The atom-bond connectivity (ABC) index is a degree-based molecular descriptor, that found chemical applications. It is well known that among all connected graphs, the graphs with minimal ABC index are trees. A complete characterization of trees with minimal ABC index is still an open problem. In this paper, we present new structural properties of trees with minimal ABC index. Our main results r...

Activity-Based Costing (ABC) was developed in the mid 1980s by Kaplan and it has been applied very popular in developed countries with obvious advantages. Although ABC system has more advantages than traditional costing (TC) system, but in today’s competitive economic environment it has not met fulfilled provision of sufficient information for decision-making, especially single ABC method ignor...

Developing a platform for in vitro cartilage formation would enhance the study of cartilage development, pathogenesis, and regeneration. To improve neocartilage formation, our group developed a novel self-assembly process for articular chondrocytes, which has been improved in this study using a novel combination of catabolic and anabolic agents. TGF-β1 was applied in conjunction with the enzyme...

The Artificial Bee Colony (ABC) algorithm is an active field of optimization based on swarm intelligence in recent years. Inspired by the mutation strategies used in Differential Evolution (DE) algorithm, this paper introduced three types strategies (“rand”, “best”, and “current-to-best”) and one or two numbers of disturbance vectors to ABC algorithm. Although individual mutation strategies in ...

Previous studies have suggested that altruistic behaviors for children and grandchildren (ABC) have a complex mechanism for psychiatric morbidity among parents and grandparents. The interaction between ABC and sense of obligation to children/grandchildren (SOC) may help to provide a better understanding of the association between ABC and psychiatric morbidity. In this study, we seek to investig...