gaijin_smith

1.这是一个matlab滤波程序，内含空域二维卷积滤波；频域高通滤波；三级butterworth高通滤波器设计。 2.效果较好，内含较为翔实的代码注释，通用性，可移植性较强。(1. This is a Matlab filtering procedures, airspace containing 2D convolution filter; Frequency- domain high pass filter; 3 butterworth high pass filter design. 2. The result is better and more informative containing the code notes, general, portability strong.)

matlab基础知识讲解，英文版，适合四级英语水平及以上的初学者使用(matlab basic knowledge to explain, in English, and English for more than four beginner)

matlab下快速傅里叶变换的分析及代码。(The matlab fast Fourier transform analysis and code.)

说明：  图像潜载信息映射技术,基于matlab基础知道编程使之能够在公开图中潜载隐藏另一幅图象。(the technology about translating the image embeded )

matlab fingerprint extraction

matlab模拟地球绕太阳公转的程序代码！(Matlab simulation of the Earth around the sun to the program code!)

格子LBM计算典型参考，不错的介观计算方法(LBM calculation of the typical reference grid, a good mesoscopic method)

极大似法编的系统辨识malab源码，这是基于概率的方法，可以直接拿来作为极大四然的程序短，应用于各种极大四然的实例(Maximum method of system identification malab source)

only the last question i can t think anymore,please check the other two answers above.

We compare the energy efficiency of some transmission schemes in wireless sensor networks. By constraining the system to end-to-end throughput requirements, we assume that the nodes in multi-hop and cooperative schemes operate at a spectral efficiency which is twice that of the single-hop transmission. By taking into account the energy consumption of the RF circuitry, we show that cooperation may be considerably more energy efficient than non-cooperative schemes even in small transmission ranges, specially if a feedback channel is available.