Measuring the security culture in organizations: a systematic overview of existing tools

There has been an increase in research into the security culture in organizations in recent years. This growing interest has been accompanied by the development of tools to measure the level of security culture in order to identify potential threats and formulate solutions. This article provides a systematic overview of the existing tools. A...

Hoogwaterpeilmeetopstelling: Afwijking in gemeten waterstanden door stromingseffecten

On transforming accelerometer data to angular rate

The representation of the acceleration field on a rigid body contains as parameters its angular rate and acceleration vectors plus the acceleration vector at a single point of the body. A linear accelerometer measures a local component of the field. From the response of different accelerometers, three quadratic forms in the angular rate of the...

Instruments used in the research on Cohesive Sediments

A research program was started to study the behaviour of cohesive sediments at the Delft University of Technology in 1989. As part of this project a well-provided physico-chemicallaboratory was built within the Hydromechanics Laboratory and adequate instrumentation was purchased. These new instruments and other instruments already present in the...

Telescience pilot experiment results using telePODI: Final report

The Prototype Optical Diagnostic Instrument (PODI) has been extended to Teleoperated PODI (TelePODI) to allow for the study of telescience and image processing for microgee related instrumentation. TelePODI has been integrated in the Telescience Test Bed, phase I, at ESTEC to simulate remote control. Telescience pilot experiments have been...

A simple and low cost system to measure delay times in pneumatic systems

It is often necessary to correct for delay times in the units of a measurement channel, especially in the case of flight tests. In a pressure measurement channel the sensing orifice is connected to the transducer by a pressure line which may be several meters in length. In this case the pneumatic delay time might well be the major contribution...

A measurement system for production flight tests of new aircraft

Today there is an increasing pressure on the fast delivery of a newly manufactured aircraft and on the strict guarding of its performance figures. It is therefore essential to reduce the necessary time between completion of the new aircraft and the moment of deliverance to an airline. This means that production flight testing time must be...

Boundary-layer effects in unsteady pressure measurements with tubes

An experimental investigation revealed that the d5mamic response of a given pressure tube depends not only on the mean local pressure and the frequency, but also on the pressure amplitude and the boundary-layer at the tube entrance. By analyzing the flow at the entrance of the tube, the parameters are determined, which possibly play a role in...

Meetfouten bij intensiteitsmetingen, toegepast op de bepaling van geluidsisolatie

A study has been carried out on the errors, connected with acoustic intensity measurements, measuring the sound transmission loss of panels with the intensity method. The magnitude of some measuring errors can be estimated from available publications. From measurements in a standing wave tube and on a flat plate the measuring errors have been...

Development of silt measuring methods: Electronic signal processing, part I - a detection method for HF-bursts

A preliminary study of a fluid science laboratory for space station (Columbus). Final report. Part 4. Executive summary

The report presents a design study, within a specified envelope of resources, of laboratory for scientific research on fluid material in a space station, A survey of the scientific background of mlcrogravity experiments identifies candidate investigations. A structured description of available facilities, or earlier design studies, provides a...

Feasibility demonstration of a sensor for High-Quality two-phase flow

Two-phase flow heat transport systems for the Columbus Space Platform and the Space Station are expected to incorporate systems to control the liquid flow rates into evaporative cold plates. Candidate components for such a control system are sensors monitoring the (very high) mixture quality at the cold plate exit lines, control algorithms and...

Onderzoek meetmethodes kantelgoot

Fluid physics instrumentation study: final report: part IV: executive summary, conclusions and recommendations

In the introduction of this Part the original objectives of the FPIS are recalled and the study strategy is indicated. Next chapters provide the logic and intermediate results as described in FPIS Final Report Part 1 System Aspects, Part 2 Detailed Design and Part 3 Breadboarding and Test Results. The final sections deal with important...

Natuurmetingen aan de kust te Egmond: Plan voor activiteiten in 1982

Buitenmeting spuisluis Haringvliet (deel 4): Evaluatieverslag

Transducer selection

The transducer selection process as applied to the F29 digital data-acquisition system is discussed in detail. The selection procedure consists of interviews of the users of the system, specification of the transducer part of the data-acquisition system, transducer selection from manufacturer data, evaluation tests, integration into the data...

Duwvaartsluizen in de Philipsdam: Toepasbaarheid geleidendheidsmeetinstrument Rijkswaterstaat Hydro-instrumentatie