List of Articles Ratio analysis Open Access Article Abstract Page Full-Text 1 - Artificial Neural Network Model for Predicting Insurance Insolvency Ade Ibiwoye Olawale Ajibola Ashim Sogunro Open Access Article Abstract Page Full-Text 2 - Evaluating the Efficiency of Two-stage Networks using Ratio Analysis Asieh sadat Hatami Morteza Shafiee Mozhdeh Rabbani Mohammad Reza Mozaffari Open Access Article Abstract Page Full-Text 3 - Early Warning Model for Solvency of Insurance Companies Using Machine Learning: Case Study of Iranian Insurance Companies Saeed Naseri Khezerlou Atousa Goodarzi Open Access Article Abstract Page Full-Text 4 - Modelling Robust Optimization in DEA With Ratio Data: A Case Study of Commercial Banks Javad Gerami