Every control design involves manipulating a controller so that a controlled plant behaves as desired. Various methodologies for manipulating the controller for certain well-defined classes of control problems have been well developed and proven. Despite great efforts, similar techniques are not available for more general classes of control problems involving nonlinear systems. Incorporating ad...

Object-oriented design (OOD) and programming (OOP) offer many advantages for developing modular crop models. The model structure is well-defined, reuse of code is facilitated through inheritance, and data can be hidden (encapsulated) inside objects that correspond to physical components of the real system, e.g. roots, stems, leaves, or soil layers. However, OOD is best suited to describing the ...

We solve the design spectrum problem for all theta graphs with 10, 11, 12, 13, 14 and 15 edges.

-Gain scheduling has proven to be a successful design methodology in many engineering applications. However in the absence of a sound theoretical analysis, these designs come with no guarantees on the robustness, performance, or even nominal stability of the overall gain scheduled design. This paper presents such an analysis for one type of gain scheduled system, namely, a linear parameter-vary...

In this paper, we propose a framework to systematically analyze the structural form and thematic content of codes of ethics related to Information and Communication Technology (ICT codes of ethics). Then we apply this framework, within a sample of 30 organizations. Our purpose is to assess the organizational ethical positioning advocated by these ICT codes of ethics, using an adaptation of Kohl...

A key point in the CMD-problems is that the universe to be specified is not an example from a textbook but a piece of reality like a bank or an airport. In addition, the specification has to be somehow extracted from multiple, very informal and often hardly consistent descriptions provided by different people. Moreover, as the process of information system design is going on, and mutual underst...

Cassava mosaic disease (CMD) is the most widespread and economically important disease of cassava (Manihot esculenta Crantz) in tropical Africa. A disease of cassava was first described in East Africa in the nineteenth century (Warburg, 1894) and cassava mosaic, as it came to be called, was subsequently reported as spreading throughout the cassava-growing areas of Central and West Africa (Calve...