The existence of T-periodic solutions of the nonlinear system with multiple delaysis studied. By using the topological degree method, sufficient conditions are
Two mathematical models are developed in this paper to study the effectiveness of system administration efforts on the improvement of system availability, based
The change of electrical performances of silicon-germanium (SiGe) heterojunction bipolar transistor (HBT) andSi bipolar junction transistor (BJT) was studied as
The emission and excitation spectra of Gd2SiO5: Eu3+ were investigated using the VUVbeam line of the Beijing Synchrotron Radiation Facility (BSRF). The experime
α-Fe nanowire array has been electrodeposited into anodic aluminum oxide template. The magnetic moment distributions, in the interior and near the extremities
The process and related technology of agile supply chain reengineering is discussed in this paper. The process of supply chain reengineering is divided into two
A theoretical model for ionospheric electric fields at mid- and Iow-latitudes is developed.In the geomagnetic dipolar coordinate system, we deduce a partial dif