What employees do today because of their experience yesterday: Previous exposure to yellow:number aspects as a cause for SPAD incidents

When a train passes a red aspect, this is called a Signal Passed at Danger event or SPAD. Sometimes it is easy to identify the SPAD cause but in other cases it is unclear why the incident occurred, especially if the system operated as usual and the train driver was trained and experienced just like his or her colleagues. In previous research,...

Getting the Perpetrator Incorporated and Prioritized in Homicide Investigations: The Development and Evaluation of a Case-Specific Element Library (C-SEL)

Homicide investigators in the digital era have access to an increasing amount of data and the processing of all persons of interest and pieces of evidence has become nearly impossible. This paper describes the development and evaluation of a case-specific element library (C-SEL) that can be used to incorporate and prioritize persons of interest...

How cognitive biases influence the data verification of safety indicators: A case study in rail

The field of safety and incident prevention is becoming more and more data based. Data can help support decision making for a more productive and safer work environment, but only if the data can be, is and should be trusted. Especially with the advance of more data collection of varying quality, checking and judging the data is an increasingly...

Kwantificering met Kwantitatieve Risico Analyse: Optimalisering van het inschatten van de faalkans voor de menselijke component

Veel bedrijven in met name de petrochemische industrie zijn er de afgelopen jaren in geslaagd het aantal ongevallen sterk terug te dringen. Een van de middelen die is gebruikt om deze verbetering te bewerkstelligen, is de zogenaamde Kwantitatieve Risico Analyse (QRA). Een QRA is een instrument om de risico's voor een bepaalde activiteit te...

Current sharing between diode clamps of polar capacitor bank

The layout of a capacitor bank with clamping diodes is investigated based on an experimental 5.5-kJ energy storage unit for pulsed power applications. While the current sharing between parallel-connected capacitors is good, it is not the case with parallel-connected clamping diodes. Despite a very-low-inductance busbar and attention to...

An acceleration illusion caused by underestimation of stimulus velocity during pursuit eye movements: Aubert-Fleischl revisted

When the eyes pursue a fixation point that sweeps across a moving background pattern, and the fixation point is suddenly made to stop, the ongoing motion of the background pattern seems to accelerate to a higher velocity. Experiment I showed that this acceleration illusion is not caused by the sudden change in (i) the relative velocity between...