conceptual framework 123 human 95 Humans 65 article 57 Article 48 female 35 adult 32 male 30 regulatory framework 28 Conceptual frameworks 26 controlled study 26 Metalorganic frameworks (MOFs) 25 Framework 23 China 22 Learning frameworks 22 United States 22 Deep learning 21 Organometallics 21 Theoretical framework 21 theoretical study 20 Sustainable development 19 human experiment 19 institutional framework 19 sustainability 19 Ecosystems 18 Economics 17 Learning systems 17 Malaysia 16 algorithm 16 Decision making 15