Guest Editorial: Nonlinear Optimization of Communication Systems

Linear programming and other classical optimization techniques have found important applications in communication systems for many decades. Recently, there has been a surge in research activities that utilize the latest developments in nonlinear optimization to tackle a much wider scope of work in the analysis and design of communication systems. These activities involve every “layer” of the protocol stack and the principles of layered network architecture itself, and have made intellectual and practical impacts significantly beyond the established frameworks of optimization of communication systems in the early 1990s. These recent results are driven by new demands in the areas of communications and networking, as well as new tools emerging from optimization theory. Such tools include the powerful theories and highly efficient computational algorithms for nonlinear convex optimization, together with global solution methods and relaxation techniques for nonconvex optimization

Promoting positive development of migrant children in Hangzhou : pioneering experience and preliminary evaluation findings

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Generating entanglement of photon-number states with coherent light via cross-Kerr nonlinearity

We propose a scheme for generating entangled states of light fields. This scheme only requires the cross-Kerr nonlinear interaction between coherent light-beams, followed by a homodyne detection. Therefore, this scheme is within the reach of current technology. We study in detail the generation of the entangled states between two modes, and that among three modes. In addition to the Bell states between two modes and the W states among three modes, we find plentiful new kinds of entangled states. Finally, the scheme can be extend to generate the entangled states among more than three modes.Comment: 2 figure

Aleurochiton orientalis Danzig, 1966 (Hemiptera: Aleyrodidae), newly recorded from China, with a key to puparia of all described Aleurochiton species

The genus Aleurochiton Tullgren (1907) is here newly recorded from China as A. orientalis Danzig (1966). It was collected from Acer mono Maxim (Sapindales: Aceraceae) in Shaanxi Province, but was originally described from the Russian Far East (Southern Primor’ye) by Danzig (1966). The puparial morphology of A. orientalis is here illustrated by line art, photomicrographs and scanning electron microscope (SEM) photographs. An identification key to the all five described Aleurochiton species is provided

Monophasic Action Potential Duration During Programmed Electrical Stimulation

Peer Reviewedhttp://deepblue.lib.umich.edu/bitstream/2027.42/73599/1/j.1540-8159.1991.tb04156.x.pd