8.1 Setting Up A Model Order Reduction Problem This section describes a number of different ways of setting up a model reduction problem. In contrast with the case of LTI feedback optimization, when the most natural problem formulation has a satisfactory solution (H2 or H-Infinity optimization via Riccati equa­ tions), no efficient solution is known for the most natural formulation of the model...

Navigating a Concept Lattice Family w.r.t a Query Introduction Relational Concept Analysis (RCA) constructs conceptual abstractions from a relational context family (RCF). An RCF is sets of objects described by both own properties and inter-object links. It generates several lattices that are connected via relational attributes. Navigating such interrelated lattice family in order to find conce...

OpenPuff is recognised as one of the leading tools in video steganography for its capability to securely hide information. This is in contrast to a number of video steganography tools that apply outdated and highly insecure techniques such as EOF data injection. However, even OpenPuff has subtle vulnerabilities that can be easily exploited. In this talk we propose a method to detect the presenc...

Center for Spatial Information Science (CSIS) has developed and run our own Clearinghouse[1] for various academic researchers to share spatial data since 1999. This paper presents activities of the academic Clearinghouse and the backgrounds of it.

In this paper, the reachability problem for a class of second-order LTI switched systems is solved. The reachability problem is first explored for switched systems consisting of two subsystems and switching control laws are proposed that can drive the system state from an initial point to a target point via finitely many switches. The method is then extended to the case of several subsystems. T...

This article examines how the introduction of electronic communication in the Architectural-Engineering-Construction industry is impacting on two domains of management, namely production management and project management. In the study, traditional organizations are associated with production management, and project-based organizations are associated with project management. By looking at the us...

A tool is introduced that uses a novel technique to enable users to explore two-dimensional views of high dimensional gene expression data sets. Unlike other such tools, the interface is intuitive and efficient, allowing the user to easily select views that meet their requirements. The tool is tested on publicly available gene expression data sets and demonstrated to find views that show the se...

This paper reports on the use of ‘co-operative evaluation’ to investigate tourists' decision making behaviours when using Internet resources. Co-operative evaluation is a qualitative ‘think-aloud’ technique used to investigate usability problems in interactive systems. In this study, the technique is adapted to examine both interaction problems and decision-making activities of subjects attempt...

Godwin Mjema at the Economic Research Bureau and Servacius Likwelile at the Department of Economics at the University of Dar es Salaam helped with logistics in Tanzania and Peter Engseld assisted during the experiments in Sweden. We are grateful for comments by James Cox, Catherine Eckel, Glenn W. Harrison, Stephen Knack and two anonymous referees. Earlier versions of the paper have been presen...

The compensation of LTI systems and the evaluation of the according uncertainty is of growing interest in metrology. Uncertainty evaluation in metrology ought to follow specific guidelines, and recently two corresponding uncertainty evaluation schemes have been proposed for FIR and IIR filtering. We employ these schemes to compare an FIR and an IIR approach for compensating a second-order LTI s...