As readily as night follows day, Arsenal's concession of Joleon Lescott's goal on Sunday prompted the standard criticisms of the zonal marking system. A zone never scores a goal. A running jump beats ...

Zonal marking at corners – defending pre-assigned zones, rather than sticking to a specific opponent – is generally ridiculed in British circles. Pundits and commentators claiming to be experts of the ...

Zonal combustion monitoring systems provide a way to improve burner fuel and/or airflow control. Such systems combine online combustibles (COeq) and excess oxygen (O 2) sensors with information about ...