Analysis of Mathematical Model 1 Communication Acoustics, Speech, Audio, Psychoacoustics 1 Development Education 1 E-Learning 1 Ecotourism; 1 Geochemistry 1 Higher Education 1 Horticulture 1 Inexpensive Geophysical Instruments, 1 Mathematical analysis 1 Methodologies Tools 1 Petroleum reserves 1 Petroleum--Geology 1 Petroleum--Prospecting 1 Preserve post harvest quality and safety in fresh cut fruits and vegetables 1 Sedimentary rocks 1 Tourism 1