Title	An Investigation on the Advantages and Limitations of the Current Mobile Applications for Hajj Services
Author	Altyeb Altaher and Omar Mohammed Barukab
Citation	Vol. 19  No. 10  pp. 51-55
Keywords	Hajj services, Mobile apps, Mobile services.

Title	Methods of Mathematical Modelling for Signal Distortion Diagnostics in the Information Channels
Author	Ahmad AbdulQadir AlRababah
Citation	Vol. 19  No. 10  pp. 56-65
Keywords	mathematical modeling, information channels, signal distortions, information reliability, degree of deterioration, signal quality.

Title	A New Fault Detection Scheme for Networked Control Systems Subject to Packet Dropout: A Quadrotor Application
Author	Mariem Atoui, Kaouther Ibn Taarit and Moufida Ksouri
Citation	Vol. 19  No. 10  pp. 66-73
Keywords	Networked control systems, Fault detection, Parity space, Packet dropout, Delay, Quadrotor.

Title	Developing Listening Skills in English Through Computer Assisted Language Learning (CALL) Practices
Author	Sadia Naz, Shumaila Aijaz Memon, Insaf Ali Siming
Citation	Vol. 19  No. 10  pp. 74-77
Keywords	Computer Assisted Language Learning, Experimental Group, Control Group