Useful tips for everyday
What is the relation between phase shift and frequency in low pass filter? The center frequency (=1) has a phase shift of +45°. If the…
How to download A Grib file in wgrib? The “get_grib.pl GRIB_URL OUTPUT” uses the filtered inventory to select the fields from GRIB_URL to download. The…
What is Oracle partitioning list? List partitioning enables you to explicitly control how rows map to partitions by specifying a list of discrete values for…
What is the ROI of social media? Social media ROI is a metric showing the amount of value generated by your investments in social media.…
How to run multiple commands with xargs Stack Overflow? In the example above, xargs takes echo % as the command argument. But in some cases,…
What is the syntax of nested IF statement? Nested if statements mean an if statement inside another if statement. Yes, both C and C++ allow…
How to discharge iMac capacitor? Before beginning any work on your iMac: Unplug the computer and press and hold the power button for ten seconds…
How do I sum specific rows and columns in Excel? If you need to sum a column or row of numbers, let Excel do the…
How do you test low voltage lighting? To test the voltage delivered to a light, remove the bulb and apply the multimeter’s leads to the…
What are the best Photoshop settings for print? There are 3 main attributes you should set up correctly when preparing a document for print in…