Publications by authors named "L S I Veiga"
Avalanche resistive switching is the fundamental process that triggers the sudden change of the electrical properties in solid-state devices under the action of intense electric fields. Despite its relevance for information processing, ultrafast electronics, neuromorphic devices, resistive memories and brain-inspired computation, the nature of the local stochastic fluctuations that drive the formation of metallic regions within the insulating state has remained hidden. Here, using operando X-ray nano-imaging, we have captured the origin of resistive switching in a VO-based device under working conditions.
View Article and Find Full Text PDFDermatophytoses are infectious skin diseases of public health importance because of their transmissibility and high prevalence, especially among children. This is the first study aiming to estimate and report the burden of dermatophytoses on school-age children on the island of Santiago in Cape Verde, an African country that is an archipelago. A total of 249 students attending the afternoon shift of three elementary schools in the city of Achada Igreja were examined.
View Article and Find Full Text PDFArticle Synopsis
- Neonates with symptomatic tetralogy of Fallot (sTOF) often require early surgical intervention, which can involve either staged repair (SR) or primary repair (PR), but both strategies expose them to low-dose ionizing radiation that may raise cancer risk.
- This study analyzed the cumulative radiation exposure and lifetime attributable risk (LAR) of cancer in sTOF patients who underwent either SR or PR, using data from 242 neonates across multiple centers.
- Results showed that SR resulted in significantly higher radiation exposure compared to PR and highlighted an increased LAR of cancer, particularly for females, emphasizing the need to consider radiation risk when choosing treatment options for this vulnerable group.*
Global pose refinement is a significant challenge within Simultaneous Localization and Mapping (SLAM) frameworks. For LIDAR-based SLAM systems, pose refinement is integral to correcting drift caused by the successive registration of 3D point clouds collected by the sensor. A divergence between the actual and calculated platform paths characterizes this error.
View Article and Find Full Text PDFPurpose: Trials demonstrating benefits of tamoxifen for women with ductal carcinoma in situ (DCIS) were published > 20 years ago; yet subsequent uptake of endocrine therapy was low. We estimated endocrine therapy initiation in women with DCIS between 2001 and 2018 in a community setting, reflecting more recent years of diagnosis than previous studies.
Methods: This retrospective cohort included adult females ≥ 20 years diagnosed with first primary DCIS between 2001 and 2018, followed through 2019, and enrolled in one of three U.