Background: Despite concerted research efforts, the collection of domestic waste remains poorly understood in terms of financial and environmental cost drivers. Detailed studies of specific systems, yielding limited broader understanding, remain the norm. Methods: This study presents flexible...

The gravity model, which is applied to international trade, explains the conceptual models of international business. It has been used in various areas of the global economy, such as trade, foreign direct investment, and even the determinants of tourist demand at the level of countries and...