Murzagulov G.S., Gaifullina L.R., Saltykova E.S.
GROUP EFFECT ROLE IN INSECT RESISTANCE FORMATION ^{[№ 12 ' 2011]}
The article deals with the phenomenon of group immunity, which may lead to increased personal protection of individuals in the local population. Propensity of many insect species form large clusters, as well as their high degree of stability suggests that these insects have expressed the group immunity.

Gayfullin V.M., Denisova O.O.
ON THE PROBLEM OF VISIBILITY ON UNREGULATED PEDESTRIAN CROSSINGS ^{[№ 10 ' 2011]}
The authors describe a solution to the problem of visibility of a pedestrian on unregulated pedestrian crossings in a given movement by raising the visibility of road signs "pedestrian crossing" through their location above the carriageway on the wire-braced, as well as to increase the visibility of pedestrian through the use of elements with a reflective effect.