Search | Korea Science

Kim, Chang-Jo;So, In-Sup;Huh, Moo-Ryong
- Journal of agriculture & life science
- /
- v.43 no.3
- /
- pp.1-6
- /
- 2009
This study has been carried out to measure the extent of damage for Witches' broom of cherry trees planted as street trees along the 5.16 road around the Halla Mountain. This study is expected to provide effective measures to prevent the infection of witches' broom. Among the cherry trees examined, almost all the trees of 40 years or over were severely infected. Those around 30 years old were infected as well, though they showing medium level of disease symptoms. However, cherry trees of less than 23 years were observed to be healthy without showing any symptoms. Cherry trees spontaneously growing within 30m width of the 5.16 road in the section from Sanchondan to Kyunwolak were less severely infected by Witches' broom (Taphrima waesneri), though there was a difference by tree age.

Jaehong Lee;Duksu Kim
- Journal of Broadcast Engineering
- /
- v.28 no.1
- /
- pp.21-30
- /
- 2023
Computer-generated holography requires much more computation costs and memory space rather than image processing. We implemented the diffraction calculation with low-precision and mixed-precision floating point numbers and compared the processing time and quality of the hologram with various precision. We compared diffraction quality with double, single and bfloat16 precision. bfloat16 shows 5.94x and 1.52x times faster performance than double precision and single precision. Also, bfloat16 shows lower PSNR and SSIM and higher MSE than other precision. However, there is no significant effect on reconstructed images. These results show low precision, like bfloat16, can be utilized for computer-generated holography.
https://doi.org/10.5909/JBE.2023.28.1.21 인용 PDF