This book is composed of selected papers from two very important conferences, IWIFSGN'2024—Twenty Second International Workshop on Intuitionistic Fuzzy Sets and Generalized Nets held in  Warsaw, Poland, on October 18, 2024, and BOS/SOR 2024, National Conference on Operational and Systems Research, held in Warsaw, Poland, on October, 17–18, 2024. IWIFSGN-2024 is one of premiere conferences on fuzzy logic, notably on extensions of the traditional fuzzy sets, in particular the Intuitionistic Fuzzy Sets. Moreover, a considerable part of the book is devoted to the Generalized Nets (GNs). BOS/SOR-2924 is one of premiere conferences on operational and systems research and their applications.  A joint publication of selected papers from the two conferences follows a long tradition of such a joint organization and—from a substantial point of view—combines systems modeling, systems analysis, broadly perceived operational research, notably optimization, decision making, and decision support, with various aspects of uncertain and imprecise information and their related tools and techniques. This has attracted been welcome by the research community interested in broadly perceived various aspects of uncertain and imprecise information and their related tools and techniques applied for the analysis and solution of many real-world problems.