Stata decentralized installation
for your question, subtract the mean from each measurement.
The cost of mining equipment is mainly mining equipment cost, electricity cost, time cost (technology network cost is ignored)
I. mining equipment cost
with the popularity of bitcoin, more and more people join in mining, and the difficulty of mining also increases. Mining equipment is also developed from ordinary computer to professional mining machine, and mining machine cost fluctuates, If the currency price is high, the cost will be high, and if the currency price is low, the cost will be lower
and the prices of bitcoin machines with different models and parameters are also different. At present, the well-known bitcoin machines on the market are ant S9 and Shenma m3. The current price of bitcoin is 50000, and the cost is less than 10000
Electricity cost and technical management electricity cost is also a very important cost for mining. The power consumption of bitcoin mining machine is relatively large, which will inevitably proce a large amount of electricity cost when the mining machine is running 24 hours, while the cost of household electricity is relatively high, so the current trend of mining is transformed into the centralized mining of large mines, Generally, the electricity price will be lower and cheaper than that at home, and the mine has professional technicians to solve certain technical problems
if you want to know more about the mining field, please send me a private message
if you want to know more about the mining field, you can send me a private message
I've just tried the method upstairs, which works. I'd like to add a few experience
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"spinst"_ Mais "this step is very important, we must quietly wait for the system to download and install all the files
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If "spinst"_ If the file installation fails, try to run it again
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"SSC install metadata. PKG" will only be executed if all the above steps are completed without errors. If it cannot be executed, you need to do "spinst" again_ mais”
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the long string of commands provided upstairs in the window do file editor on the menu bar of Stata, and then save it as the file in the directory of Stata 16.0, named "profile", with the file format of. Do. The purpose of this step is to automatically load the "profile. Do" file every time Stata is started, so as to save the trouble of manual loading every time
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after the above process is completed, restart Stata 16.0, and all the calculation commands of "meta analysis" will appear in the "user" menu bar< br />
tool materials
win7 system computer
method steps
first, in this path to create the eqation folder, open the Microsoft shared folder, and then use the right mouse button to click the folder blank → new → folder → rename to eqation folder, and then try to reload
② if you still don't pass, you may not have permission. You can directly right-click setup.exe setup → run as an administrator
③ in case of such a prompt, you can also give the corresponding folder permission directly: C: 92; ProgramData\ Microsoft\ Windows\ Start Menu\ Programs\ Microsoft,
4. Right click the windows folder (parent folder) → properties
⑤ windows properties → security → include the current account → full control → allow (check) → confirm
6. This kind of error usually occurs in the process of installing office software, and it is a 64 bit operating system. The processing method is the same as above (new folder, authorized installation), but the paths are different. C:\ Program Filesx86\ Common Files\ Microsoft Shared\ OFFICE14\ 2052,
⑦ if there is an error in installing office2013 software, just authorize the office folder, C: 92; ProgramData\ Microsoft\ OFFICE;< (8) error 1303. Not all of them are unique to the installation of office software. The main reason is that the operating system does not have enough permissions. You can try to include the current account into the administrator group and improve the permissions of the account.
