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This is my web space. Now it's with a few articles. Wish they are helpful. Communication is welcome. Main pages are of Chinese and English version. Here is another start page in Chinese.

Articles


in English

Quantum Physics: Doesn't the atom in ground state radiate?



       Textbooks told us that the atom in ground state does not radiate and this is contradicted with the classical electrodynamics. The classical electrodynamics says that the accelerating charges always emit electromagnetic waves......


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in English

Fractal: The Mandelbrot Set's Image Generation through Accurate Computation - C++/GMP Implementation and Verification



       Massive floating point computation is normally needed to generate fractal images. This requires very high capacity of computation. Common floating point calculation will inevitably meet the problem of error. Without error analysis, the correctness of the result is hard to justify.
       In computing the Mandelbrot set, I restrict the computation range to those of finite decimals, so to run absolutely accurate calculations......


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in English

Web site: "Process Backup" of Server Programs



       I am trying to construct a web site. As a software developer, he worries about server crash most. Even the server can be restarted, some resources get lost. This incurs one need: can there be a backup copy for recovery of the crashed server program as same as the recovery from suffering a data loss through data backup ? I ever read about "passing file descriptor" in Richard Stevens' Advanced Programming in the UNIX Environment. This powerful ability, which is like 'dup/dup2', but between processes, has some meaning of generating a 'backup copy'. And this leads me to an idea to use it to realize "process backup". Of course, it is not a process image backup, but to back up file descriptors in a process, including the networking sockets I wish to handle.
       I wrote a small program to try this idea and succeeded. Need to test it in server program for large-scale service......


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in English

The Making of This Site's Index Web Log Page: Using METAFONT



       If you feel a bit interested in images on this website's index web log page, this article introduces it......


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in English

Link To Chen's fast DCT



       A c and mmx/HLA implementation of a fast DCT algorithm by Chen......


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in English

A Wonderful Paper Introducing Ewald-Oseen Extinction Theorem



       The paper talked about in the title illustrated the proof of Ewald-Oseen theorem in detail, which I reckon rare and wonderful......


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Notes




       Sorry, this part doesn't get an English translation. If you want to have a look at the Chinese version, it is here ...





Photos


in English

Visit the OVC Expo



       It is the 2016 OVC Expo ...


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