Parametric and structural optimization of the queuing network throughput

Consideration was given to the parametric and structural optimization of the throughput of various queuing systems. Solutions of these problems rely on a combination of the decomposition methods for optimization of the nonsmooth functions and search of the admissible solutions of the transportation problem, as well as on the majorant estimates of the efficiency of the integrated queuing systems.     

The band formula for A.N. Krylov’s problem

A new formula for solving the Krylov problem on the basis of band matrices is proposed. Properties of the obtained formula are studied for problems of analysis and synthesis of linear controlled systems.     

Discrete geometry methods in processing complicated graphical information

The development of efficient techniques for converting information obtained from complicated graphical documents into a digital form is considered. It is shown that the use of discrete geometry methods make it possible to improve the efficiency of many technological stages. The work was supported by the Russian Foundation for Basic Research, project no. 00-15-96018 and by the Integration Foundation, project no. K-03392.     

Efficient designs of reversible sequential circuits

The Journal of Supercomputing - Recently, the synthesis of reversible sequential circuits has attracted researchers’ attention for implementing low-power logic designs. So far, the direct and...     

Effect of polyvitamin preparations on blood coagulation in experimental hypercoagulation]

The influence of polyvitamin compounds on the course and outcome of experimental hypercoagulemia was studied. "Hendevitum", "Aerovitum" and "Undevitum" proved to be most effective in reducing negative results of thromboplastemia. "Glutamevitum" was insignificantly effective, while "Quadevitum" and "Complevitum" did not reduce animals' death rate after intravascular injection of thromboplastin in LD50. Positive effects of polyvitamin compounds might be associated with their capacity for stimulating anticoagulation potential, especially, in accelerated continuous intravascular blood coagulation.     

Effect of a vitamin complex with mineral substances on blood coagulation in rats when administered by different methods and in experimental hypercoagulation

Experiments conducted on white rats have evidenced that a single injection of a complex of vitamins with mineral substances ("Complivit") in doses similar to the therapeutic induces a short-term hupocoagulemia, which is reproduced during long-term administration. The animals tolerance to thromboplastin is significantly increased in the period of hypocoagulemia. It is suggested that the complex can produce a favourable effect in cases with hypercoagulemia.     

Processing of Non-Ferrous Metallurgy Waste Slag for its Complex Recovery as a Secondary Mineral Raw Material

Refractories and Industrial Ceramics - The article presents an overview of the methods of processing slag from Waelz process, and various approaches employed by scientists globally, aimed at...     

Effect of alloying with rare earth metals on the recrystallization temperature and properties of aluminum and an alloy of the system Al-Cu-Mn

Translated from Metallovedenie i Termicheskaya Obrabotka Metallov, No. 4, pp. 40–43, April, 1990.