In recent years, there has been a growing interest in companion matrices. Sparse matrices are well known: every sparse matrix is equivalent to Hessenberg of particular simple type. Recently, Deaett et al. [Electron. J. Linear Algebra, 35:223--247, 2019] started the systematic study nonsparse They proved that nonderogatory, although not necessarily matrix. this paper, which unit described. matri...

canine ehrlichiosis is a zoonotic rickettsial disease transmitted by ticks. in the present study, 198 companion dogs of different ages were examined for serum antibody detection against ehrlichia canis by means of immunochromatography assay. the dogs were selected among referred cases to veterinary hospital of shahid chamran university of ahvaz, southwestern iran from november 2008 to march 201...

Trash blankets contain substantial amounts of nitrogen (N) and other nutrients. The availability of N in trash is complicated because most of the N cycles through the soil organic matter. To gain insights into the long-term fate of N contained in trash, N dynamics in the SASEX long-term trash management experiment (BT1) were simulated with the APSIM-Sugarcane cropping systems model. Initially, ...

Weed management is a major issue in organic farming systems. Although interseeding cover crops is one alternative to herbicides, cover crops often suppress not only weeds but also main crops. Therefore, using cover crops for weed control without adverse effects on main crop growth is important. To verify the effect of cover crops on competition between main crops, cover crops and weeds in snowy...

This paper discusses the conditions for the integration of a software companion into a distance training system. The study context is that of Croisières, a device to learn French. The main questions raised when integrating a software companion into such a device can be answered by defining the various roles that the companion plays for the learner, by defining a written dialogue that can be est...