Title	Influential Commodities Using Hat Values in Stochastic Laspeyres Price Model with AR(1) Errors
Author	Arfa Maqsood, S. M. Aqil Burney, Tahseen Jilani, Suboohi Safdar
Citation	Vol. 19  No. 4  pp. 96-101
Keywords	Laspeyres index Numbers, Serial Correlation, Autoregressive Process, Hat matrix, Influential Commodities

Title	Assurance Quality and Efficiency in Corporate Information Systems
Author	Ahmad AbdulQadir AlRababah
Citation	Vol. 19  No. 4  pp. 87-95
Keywords	corporate information system, survivability system, corporation, survivability, survivability methods, survivability system structure, hardware, software, information support, information protection.

Title	Development methods of implementing analytical management information systems for technological monitoring of complex industrial purposes
Author	Ali F. Dalain
Citation	Vol. 19  No. 4  pp. 79-86
Keywords	analytical information systems, technological monitoring, Supervisory Control, Data Acquisition, DBMS.

Title	Blockchain for Controlling Hajj and Umrah Permits
Author	Meshal Alotaibi, Mohammad Alsaigh and Mohammad Yamin
Citation	Vol. 19  No. 4  pp. 69-78
Keywords	Blockchain, Hajj, Umrah, Smart Contract, Consensus, IoT, Pilgrims.