Is "using std::begin;" a good practice

As I have read, begin(some_vector) is more standard than some_vector.begin() because of array support... and as know also, using of using keyword is not much desirable behavior. However, I also see lot of codes that contain just these two usings:

using std::begin;
using std::end;

Does that is considered good or bad practice? especially when too many begin and end are needed.