在Linux系统中实现对PET的仿真，给予VGATE平台实现，初步提出变结构的设想，提高成像的空间分辨率，减弱DOI效应的影响。(In the Linux system, the simulation of PET is realized and the VGATE platform is implemented. The tentative idea of changing the structure is proposed, the spatial resolution of the ima

基于OpenGL的二维小狗动画，可以通过鼠标改变小狗跑，走，跳，静止的运动状态，可以使小狗发出声音，可以改变小狗颜色。(About OpenGL two-dimensional puppy animation, you can realize the puppy's running, walking, jumping, and still moving state. It can make a sound and change the puppy's color.)