡΠΈΠΈ Π΄Π΅ΡΠ΅ΡΠΌΠΈΠ½ΠΈΡΠΎΠ²Π°Π½Π½ΠΎΠΉ Π΄ΠΈΠ½Π°ΠΌΠΈΡΠ΅ΡΠΊΠΎΠΉ ΡΠΈΡΡΠ΅ΠΌΡ, ΠΈΠ½ΡΠ΅ΡΠΏΡΠ΅ΡΠΈΡΡΠ΅ΠΌΠΎΠΉ ΠΊΠ°ΠΊ ΡΡΠ°Π΅ΠΊΡΠΎΡΠΈΡ Π²ΡΠ²Π΅Π΄Π΅Π½ΠΈΡ ΠΊΠΎΡΠΌΠΈΡΠ΅ΡΠΊΠΎΠ³ΠΎ Π»Π΅ΡΠ°ΡΠ΅Π»ΡΠ½ΠΎΠ³ΠΎ Π°ΠΏΠΏΠ°ΡΠ°ΡΠ°Π ΠΎΠ·Π³Π»ΡΠ½ΡΡΠΎ Π·Π°Π΄Π°ΡΡ ΠΠ°Π³ΡΠ°Π½ΠΆΠ° Π· ΡΡΠ°Ρ
ΡΠ²Π°Π½Π½ΡΠΌ Π΄ΡΡ ΡΡΠ½ΠΊΡΡΠΎΠ½Π°Π»ΡΠ½ΠΎΠ³ΠΎ ΠΎΠ±ΠΌΠ΅ΠΆΠ΅Π½Π½Ρ Π² ΠΊΠΎΠΆΠ΅Π½ ΠΌΠΎΠΌΠ΅Π½Ρ ΡΠ°ΡΡ Π½Π° Π·Π°Π΄Π°Π½ΠΎΠΌΡ ΡΠ½ΡΠ΅ΡΠ²Π°Π»Ρ. ΠΡΡΠΈΠΌΠ°Π½ΠΎ Π½Π΅ΠΎΠ±Ρ
ΡΠ΄Π½Ρ ΡΠΌΠΎΠ²ΠΈ ΠΎΠΏΡΠΈΠΌΠ°Π»ΡΠ½ΠΎΡΡΡ ΡΡΠ°ΡΠΊΡΠΎΡΡΡ Π΄Π΅ΡΠ΅ΡΠΌΡΠ½ΠΎΠ²Π°Π½ΠΎΡ Π΄ΠΈΠ½Π°ΠΌΡΡΠ½ΠΎΡ ΡΠΈΡΡΠ΅ΠΌΠΈ, ΡΠΎ ΡΠ½ΡΠ΅ΡΠΏΡΠ΅ΡΡΡΡΡΡΡ ΡΠΊ ΡΡΠ°ΡΠΊΡΠΎΡΡΡ Π²ΠΈΠ²Π΅Π΄Π΅Π½Π½Ρ ΠΊΠΎΡΠΌΡΡΠ½ΠΎΠ³ΠΎ Π»ΡΡΠ°Π»ΡΠ½ΠΎΠ³ΠΎ Π°ΠΏΠ°ΡΠ°Ρ
Wind regime peculiarities in the lower thermosphere in the winter of 1983/84
Temporal variations of prevailing winds at 90 to 100 km obtained from measurements carried out in winter 1983 to 1984 at three sites in the USSR and two sites in East Germany are reported. These variations are compared with those of the thermal stratospheric regime. Measurements were carried out using the drifts D2 method (meteor wind radar) and the D1 method (ionospheric drifts). Temporal variations of zonal and meridional prevailing wind components for all the sites are given. Also presented are zonal wind data obtained using the partial reflection wind radar. Wind velocity values were obtained by averaging data recorded at between 105 and 91 km altitude. Wind velocity data averaged in such a way can be related to about the same height interval to which the data obtained by the meteor radar and ionospheric methods at other sites, i.e., the mean height of the meteor zone (about 95 km). The results presented show that there are significant fluctuations about the seasonal course of both zonal and meridional prevailing winds
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