| Co-Investigator(Kenkyū-buntansha) |
YAZAWA Masao Hokkaido Univ., Grad. School of Agr., Prof., 大学院・農学研究科, 教授 (30001473)
SAITOH Seiichi Hokkaido Univ., Grad. School of Fis., Prof., 大学院・水産科学研究科, 教授 (70250503)
IIDA Kohji Hokkaido Univ., Grad. School of Fis., Prof., 大学院・水産科学研究科, 教授 (40142707)
FUNAMIZU Naoyuki Hokkaido Univ., Grad. School of Eng., Asso. Prof., 大学院・工学研究科, 助教授 (10113622)
SAKURAI Tsunetaro Hokkaido Univ., Grad. School of Med., Prof., 大学院・医学研究科, 教授 (80127084)
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| Research Abstract |
・A Web-XML based distributed database system was developed for archiving and distributing the eco-resource data observed in Hokkaido university by integrating RDBMS, Web, XML and Java technology. (Satoshi Kanai, Fumiki Tanaka, Seiichi Saitoh, Kohji Iida, Hiroshi Tani and Takeshi Kishinami)
・"Hokudai Himawari Server" was developed so that GMS data are distributed via the Intenet on real time with a form extracted from original disk image, which had not been available in Japan. (Tani, Yazawa and Kanai)
・To enhance ability of distribution and re-usability for the eco-resource data, UML/XML/Java 3-layer development method for eco-resource simulation based on ISO 19000 series was proposed and it was applied to ocean ecosystem simulation (Fumiki Tanaka, Seiichi Saitoh and Takeshi Kishinami)
・A data compression method was developed for time series of satellite remote sensing images based on 3D wavelet transform. And a digital watermarking method was developed to protect copyright of the vector-t
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yped geographic information, and to prevent it from tampering. (Satoshi Kanai)
・We examined effects of the past three-decadal and seasonal changes of marine environments, including sea surface temperature, currents, warm-, cold-eddies and sea surface height to stock fluctuations of Ommastrephid squid, Todarodes pacificus, Loligo squid, Loligo bleekeri, and walleye pollock, Theragra chalcogramma in waters around Hokkaido. (Kohei Yamauchi and Yasunori Sakurai)
・A database on abundance distribution of walleye pollock off western Hokkaido, based on the acoustic fish resource survey was constructed. Methods to estimate the horizontal distribution and the vertical distribution of relative abundance of every 50 meters depths were developed. Then the abundance of walleye pollock in spawning ground in the West Coast of Hokkaido was predicted and the three dimensional distribution of fish resources were analyzed. (Kohji Iida)
・Fisheries Oceanography GIS developed by satellite date sets (SST, Chlorophyll-a , night light images etc. ) and fisheries statistics, and its application to near real time on-line system for coastal zone monitoring. (Seiichi Saitoh)
・The seasonal changes of water quality and depth on small ponds in Ishikari peatlands were studied. The continued use of land in the vicinity of ponds as paddy fields would greatly contribute to the preservation of the ponds. (Masao Yazawa)
・A method analyzing relationship between satellite data and meteorological factors of agricultural field was developed in order to estimate crop yield. (Hiroshi Tani)
・Plane images of the soybeans and sugar beets rows were taken by VTR camera. The developed method was utilized to create maps of dry mass, height and growth rate from recorded images. (Shun-ichi Hata)
・We developed a crop growth model to evaluate the effects of sub-optimal temperatures and availability. Thermal image analysis was found to serve as a tool for detecting the difference in crop response to soil water deficit between crop genotypes. (Toshihiro Hasegawa)
・Distribution of healthcare resourses in Hokkaido are surveyed using GIS and proper allocation of healthcare delivery is analysed. Also the quality of digital motion image transmission for telemedicine is assessed. (Tunetoro Sakurai)
・Concepts of data base system and models for integrated water resources management were developed. The system includes models for rain water run off process ; river system ; groundwater system ; fate and transport of contaminants ; structure of water demand ; human risk asscssment. (Naoyuki Funamizu) Less
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