九维的卡尔曼滤波跟踪算法，包括xyz三方向和各方向的位置，速度，加速度。-Nine-dimensional Kalman filter tracking algorithm, including the three xyz direction and the location of the direction, velocity, acceleration.
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.000971s ]
SELECT `a`.`aid`,`a`.`title`,`a`.`create_time`,`m`.`username` FROM `jrk_downrecords` `a` INNER JOIN `jrk_member` `m` ON `a`.`uid`=`m`.`id` WHERE `a`.`status` = 1 GROUP BY `a`.`aid` ORDER BY `a`.`create_time` DESC LIMIT 10 [ RunTime:0.087930s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001004s ]
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SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.000957s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.003140s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.000908s ]
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SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.025651s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.001431s ]
UPDATE `jrk_articles` SET `hits` = 2 WHERE `id` = 147771 [ RunTime:0.014546s ]
