This paper addresses the determination and evaluation of optimal Internet marketing strategies when a firm is advertising on multiple websites. An optimization model is constructed for the determination of the optimal amount of click-throughs subject to a budget constraint. The underlying...

Consider a firm promotes its products through several Internet media with a fixed Internet marketing budget and models the budget allocation decisions as a competitive game, in which each firm formulates its own optimization model that is influenced by the competitors' moves as well. One...

ZnO thin films were prepared on silica glass substrates by a sol–gel spin coating technique. The thickness of the films was about 200 nm. At 370 nm in the ultraviolet region, there is a sharp absorption edge that corresponds to the ZnO intrinsic band gap of 3.30 eV. The structural properties...

This paper is concerned with the robust stability analysis problem for uncertain stochastic neural networks with time-varying delay. The parameter uncertainties are assumed to be norm bounded. By defining a new Lyapunov–Krasovskii functional, the restrictions such as the time-varying delay was...

The methodology for assessing the vegetation damaged by the Wenchuan earthquake by using the technologies of remote sensing and GIS was discussed in Dujiangyan city of Sichuan Province, China. The model of extracting vegetation from CBERS images was formulated using the differentiation knowledge...

We use a generalized birth--death stochastic process to model the high-frequency dynamics of the limit order book, and illustrate it using parameters estimated from Level II data for a stock on the London Stock Exchange. A new feature of this model is that limit orders are allowed to arrive in...