This paper studied the 2–point improved block backward differentiation formula for solving stiff initial value problems proposed by Musa et al (2013) and further established the necessary conditions for the convergence of the method. It is shown that the method is both zero stable and consistent. The order of the method is also derived.

Yasemin Altuner Torun1, Edip Torun2, Ayşe Betül Ergül3, Musa Karakükçü4, Türkan Patıroğlu4 1Department of Pediatrics, Division of Pediatric Hematology, Kayseri Education and Research Hospital, Kayseri, Turkey 2Department of Gastroenterology, Faculty of Medicine, Erciyes University, Kayseri, Turkey 3Department of Pediatrics, Division of Pediatrics, Kayseri Education and Research Hospital, Kayser...

The taxonomic knowledge about immature stages of the insect order Odonata (dragonflies and damselflies) is rather limited in tropical America. Here, the larvae of Epigomphus jannyae Belle, 1993 and E. tumefactus Calvert, 1903 are described, figured, and compared with other described congeners. E. jannyae larva is characterized by 3rd antennomere 1.6 times longer than its widest part; ligula ver...

Debris-flow erosion patterns were investigated for two adjacent catchments, Molinara and Val del Lago creeks (Eastern Alps, Trento Province, Italy), where debris flows triggered by an intense storm in the summer of 2010. Both basins have been inactive over last centuries. The activated channel bank under stable bed conditions before event. erosive process was analysed combining a field campaign...