Time Reversal and Tomographic Representation for Signal Processing in Living Systems

The tomographic representation for signal processing opens new opportunities for studies of living system signals. Some signals can be described by functions of time f(t), which are approximately connected with each other by reversing of time. In this case, there is a possibility to observe transformation of tomograms for such functions. We obtain the correspondence of tomograms for functions f(t) and f(?t) in the vicinity of the frequency scale and illustrate by the examples of electric impedance of rat femoral artery pulsing in two different modes. We show that the use of a reference signal for signal processing of living systems provides new opportunities for employing both – their standard Fourier transforms and tomograms – to obtain new additional and useful information.

     

基于JSP技术的触摸屏实验信息系统

阐述了一种基于JSP技术的触摸屏实验信息系统。该系统的构建重点考虑了通过JSP、JDK与JDBC技术相结合,建立实验信息数据库,在网页上执行SQL命令,使用触摸屏实现查询、添加和删除服务器上实验信息数据库的内容。     

Acousto-Optoelectronic Processors for Communication and Information Processing Systems

The problems of using functional electronics in radio communication and radio-signal processing systems are considered. Different methods of radio access are compared from the viewpoint of throughput and efficiency of frequency resource usage. The prospects for applying systems with code division of channels using matched filters on surface acoustic waves are shown. The results of research and development of various acousto-optical devices, including radio-signal spectrum analyzers, direction finders – frequency meters, and demodulators of phase-shift keyed signals are presented.     

Special Issue on Spatial Solitons

Optical and Quantum Electronics -     

Forewords Special Topic Issue on Nanophotonics

This Special Topic Issue has grown out of research that has been highlighted at the Nanophotonics Conference series held in China for the past three years. The fourteen papers appearing in this issue are a small sampling of the total scope of the Conference. Broadly speaking, the subjects covered by the contributing authors include quantum properties using semiconductor materials, nanocharacterization especially with applications to medical fields, photonic crystals and fibers, and plasmonics.