Wheels In Productivity Revisited, the World Bank turns its ongoing productivity research program to the issue of the apparent failure of productivity in developing countries to converge to the higher productivity in advanced economies.The World Bank asserts, but provides little evidence, that converge is not taking place The analysis is grounded in
In this paper, we Cookies explore local dynamic characteristics, bifurcations and control in the discrete activator-inhibitor system.More specifically, it is proved that discrete-time activator-inhibitor system has an interior equilibrium solution.Then, by using linear stability theory, local dynamics with different topological classifications for
The application of neodymium based cis-1,4-polybutadiene rubber (Nd-BR) BR 9101 N in the formula of support compound of run-flat tire was studied, and compared with those of foreign same type product Nd-BR CB 24.The results showed that Nd-BR BR 9101 N could meet the requirements for incoming inspection of Nd-BR raw material, and the basic compoundi
Results of creep tests of two Fe-27 Wheels at.% Al-based alloys with additions of 2.7 and 4.8 at.% of niobium conducted in the temperature range from 650 °C to 900 °C in the authors’ laboratory are presented.The purpose of the study is to supplement previous work on Fe-Al-Nb alloys to obtain a more complete overview of creep propert
The globus pallidus occupies a critical position in the indirect pathway of the basal ganglia motor control system.Hyperpolarization-activated cyclic-nucleotide gated (HCN) channels play an important role in the modulation of neuronal excitability.In vivo extracellular single unit recording, behavioral test and immunohistochemistry were performed t