77 research outputs found
ASO Author Reflections: Multimodality Treatment in Esophageal Signet Ring Cell Adenocarcinoma
Performance-Efficiency Comparisons of Channel Attention Modules for ResNets
Attention modules can be added to neural network architectures to improve performance. This work presents an extensive comparison between several efficient attention modules for image classification and object detection, in addition to proposing a novel Attention Bias module with lower computational overhead. All measured attention modules have been efficiently re-implemented, which allows an objective comparison and evaluation of the relationship between accuracy and inference time. Our measurements show that single-image inference time increases far more (5–50%) than the increase in FLOPs suggests (0.2–3%) for a limited gain in accuracy, making computation cost an important selection criterion. Despite this increase in inference time, adding an attention module can outperform a deeper baseline ResNet in both speed and accuracy. Finally, we investigate the potential of adding attention modules to pretrained networks and show that fine-tuning is possible and superior to training from scratch. The choice of the best attention module strongly depends on the specific ResNet architecture, input resolution, batch size and inference framework.</p
Records of a new alien polychaete worm species, Marphysa sanguinea (Montagu, 1815) (Eunicidae) in the Eastern Scheldt, the Netherlands
ASO Author Reflections: Multimodality Treatment in Esophageal Signet Ring Cell Adenocarcinoma
Geographic patterns of biodiversity in European coastal marine benthos
Within the COST action EMBOS (European Marine Biodiversity Observatory System) the degree and variation
of the diversity and densities of soft-bottom communities from the lower intertidal or the shallow subtidal
was measured at twenty-eight marine sites along the European coastline (Baltic, Atlantic, Mediterranean)
using jointly-agreed and harmonised protocols, tools and indicators. The hypothesis tested was that the
diversity for all taxonomic groups would decrease with increasing latitude. The EMBOS system delivered
accurate and comparable data on the diversity and densities of the soft sediment macrozoobenthic
community over a large-scale gradient along the European coastline. In contrast to general biogeographic
theory, species diversity showed no linear relationship with latitude, yet a bell-shaped relation was found.
The diversity and densities of benthos were mostly positively correlated with environmental factors such as
temperature, salinity, mud and organic matter content in sediment, or wave height, and related with
location characteristics such as system type (lagoons, estuaries, open coast) or stratum (intertidal, subtidal).
For some relationships, a maximum (e.g. temperature from 15 to 20 °C; mud content of sediment around 40
%) or bimodal curve (e.g. salinity) was found. In lagoons the densities were twice higher than in other
locations, and at open coasts the diversity was much lower than in other locations. We conclude that
latitudinal trends and regional differences in diversity and densities are strongly influenced by, i.e. merely
the result of, particular sets and ranges of environmental factors and location characteristics specific to
certain areas, such as the Baltic, with typical salinity clines (favouring insects) and the Mediterranean, with
higher temperatures (favouring crustaceans). Therefore, eventual trends with latitude are primarily indirect
and so can be overcome by local variation of environmental factors
Clinical impact of routine response assessment after preoperative chemotherapy in patients with gastric cancer
Ecosystem services in European protected areas: Ambiguity in the views of scientists and managers?
Protected Areas are a key component of nature conservation. They can play an important role in counterbalancing the impacts of ecosystem degradation. For an optimal protection of a Protected Area it is essential to account for the variables underlying the major Ecosystem Services an area delivers, and the threats upon them. Here we show that the perception of these important variables differs markedly between scientists and managers of Protected Areas in mountains and transitional waters. Scientists emphasise variables of abiotic and biotic nature, whereas managers highlight socio-economic, cultural and anthropogenic variables. This indicates fundamental differences in perception. To be able to better protect an area it would be advisable to bring the perception of scientists and managers closer together. Intensified and harmonised communication across disciplinary and professional boundaries will be needed to implement and improve Ecosystem Service oriented management strategies in current and future Protected Areas.This study was done in the frame of the EcoPotential project. This project has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No 641762
Treatment of anastomotic leak after oesophagectomy for oesophageal cancer:large, collaborative, observational TENTACLE cohort study
Background: Anastomotic leak is a severe complication after oesophagectomy. Anastomotic leak has diverse clinical manifestations and the optimal treatment strategy is unknown. The aim of this study was to assess the efficacy of treatment strategies for different manifestations of anastomotic leak after oesophagectomy. Methods: A retrospective cohort study was performed in 71 centres worldwide and included patients with anastomotic leak after oesophagectomy (2011-2019). Different primary treatment strategies were compared for three different anastomotic leak manifestations: interventional versus supportive-only treatment for local manifestations (that is no intrathoracic collections; well perfused conduit); drainage and defect closure versus drainage only for intrathoracic manifestations; and oesophageal diversion versus continuity-preserving treatment for conduit ischaemia/necrosis. The primary outcome was 90-day mortality. Propensity score matching was performed to adjust for confounders. Results: Of 1508 patients with anastomotic leak, 28.2 per cent (425 patients) had local manifestations, 36.3 per cent (548 patients) had intrathoracic manifestations, 9.6 per cent (145 patients) had conduit ischaemia/necrosis, 17.5 per cent (264 patients) were allocated after multiple imputation, and 8.4 per cent (126 patients) were excluded. After propensity score matching, no statistically significant differences in 90-day mortality were found regarding interventional versus supportive-only treatment for local manifestations (risk difference 3.2 per cent, 95 per cent c.i. -1.8 to 8.2 per cent), drainage and defect closure versus drainage only for intrathoracic manifestations (risk difference 5.8 per cent, 95 per cent c.i. -1.2 to 12.8 per cent), and oesophageal diversion versus continuity-preserving treatment for conduit ischaemia/necrosis (risk difference 0.1 per cent, 95 per cent c.i. -21.4 to 1.6 per cent). In general, less morbidity was found after less extensive primary treatment strategies. Conclusion: Less extensive primary treatment of anastomotic leak was associated with less morbidity. A less extensive primary treatment approach may potentially be considered for anastomotic leak. Future studies are needed to confirm current findings and guide optimal treatment of anastomotic leak after oesophagectomy.</p
Habitatrichtlijnrapportage 2019: Annex D Habitattypen : Achtergronddocument
This document describes the concepts, data and methods used in the 2019 report (under Article 17 of the Habitats Directive) on the conservation status of habitat types for the parameters range, area, structure and functions, and future prospects. The ranges of nearly all habitat types have not changed. No reliable, updated data on area were available for most habitat types. The methodology for assessing structure and functions has been thoroughly revised to accommodate long-term monitoring data and meet the new reporting formats. The European Commission has also introduced a new method for assessing future prospects. The report presents the results and indicates where the methods and data can be improved
- …