Title	Protecting GIS Data Using Cryptography and Digital Watermarking
Author	Yasser Dakroury, Ismail Abd El-ghafar, Eng. Ashraf Tammam
Citation	Vol. 10  No. 1  pp. 75-84
Keywords	GIS, Data protection, Cryptography, Digital watermarking

Title	Concurrency Conflicts Resolution for IoT Using Blockchain Technology
Author	Amr Morgan, Ashraf Tammam, and Abdel-Moneim Wahdan
Citation	Vol. 21  No. 7  pp. 331-340
Keywords	Blockchain, distributed systems, decentralized access management, internet of things, concurrency management problem

Title	Concurrency Conflicts Resolution for IoT Using Blockchain Technology
Author	Amr Morgan, Ashraf Tammam, and Abdel-Moneim Wahdan
Citation	Vol. 21  No. 7  pp. 331-340
Keywords	Blockchain, distributed systems, decentralized access management, internet of things, concurrency management problem