Diagnosis of the implementation of smart grid innovation in The Netherlands and corrective actions

With its potentially disruptive nature, the smart grid can be viewed from both a transformational and an innovation systems perspective. Synthesising these, a research approach is adopted in which a Technological Innovation System (TIS) analysis is combined with a transformational perspective to identify a broader range of success and failure...

A Deployment-First Methodology to Mechanism Design and Refinement in Distributed Systems

Catalyzed by the popularity of blockchain technology, there has recently been a renewed interest in the design, implementation and evaluation of decentralized systems. Most of these systems are intended to be deployed at scale and in heterogeneous environments with real users and unpredictable workloads. Nevertheless, most research in this field...

Understanding the impact of digital service failure on users: Integrating Tan's failure and DeLone and McLean's success model

Although information systems (IS) success has been given much attention in IS literature, failure has received lesser attention. This study empirically validates a model of digital service failure for consumers by integrating three dimensions from Tan's failure model and one dimension from DeLone and Mclean's Information Success model. The...

Structural reliability analysis of a dike with a sheet pile wall: Coupling Reliability methods with Finite Elements

Some dike sections in the Netherlands failed to comply with the safety standards and one of the most promising countermeasures is the construction of retaining walls inside the dike. The Dutch design codes for dikes with retaining walls rely on Finite Element Analysis (FEM) in combination with partial safety factors. However, this can lead to...

System Failure Probability of c-φ Soil Slope Stability using Vertical Random Fields

The need for system failure probability, pf , of soil slope stability that takes into account the spatial variation of soil properties has been acknowledged by the geotechnical profession. The spatial variations of cohesion and friction angle for a c-ϕ soil slope were modeled by one dimensional vertical random field respectively. The cross...

KADAM knowledge-based assistant for diagnosis in aircraft maintenance: Final report

Under contract with the Netherlands Agency for Aerospace Programs (NIVR), the National Aerospace Laboratory NLR has investigated the feasibility of knowledge-based systems to assists ground crews in corrective maintenance of complex aircraft systems. For this feasibility study, the Fokker airconditioning system was chosen as a representative...

Flight simulator evaluation of advanced MLS procedures

The flight simulator study described in this report concerns an evaluation of manually flown, flight director aided, curved MLS approach and departure procedures with a simulated wide-body transport aircraft. Four curved approach paths and two departure procedures have been evaluated, where these procedures were determined to be beneficial from...

Control loops with human operators in space operations: part III: rendezvous and docking operations and model analysis of performance with human-in-the-loop

This report presents the results of an illustrative analysis of human-in-the-loop rendezvous and docking (RVD) performance, for the purpose of demonstrating the practicality of applying human engineering methods and techniques, introduced in Part I of this project, to the analysis of control loops with human operators in space operations....

Failures in advanced flight control systems of future transport aircraft

Future transport aircraft will be different from to-day's in that they will be designed to be statically neutrally stable or even unstable to improve economics, while the stability will be provided by means of a fly-by-wire flight control system. Since this system will be flight critical it is necessary to develop a philosophy on the treatment...

A model and experimental analysis of pilot decision making behaviour for various approach conditions

This report deals with an investigation of pilots' failure detection performance in a realistic moving-base flight simulator. The task considered was the monitoring of stabilized automatic approaches. Abnormal conditions (excessive windshears or system failures) were to be detected on the basis of unacceptable deviations of displayed variables...

A model of the human decision maker observing a dynamic system

In this report a model of the human observer and decision maker is described. A submodel of the human observer is formulated in linear estimation theoretical terms including the perception of the displayed information of a linear process and the central information processing stage. The subsequent decision process is described in terms of...