568 research outputs found
Product launch performance in hi-tech SMEs: newness to the firm and the role of management controls
We investigate the impact of management control mechanisms on the success of new product launches in high-technology small- and medium-sized enterprises (SMEs). We argue that internal management controls will alleviate problems associated with product newness. Using survey data from 76 SMEs we find newness to the firm to be negatively related to product launch success, while the use of informal and formal controls have positive effects. Furthermore, informal controls within the SME moderate the negative relationship between newness and launch success. The results add to the debate on the impact of control mechanisms on innovative activities in SMEs
Unlocking RPA potential: understanding the use of Robotic Process Automation by finance employees
We examine the factors influencing the extent to which finance employees of an accounting and transactions unit utilize Robotic Process Automation (RPA) in a large industrial firm. We identify the challenges in motivating employees to request RPA support and to use robots. Employees are reluctant to seek RPA support from a dedicated support team when they see no benefits, doubt the quality, lack time, are not incentivized, or fear an impact on their jobs. On the other hand, users of RPA experience direct benefits in their daily work and are positive about the interaction with the RPA developers. Improving the use of RPA involves demonstrating how robots enhance employees’ job effectiveness, alleviating concerns about job loss
Turbidity, Waterfowl Herbivory, and Propagule Banks Shape Submerged Aquatic Vegetation in Ponds
The aquatic vegetation in nutrient-rich shallow lakes and ponds is structured by the interplay of multiple biotic and abiotic drivers. We tested the contribution of the macrophyte propagule bank and the delayed as well as direct impact of waterbirds on submerged aquatic vegetation in a peri-urban pond system. To clarify the functional hierarchy of predictor variables, effects of herbivorous waterfowl and propagule bank potential were ranked relative to environmental, phytoplankton, and zooplankton indicators. Two aspects of the aquatic vegetation – community composition and total pond-scale cover – were discriminated. Within vegetation communities, phytoplankton biovolume and waterfowl herbivory during summer were linked to low macrophyte abundance, whereas propagule density of angiosperms was positively associated with specific assemblages of submerged macrophytes. High algal biovolume and summer waterfowl grazing seemed to affect maximal pond-scale cover of submerged aquatic vegetation. The presence of waterfowl in cold and spring periods was unrelated to vegetation structure in the consecutive main growth season. In addition, availability of propagules in the sediment did not automatically prompt pond-wide vegetation cover (especially when overruled by high waterfowl densities), nor did it guarantee a position in the submerged macrophyte community. Nonetheless, propagule bank potential was related to the waterbody’s general ecological status, since turbid ponds exhibited impoverished propagule reserves compared to ponds residing in a clear, macrophyte-dominated state. Inadequate recruitment therefore represents a plausible bottleneck for macrophyte establishment. We conclude that phytoplankton-caused turbidity and high waterfowl biomass densities greatly restrict submerged macrophyte abundance. Propagule banks also participate in structuring submerged aquatic vegetation, though a stronger role is reserved for herbivorous waterfowl
Following the chain of command? How managers balance benefits and risks in granting autonomy to employees
We investigate how managers trade off the benefits of delegating authority to their employees with the risk of loss of control. Organizational economics theory identifies specific knowledge of subordinates and monitoring possibilities for the manager as determinants of delegation. Social learning theory predicts that when unit managers are themselves granted more authority, they will pass this on to their employees. This cascading of authority reduces the fear of loss of control associated with delegation. Using a survey among 215 unit managers in professional services firms, we find that managers delegate more authority to employees in their unit when those employees have more specific knowledge, when there are more exceptions in employee tasks, and when monitoring costs are lower. We also find support for the cascading effect: decentralization to the manager is positively related to autonomy granted to employees, while it moderates the effects of specific knowledge and monitoring costs
Report of a Pest Risk Analysis for Hydrocotyle ranunculoides
Hydrocotyle ranunculoides originates from the American continent and was introduced into the EPPO region as an ornamental plant for tropical aquaria and garden ponds, where it is still sold under its correct name, sometimes under other names (H. vulgaris, H. leucocephala, and H. natans which is a synonym of H. ranunculoides). The plant was first recorded as naturalised in the south-east of the UK in the 1980s (Newman, 2003). Naturalisation in the Netherlands and in Belgium was recorded in the last decade of the twentieth century (Baas & Duistermaat, 1999; Baas & Holverda, 1996; Krabben & Rotteveel, 2003; Verloove 2006, Invasive Species in Belgium Website). Deleterious impacts have been reported in these three countries. The species is also recorded in France, Ireland, Italy, Germany (see EPPO, 2009) but several EPPO countries are still free from H. ranunculoides and there are concerns that it may be able to enter and establish in further countries. This PRA assesses the risks of its further introduction into other EPPO countries and its current and predicted impact.
An initial EPPO PRA was performed and approved in 2005. After the proposal of listing this species in the Directive 2000/29, the European Food Safety Authority reviewed the initial PRA and made some comments. The initial PRA is therefore revised in the view of the EFSA comments and of information having become available after the initial PRA (EFSA, 2007)
PO-0935: Correcting diffusion weighted MR images for signal pile-up and distortions near gas pockets
Over the hills and far away: phylogeography and demographic migration history of a dispersal-restricted primrose (Primula vulgaris)
IntroductionQuaternary glaciations, in particular the last glacial maximum (LGM), have shaped the contemporary distribution of many species. In Europe, survival of temperate species during range contractions was mainly associated with refugia in Mediterranean peninsulas, allowing south to north recolonization. Additionally, the Ponto-Caspian refugium provided an east to west migration route.MethodsHere, we investigated genetic diversity and structure of the dispersal-restricted Primula vulgaris Huds., a temperate herb of supposed Caucasian origin, using 12 highly polymorphic nuclear microsatellite loci to trace the colonization of this species in three European regions. We studied 38 populations, namely an eastern mountainous region (Caucasus), a central region (Carpathian Mountains and Dinaric Alps) and a western lowland region (North European Plain). The role of an eastern refugium of the species was tested by performing Approximate Bayesian computation analyses to elucidate its demographic and phylogeographic history, detecting bottleneck and expansion events, and estimating effective (ancestral and current) population sizes and time of divergence.Results and discussionWe found the eastern and central regions featuring the highest allelic richness and genetic differentiation being strong between and within regions. Stepwise-like mutation processes (RST > FST), together with isolation-by-distance patterns, contributed to genetic differentiation. Demographic event models showed that P. vulgaris experienced bottlenecks as well as expansions across its range during the Quaternary glacial cycles, with the last expansion about 6,000, 4,000, and 2,000 generations ago for eastern, central, and western populations, respectively. The best supported origin model pointed to the Caucasus population being closest to an ancestral situation, and from where central and western populations diverged subsequently. Divergence time of the Caucasus populations from an ancestral lineage referred to the Upper Pleistocene (Middle Weichselian). Divergence of Carpathian populations, including a Lower Danube valley corridor, was estimated during and across the LGM (Late Weichselian), confirming central populations as potential secondary cryptic refugium. Western populations recently diverged during the Holocene, most probably in the Atlanticum phase (7,000–3,900 years ago). Within regions, genetic structure was also shaped by latitude, longitude, or altitudinal migration, and for western lowlands, by recent bottleneck and genetic drift processes
lessons: tupker\risselada:
This book is about the educational practice of two teachers of architecture, Max Risselada and Hans Tupker. They represent a new kind of teacher that came into being along with the wave of democracy that washed over the educational institutes in the late 60s and early 70s of the last century. Risselada’s and Tupker’s teaching is not the derivative of their architectural practice. On the contrary, they belong to the first generation of professional teachers. This new figure of the professional teacher is characterised on the one hand by an independent authority with regard to the professors and the governors, and on the other hand by the equal collaboration with students on organising and defining one’s own education
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