A hierarchical MEMS synthesis and optimization architecture has been developed for MEMS design automation. The architecture integrates an object-oriented component library with a MEMS simulation tool and two levels of optimization: global genetic algorithms and local gradient-based refinement. An object-oriented data structure is used to represent hierarchical levels of elements in the design l...

We present a new method for representating the state spaces of hierarchical level of detail descriptions, or scene descriptions with multiple hierarchical levels of detail. This representation, called a level of detail graph, permits the investigation and exploration of the state spaces of non-hierarchical and hierarchical level of detail optimization algorithms. We present algorithms for gener...

In this paper, we propose an approach for solving hierarchical multi-objective optimization problems (MOPs). In realistic MOPs, two main challenges have to be considered: (i) the complexity of the search space and (ii) the non-monotonicity of the objective-space. Here, we introduce a hierarchical problem description (chromosomes) to deal with the complexity of the search space. Since Evolutiona...

This paper is one outcome of my very productive collaboration with Stratos Pistikopoulos while we were both at Imperial College London. It presents an attempt to take a truly integrated approach to the design of a process and its control system. Based on an optimisation framework, the paper illustrates the complexities involved in implementing a fully integrated approach to this challenging pro...

The Networks Mobility (NEMO) Protocol is a way of managing the mobility of an entire network, and mobile internet protocol is the basic solution for Networks Mobility. A hierarchical route optimization system for mobile network is proposed to solve management of hierarchical route optimization problems. In present paper, we study Hierarchical Route Optimization Scheme using Tree Information Opt...

A model for a hierarchical hybrid system of a harddisk device is presented. Based on the implementation of this model in Matlab, optimization techniques between the high-level discrete layers are evaluated.

Separate compilation is an important tool for coping with design complexity in large software projects. When done right it can also be used to create software libraries, thus promoting code reuse. But separate compilation comes in various flavors and has many facets: namespace management, linking, optimization, dependencies. Many programming languages identify modular units with units of compil...