Book excerpt: The following articles have been published: Neutrosophic Axiomatic System; Neutrosophic Vague Set Theory; Neutrosophic cognitive maps for modeling project portfolio interdependencies N-Valued Interval Neutrosophic Sets and Their Application in Medical Diagnosis; A Comparison of Combined Overlap Block Fuzzy Cognitive Maps (COBFCM) and Combined Overlap Block Neutrosophic Cognitive Map (COBNCM) in finding the hidden patterns and indeterminacies in Psychological Causal Models: Case Study of ADHD; An Example of Guiding Scientific Research with Philosophical Principles Based on Uniqueness of Truth and Neutrosophy Deriving Newton's Second Law and the like; On Neutrosophic Ideals of Neutrosophic BCI-Algebras.