盲嵌入和线性相关检测，数字水印，例子只嵌入1比特信息来说明-Blind embedding and linear correlation detection, digital watermarking, for example, embedding only one bit of information to illustrate
SHOW FULL COLUMNS FROM `jrk_downrecords` [ RunTime:0.001888s ]
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:0.143094s ]
SHOW FULL COLUMNS FROM `jrk_tagrecords` [ RunTime:0.001740s ]
SELECT * FROM `jrk_tagrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 20 [ RunTime:0.002966s ]
SHOW FULL COLUMNS FROM `jrk_member` [ RunTime:0.001799s ]
SELECT `id`,`username`,`userhead`,`usertime` FROM `jrk_member` WHERE `status` = 1 ORDER BY `usertime` DESC LIMIT 10 [ RunTime:0.005912s ]
SHOW FULL COLUMNS FROM `jrk_searchrecords` [ RunTime:0.001626s ]
SELECT * FROM `jrk_searchrecords` WHERE `status` = 1 ORDER BY `num` DESC LIMIT 5 [ RunTime:0.008926s ]
SELECT aid,title,count(aid) as c FROM `jrk_downrecords` GROUP BY `aid` ORDER BY `c` DESC LIMIT 10 [ RunTime:0.024124s ]
SHOW FULL COLUMNS FROM `jrk_articles` [ RunTime:0.002427s ]
UPDATE `jrk_articles` SET `hits` = 1 WHERE `id` = 137101 [ RunTime:0.001744s ]
