In this paper, we will introduce a new concept of cyclic phenomena that is called "-diskcyclic operator and construct justify;">examples to show the relationship between other types. In particular, for each " in (0, 1), an justify;">operator not diskcyclic. These examples illustrate main differences definition

A sequence ${T_n}_{n=1}^{infty}$ of bounded linear  operators on a separable infinite dimensional Hilbert space $mathcal{H}$ is called subspace-diskcyclic with respect to the closed subspace $Msubseteq mathcal{H},$ if there exists a vector $xin mathcal{H}$ such that the disk-scaled orbit ${alpha T_n x: nin mathbb{N}, alpha inmathbb{C}, | alpha | leq 1}cap M$ is dense in $M$. The goal of t...

multi-objective optimization is the simultaneous consideration of two or more objective functions that are completely or partially inconflict with each other. the optimality of such optimizations is largely defined through the pareto optimality. multiple objective integer linear programs (moilp) are special cases of multiple criteria decision making problems. numerous algorithms have been desig...

in southeast asia, aedes aegypti (l.) has been incriminated as principal vector of dengue viruses and ae. albopictus as the secondary vector of dengue fever. therefore, the aim of this study was to investigate the effectiveness of three for-mula tions of pyrethrin derived from tanacetum cinerariaefolium against the dengue/dengue haemorrhagic fever vectors aedes aegypti and ae. albopictus in the...

background: laboratory bred sand flies are essential for the study of different biological phenomena including the transmis­sion dynamics of leishmania . the aim of the study was to determine the suitable situation for colonization and main­tenance of iranian strain of phlebotomus papatasi at laboratory conditions from an endemic focus of cutaneous leishmani­asis due to leishmania major . metho...

a.sacharovi, which is one of the main malaria vectors of the palearchic region, is resistant to ddt in greece (1949), lebanon (1954), turkey (1959), syria and the u.s.s.r. (1972).the first record of a. sacharovi resistance to ddt in iran was given in 1959 from the kazeroon area, followed by izeh (1969) and meshkin-shahr (1970).this study (1973) urgently advises speedy measures to eliminate the ...