This paper presents a framework for the modeling and analysis of business model designs involving a network of interconnected business entities. The framework includes an ecosystem-modeling component, a simulation component, and a serviceanalysis component, and integrates methods from value network modeling, game theory analysis, and multiagent systems. A role-based paradigm is introduced for characterizing ecosystem entities in order to easily allow for the evolution of the ecosystem and duplicated functionality for entities. We show how the framework can be used to provide insight into value distribution among the entities and evaluation of business model performance under different scenarios. The methods are illustrated using a case study of a retail business-to-business service ecosystem.

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As the chip density grows, wiring circuits on a VLSI chip becomes hard. It is then important to leave feedthrough channels in the layouts of cells and macros. One strategy to achieve this goal is to keep wires on their respective wiring grids. This requirement presents a new constraint to the compaction problem of cells and macros. In this paper, a new efficient algorithm is proposed to solve such compaction problem on multiple grids.