“The gift of failure: New approaches to analyzing and learning from events and near-misses.” Honoring the contributions of Bernhard Wilpert

This special issue presents papers from a workshop conducted by New Technologies and Work (NeTWork) to honor the memory of Bernhard Wilpert, the founder and organiser of NeTWork. The papers reflect the theme that undesirable incidents and events, serious and disturbing as they may be, are a “gift of failure.” In short, events offer an opportunity to learn about safe and unsafe operations, generate productive conversations across engaged stakeholders, and bring about beneficial changes to technology, organization, and mental models (understanding). Papers in the special issue are organised around three topics: the process of event analysis, the relationship between event analysis and organisational learning, and learning at multiple system levels. In this introduction we describe the workshop, summarize the contributions of Bernhard Wilpert, suggest three themes that emerged from the workshop, and offer our thoughts about the future of event analysis and learning from events.     

Sexual cohabitation as mate-guarding in the leaf-curling spider Phonognatha graeffei Keyserling (Araneoidea, Araneae)

The leaf-curling spider Phonognatha graeffei incorporates a twisted leaf into the central hub of its orb-web that is used as a retreat. This species is unusual among orb-weaving spiders because males cohabit in the leaf retreat with both immature and mature females, mating with the former shortly after the female molts. Cohabitation appears to be a form of mate-guarding because cohabiting males respond agonistically to rival males that venture onto the web, and their behaviour depends upon the reproductive status of the female; males defending immature females are more aggressive than those defending virgin, adult females. Males copulate with previously mated females for significantly longer than with virgin females. Females may cannibalise cohabiting males, which occurs independently of whether the female has been deprived of food. Females that cannibalise a single male do not have a higher fecundity than non-cannibalistic females. Received: 2 February 1996 / Accepted after revision: 27 October 1996     

Formal mentoring versus supervisor and coworker relationships: differences in perceptions and impact

Formal mentoring programs in two companies were examined regarding (1) the extent to which mentees and mentors agreed on the nature of the mentoring relationships and (2) the extent to which dimensions of mentoring relationships were related to outcomes for the mentees, compared with the extent to which dimensions of supervisory and coworker relationships were related to the same outcomes: job satisfaction, organizational commitment, and turnover intentions. Mentors were at least two hierarchical levels above the mentee, and both were part of the companyies' formal mentoring program. Sixty‐one pairs of mentors and mentees participated. Overall, there was little agreement between mentees and mentors regarding the nature of the mentoring relationship. Furthermore, the mentoring relationship was not related to mentee outcomes, while supervisory and coworker relationships were. It is suggested that, if one desires to affect job satisfaction, turnover intentions, and organizational commitment, mentoring functions may be best performed by supervisors and coworkers rather than assigned formal mentors from higher up in the organizational hierarchy. Copyright © 2003 John Wiley & Sons, Ltd.     

Photodynamic action of some sensitizers by photooxidation of luminol

We report the development of a novel simple experimental method which allows the comparison of new photosensitizers based on their production of reactive oxygen species. A high-performance liquid chromatography (HPLC) assay permits the monitoring of several substances (sensitizer, reactant and oxidized end product) simultaneously on a single chromatogram. Photoreactions were monitored throughout their course by the HPLC assay surveying the sensitizers' efficiency of singlet oxygen production by the oxidative decomposition of luminol. Several photosensitizers were tested: Rose Bengal, Methylene Blue, Protoporphyrin IX, Photosan III, Photofrin, Hypericin and Pseudohypericin. Additionally, photoreactions were monitored by a standard pO₂ detection system. The measurements of the two detection methods were strongly correlated. Rose Bengal proved to be the most efficient photosensitizer, clearly decreasing the luminol concentration and causing a corresponding increase in aminophthalic acid. Our experiments show that when factors necessary for photochemical reactions are absent or are blocked (antioxidants), no reaction can be detected.     

Policy and planning in the dutch countryside: The role of regional innovation networks

This paper presents the results of a study on the functioning of regional innovation networks (RINs) in the Netherlands. RINs are designed to achieve sustainable and socially acceptable regional economic development. By focusing on inter-human processes, the study aimed to gain more and deeper insights into the nature, the workings, the potential and the limitations of RINs in processes of innovation. An important insight from the study concerns the role of governments in RINs. Although the intention of the central government was to experiment with a fully bottom-up process, all RINs were eager to involve the government at different levels, at different times and for different purposes.