The future European Train Control System (ETCS) will be based on mobile communication and overcome fixed blocks in order to increase track utilization and interoperability throughout Europe. Data processing on board the train and in radio block centers as well as the radio communication link are crucial factors for the safe and efficient operation. Their real-time behavior under inevitable link...

Saudi Arabia (officially, Kingdom of Saudi Arabia) was established as a sovereign country in 1932, by its founder King Abdulaziz Al-Saud who led a successful campaign that lasted 30 years following the conquest of Riyadh (official capital) to unite large swathes of the Arabian Peninsula. With an area of 2,150,000 km, Saudi Arabia occupies 80% of historical Arabia and is the 13th largest country...

Other psychologists, for example E. Durbin and John Bowlby, believe that aggression is characteristic of man by nature. It gives rise to sublimation projection when a person turns their dissatisfaction into prejudice hatred other races, religions, nations or ideologies