第一步,把FC值进行Log2的转化,比如某代谢物质等在实验组是对照组的4倍,log2(4)=2,同样的如果是0.25,转换后的结果就是-2。 【注:Excel中的转换公式为:=log(number,base),其中number为真数,即excel中的格子位置(如A1),base为底数,此处为2,当然也可以为10,在后面P值转换中会用到,在转换的格子中可以写...
y = logax (a>0且a≠1叫做对数函数,其中x是自变量,函数的定义域是( 0,+∞ ) log函数=LOG(number, [base]) number参数是真数,也就是得值。a的x次方等于n(aX= n)。number=n。 base参数是可选参数,如果不输入默认为10。base=a。 在实数的范围内,负数是没有对数的,所以number参数不能为负数。 另外0...
Input check serial number:回车在弹出窗口输入LogBase授权序列号,选择【OK】,回车完成注册。设备序列号注册工作,通常在设备出厂时已经完成。因此,在设备安装时不需要用户配置此项。3.5 日志服务配置选择【Set Log Server】设置日志服务,回车;如图3.5.1所示:图3.5.1 设置日志服务参数可设置两台日志接受服务器,选择【...
ComRegSetup.log Records the initial installation of COM registration results for a site server. Site system server dataldr.log Records information about the processing of MIF files and hardware inventory in the Configuration Manager database. Site server ddm.log Records activities of the discovery dat...
Natural logarithmis a logarithm to the base e: ln(x) = loge(x) Whene constantis the number: or See:Natural logarithm Inverse logarithm calculation The inverse logarithm (or anti logarithm) is calculated by raising the base b to the logarithm y: ...
这种方式,JIM GRAY等人在1981年就提出了,在《The Recovery Manager of the System R Database Manager》中提出了Shadow Paging的方法。事务对文件进行修改时,会获得新的Page,并加入Current的Page Table,所有的修改都只发生在Current Directory;事务Commit时,Current指向的Page刷盘,并通过原子的操作将Current的Page ...
mysqlbinlog --base64-output=decode-rows -v mysql-bin.000345 > mysql-bin.0003452.txt 输出: # at 81880980 #201130 15:16:15 server id 3341167209 end_log_pos 81881102 CRC32 0xbeafaa0c Table_map: `huishi-server`.`hs_capital_attachment_sync_info` mapped to number 55827 ...
intact. When you are recovering a database to the point of a failure, the tail-log backup is the last backup of interest in the recovery plan. If you cannot back up the tail of the log, you can recover a database only to the end of the last backup that was created before the ...
To calculate the logarithm in base 2, you probably need a calculator. However, if you know the result of the natural logarithm or the base 10 logarithm of the same argument, you can follow these easy steps to find the result. For a number x: Find the result of either log10(x) or ...
要查看 relay 日志得使用SHOW RELAYLOG EVENTS,如果使用SHOW BINLOG EVENTS会报找不到文件的错误 代码语言:javascript 复制 mysql>show binlog eventsin'relay-bin.000197'from4limit4;ERROR1220(HY000):Error when executing commandSHOWBINLOGEVENTS:Could not find target log ...