Succession in harvestman (Opiliones) communities within an abandoned sand quarry in Belgium

Sand mining strongly alters the existing landscape, transforming an area into a mosaic of native (sand deposits) and foreign soils, strongly influencing biotic development. The method of restoration of such excavated areas is often debated: natural succession or active restoration. We investigated how natural succession shapes harvestman communities, as part of the soil-dwelling community. We sampled harvestmen over a continuous period of 14 months in 25 plots in an abandoned sand quarry in Belgium using pitfall traps. We found significant increases in harvestman activity-density, species richness and diversity with time since abandonment of the various sections of the quarry. After about 15 years, a drastic change in species composition was observed with the establishment of forest species that more strongly depend on humid conditions to complete their life cycle. Colonisation of harvestmen closely followed vegetation succession despite their limited mobility. We argue that natural succession could be a good management tool for restoring harvestman communities as well as those of other soil-dwelling invertebrates in abandoned sand quarries

Ethics and engineering design.

Engineering ethics and science and technology studies (STS) have until now developed as separate enterprises. The authors argue that they can learn a lot from each other. STS insights can help make engineering ethics open the black box of technology and help discern ethical issues in engineering design. Engineering ethics, on the other hand, might help STS to overcome its normative sterility. The contributions in this special issue show in various ways how the gap between STS and engineering ethics might be overcome. In this editorial introduction, the authors discuss the various contributions briefly and delve into the way the various authors conceptualize the engineering design process and the consequences of those conceptualizations for what ethical issues become visible. They also discuss the implications for the responsibility of engineers for technological development

Samenwerking van huisartsen en apothekers

Tussen huisartsen en openbare apothekers bestaat een direkte wederzijdse professionele relatie doordat zij een gedeelde verantwoordelijkheid hebben voor de farmacotherapie van de patiënt. Door de nieuwe ontwikkelingen in de farmacotherapie zijn de mogelijkheden alsook de bijwerkingen en interacties toegenomen. De farmacotherapie is een van de belangrijkste oorzaken van iatrogene ziekte. Inzicht in elkaars taak en werkwijze t.a.v. farmacotherapie lijkt dan ook het minste wat mag worden verwacht van huisarts en apotheker. Dit onderzoek beschrijft de mogelijkheden en resultaten van jarenlang overleg tussen huisartsen en apothekers in Rotterdam-West . De werkwijze van de individuele deelnemer zal, om privacy redenen, niet beschreven worden

Corporate Governance and Acquisitions: Acquirer Wealth Effects in the Netherlands

We examine 865 acquisitions by Dutch industrial firms over the period 1993–2004. Theoretical work based on principal–agent problems predicts that managers of exchange-listed corporations may pursue acquisitions even when these do not add value for the shareholders. Corporate governance structures serve to constrain managers in their acquisition activity. In this chapter we measure the shareholder wealth effects of acquisitions and the factors that determine these wealth effects, including the governance characteristics of corporations. Firms in the Netherlands are interesting from the perspective of corporate governance, because the managerial board has a relatively strong position vis-à-vis shareholders. Several takeover defenses commonly used in the Netherlands not only limit shareholder influence during takeover battles, but also in absence of such fights. On the other hand, ownership is relatively concentrated, which may provide shareholders with the incentives and power to monitor the management. The average abnormal stock return following acquisition announcements is 1.1%, which is a significant positive effect. There is only a significant negative impact of the so-called structured regime, a situation where several shareholder rights are delegated to the supervisory board. This result suggests that governance improves acquisition decisions.The Netherlands;Corporate governance;Event study;Mergers & acquisitions

Towards a responsible agenda for academic literacy development: considerations that will benefit students and society

The transition from secondary to higher education (HE) requires a change of cultural mindset (cf. Darlaston-Jones et al., 2003; Leki, 2006). It is widely accepted that the academic performance and motivation of first year students to stay in HE depend, among others, on how well they integrate into the university environment (Brinkworth et al., 2009). Academic integration or acculturation takes different forms. The premise of this article is that students have to learn to engage with academic discourse, i.e., they must acquire the community’s communicative currency, defined as different kinds of language used to reflect the community’s current norms, practices, values and expectations (cf., among others, Duff, 2010; Gee, 1998, 2000; Hyland, 2009). As reflective and responsible practitioners we therefore need to outline a critical agenda for academic acculturation by reviewing the debate on the nature of literacy and,  particularly, by discussing similarities and differences in epistemology and approaches to literacy. Such an agenda will have to recognise insights gained from, in particular, the New Literacy Studies (Street, 1998, 2004) and the Academic Literacies movement (Lea & Street, 1998; Lillis & Scott, 2007), but it will also become enriched by a linguistic perspective (Biber, 2006; Blanton, 1994; Bachman & Palmer, 1996; Halliday, 1978, 1985, 1993, 1996, 2002; Hyland, 2009). In developing a template for the agenda we accordingly acknowledge the theoretical defensibility and the feasibility of different approaches to academic acculturation.Keywords: academic literacy development, academic discourse, academic  acculturation or integration, higher educatio