Title	Changes, States, and Events: The Thread from Staticity to Dynamism in the Conceptual Modeling of Systems
Author	Sabah Al-Fedaghi
Citation	Vol. 20  No. 7  pp. 138-151
Keywords	Static changes conceptual model finite state machine requirements modeling static states events behavior specification

Title	Implementation of VDI based Computer Laboratory in University Education System to Save Energy, Cost, and Adapt Technology Upgradation
Author	Md. Alam Hossain, Md. Tuhin Reza, Nazmul Hossain, Md Asif Nashiry, Md Shafiuzzaman
Citation	Vol. 20  No. 7  pp. 130-137
Keywords	Virtual desktop Green Computing Cloud computing Virtualization techniques Energy consumption

Title	ASLR: Arabic Sign Language Recognition Using Convolutional Neural Networks
Author	Asma Althagafi, Ghofran Althobaiti Tahani Alsubait, Tahani Alqurashi
Citation	Vol. 20  No. 7  pp. 124-129
Keywords	Arabic Sign Language Convolutional Neural Networks CNN

Title	Comparison of Four Genetic Crossover Operators for Solving Distance-constrained Vehicle Routing Problem
Author	Khawlah Alabdulkareem and Zakir Hussain Ahmed
Citation	Vol. 20  No. 7  pp. 114-123
Keywords	Vehicle routing problem, Distance-constrained, NP-hard, Genetic algorithm, Sequential constructive crossover.