Nevoid basal cell carcinoma syndrome (Gorlin syndrome)

Nevoid basal cell carcinoma syndrome (NBCCS), also known as Gorlin syndrome, is a hereditary condition characterized by a wide range of developmental abnormalities and a predisposition to neoplasms

The biology of seamounts: 25 years on

Seamounts are one of the major biomes of the global ocean. The last 25 years of research has seen considerable advances in the understanding of these ecosystems. The interactions between seamounts and steady and variable flows have now been characterised providing a better mechanistic understanding of processes influencing biology. Processes leading to upwelling, including Taylor column formation and tidal rectification, have now been defined as well as those leading to draw down of organic matter from the ocean surface to seamount summit and flanks. There is also an improved understanding of the interactions between seamounts, zooplankton and micronekton communities especially with respect to increased predation pressure in the vicinity of seamounts. Evidence has accumulated of the role of seamounts as hot spots for ocean predators including large pelagic fish, sharks, pinnipeds, cetaceans and seabirds. The complexity of benthic communities associated with seamounts is high and drivers of biodiversity are now being resolved. Claims of high endemism resulting from isolation of seamounts as islands of habitat and speciation have not been supported. However, for species characterised by low dispersal capability, such as some groups of benthic sessile or low-mobility invertebrates, low connectivity between seamount populations has been found with evidence of endemism at a local level. Threats to seamounts have increased in the last 25 years and include overfishing, destructive fishing, marine litter, direct and indirect impacts of climate change and potentially marine mining in the near future. Issues around these threats and their management are discussed

Organizational learning via expatriate managers: Collective myopia as blocking mechanism

Qualitative case studies of two Japanese multinational department stores in Hong Kong are used to illustrate possible blocking mechanisms and collective myopia that hinder Japanese expatriate managers in acquiring double-loop organizational learning in their international assignments. Four major blocking mechanisms were identified - parent company community spirit, dozoku inhabitants, parent company\u27s translators and desire for normality. These blocking mechanisms were related to the Japanese head office\u27s culture, ideology and desire to control. They inhibited the expatriates from challenging established practices, procedures and norms, prevented them from becoming knowledgeable human agents, and hindered them from forming reflexivity. The expatriates, as a result, failed to learn from their international assignments. A conceptual model for expatriate learning and blocking mechanisms is drawn from the case examples, and implications for improving expatriate management to strengthen organizational learning are discussed. Copyright © 2005 SAGE Publications