Recently, the researches on pinning control of complex dynamical networks have mainly focused on such networks with very specific coupling schemes (e.g., symmetric coupling, uniform coupling and linear coupling). However, most real networks often consist of local units, which interact with each...

Soil surface mulching is known to be effective in reducing surface runoff, increasing the infiltration of water into the soil and slowing soil erosion. A two-year field experiment evaluated three possible soil surface management practices: (1) conventional treatment, without mulching—the...

A monopolist firm sells a single product to a market where the customers may be enticed to accept a delay in when their orders are shipped. The enticement is a discounted price for the product. The market consists of several segments with different degrees of aversion to delays. The firm offers...

The influence of long-range interactions on the stability of stationary solutions of triangular lattices described by the continuum-discrete nonlinear Schrödinger equation is analyzed. By virtue of the linear stability analysis and a variational approach we demonstrate that both soliton array...

The developed countries committed to greenhouse gases reductions under the aegis of the Kyoto Protocol of the United Nations Framework Convention on Climate Change will, in order to reduce the cost of meeting their commitments, depend on cheaper reductions elsewhere. The reductions will be...

In this paper we investigate a class of cardinality-constrained portfolio selection problems. We construct convex relaxations for this class of optimization problems via a new Lagrangian decomposition scheme. We show that the dual problem can be reduced to a second-order cone program problem...

We investigate in this paper the duality gap between quadratic knapsack problem and its Lagrangian dual or semidefinite programming relaxation. We characterize the duality gap by a distance measure from set {0, 1}<Superscript> n </Superscript> to certain polyhedral set and demonstrate that the duality gap can be reduced...</superscript>