Soft sensing for gas-lift wells

This paper considers the use of extended Kalman Filtering as a soft-sensing technique for gas-lift wells. This technique is deployed for the estimation of dynamic variables that are not directly measured. Possible applications are the estimation of flow rates from pressure measurements or the estimation of parameters of a drift-flux model. By...

A comparative study of fast dense stereo vision algorithms

With recent hardware advances, real-time dense stereo vision becomes increasingly feasible for general-purpose processors. This has important benefits for the intelligent vehicles domain, alleviating object segmentation problems when sensing complex, cluttered traffic scenes. In this paper, we present a framework ofreal-time dense stereo vision...

Scalable HIL simulator with mixed real and virtual sensing capabilities

The advance in Intelligent Vehicle Systems (IVS) puts emphasis to vehicle-vehicle and vehicle-environment interactions. Sensing and sensory data interpretation play ever increasing role because sensing becomes the primary way of collecting information about the environment. In the IVS application domain the environment is unstructured, which...

Changing of ballistic parameters from aged gun propellants

The various properties of an SB and a DB gun propellant were investigated before and after artificial ageing. It was found that the decrease of nitrocellulose (NC) molecular weight, due to ageing of gun propellants, leads to a decrease of the mechanical integrity of the propellant grains. The effect of grain fracture on the peak pressure was...

Near real-time geocoding of SAR imagery with orbit error removal.

When utilizing knowledge of the spacecraft trajectory for near real-time geocoding of Synthetic Aperture Radar (SAR) images, the main problem is that predicted satellite orbits have to be used, which may be in error by several kilometres. As part of the development of a Dutch autonomous mobile ground station to receive and process satellite SAR...

Assessment of the influence on vehicle emissions of driving style, vehicle technology and traffic measures

The influence of traffic measures and driving style on different vehicle emissions and on primary energy consumption, and the definition of vehicle parameters influencing the relation between them, is an interesting issue to be assessed in order to allow more realistic estimations of the impact of transport on air pollution and an optimisation...

Ergonomic ship brigde design supports minimum manning

The Royal Netherlands Navy is planning to design a hydrographic survey vessel to replace the currently used vessels in order to extend the tasks of an Officer by reducing require manning. The design includes the arrangements of workspace and the detailed design of workplaces. Digital human models are used to check the anthropometric qualities of...

Gebruik van simulatie-tools bij de integratie van energiebesparEND<br />SETe componenten in gebouwen in de huidige ontwerppraktijk: rapportage enquêtes

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Gebruik van simulatie-tools bij de integratie van energiebesparEND<br />SETe componenten in gebouwen in de huidige ontwerppraktijk: rapportage case-studies

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The maintenance manager: collecting and analysing maintenance data of wind turbines

With the increasing maturity of wind energy, designers, manufacturers and suppliers are putting more emphasis on lowering the operational costs over the total lifetime in order to improve the economics of wind energy projects. Especially the economics of offshore wind parks will become sensitive to the failure behaviour of the turbines. An...

Audi Duo demonstration project: Environmental comparision and user survey

This paper describes the results and conclusions of a methodology for the assessment of environmental performance. This methodology was applied to a demonstration project conducted in the Netherlands with 10 Audi Duo parallel hybrid vehicles. During the course of the project, the vehicles were driven by a wide range of users and user groups. By...

Het Audi Duo concept in de praktijk: milieuprestaties en de kansen en belemmeringen voor marktintroductie, bepaald in het Demonstratieproject Audi Duo

This report describes the methodology and results for an assessment of environmental performance of a parallel hybrid vehicle, as well as an investigation into user experiences that may promote or hinder market introduction of this type of car. A parallel hybrid vehicle is powered either by a combustion engine or by an electric engine. For the...

Life-cycle analysis and optimisation of solar home systems: interim report over 1999 of ENGINE project 74513

This report describes the activities and outcomes of the first six monthsof the three-year ENGINE project Life-Cycle Analysis and Optimisation of Solar Home Systems (project number: 74513). The whole project is divided into four main activities that cover different perspectives of the use of solar PV equipment by households: monitoring of solar...

Emperical validation of team training ID-Guidelines

With respect to team training, traditional instructional design (ID) guidelines, mainly aimed at training at the individual level, seem to be insufficient given the different nature and characteristics of teams and team performance. In order to provide adequate support, guidelines have been developed supporting the analysis of team tasks, and...

Bias-free procedure for the measurement of the minimum resolvable temperature difference and minimum resolvable contrast

MRTD (Minimum Resolvable Temperature Difference) The characterization of electro-optical system performance by means of the standard minimum resolvable temperature difference (MRTD) or the minimum resolvable contrast (MRC) has a number of serious disadvantages. One of the problems is that they depend on the subjective decision criterion of the...

Semi-continuous high speed gas analysis of generated vapors of chemical warfare agents

A method is presented for the continuous analysis of generated vapors of the nerve agents soman and satin and the blistering agent sulfur mustard. By using a gas sampling valve and a very short (15 cm) column connected to an on-column injector with a 'standard length' column, the system can either be calibrated or used for performing high speed...

Energiegebruik elektrische `VW Caravelle`: verwerking en analyse van meetgegevens uit de praktijkproef

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Measuring road user behavior with an instrumented car and an outside-the-vehicle video observation technique

The limitations of human information processing capabilities are apparent in modern road traffic. Research methods for studying road user behavior range from unobtrusive observations of actual traffic to highly controlled laboratory experiments. Often the incompatibility between controllability and validity makes the choice of a suitable method...