32 documents found, page 1 of 4

Multispectral vineyard segmentation: A deep learning comparison study

Digital agriculture has evolved significantly over the last few years due to the technological developments in automation and computational intelligence applied to the agricultural sector, including vineyards which are a relevant crop in the Mediterranean region. In this work, a study is presented of semantic segmentation for vine detection in real-world vineyards by exploring state-of-the-art deep segmentation...

Boosting the optical properties of polylactic acid/ lanthanide-based metal-orga...

Luminescent lanthanide metal-organic frameworks (LnMOF) are gathering much interest in the scientific community due to their exceptional optical properties, which have the potential to revolutionize several application fields, including anti-counterfeiting. The traceability of the original products is an ever- growing demand for producers and end-users to verify the authenticity of produced goods. Following this ...

Caracterização de grupos de doentes pelas barreiras ao cumprimento da terapêuti...

Addressing the class imbalance problem in the automatic image classification of...

Unmanned Aerial Systems (UAS) has been recently used for mapping marine litter on beach-dune environment. Machine learning algorithms have been applied on UAS-derived images and orthophotos for automated marine litter items detection. As sand and vegetation are much predominant on the orthophoto, marine litter items constitute a small set of data, thus a class much less represented on the image scene. This comm...

Self-assembled diphenylalanine peptide microtubes covered by reduced graphene o...

Rubella antibodies in cord blood sera in Portugal: association with maternal ag...

This study evaluated the impact of maternal vaccination against rubella on the levels of specific rubella IgG (rIgG) in 198 newborn cord sera samples. Detailed maternal vaccination data were available. Specific rIgG was measured using a commercial enzyme immunoassay. Most mothers (78.8%) had been vaccinated against rubella at least once in their lives. In 15 (7.6%) cord sera samples, the concentration of specif...

Anaesthesia - related fears - a cross - sectional survey among the portuguese p...

Introduction: Patients experience preoperative anxiety. The objective of this study was to assess patients’ fears concerning anaesthesia and evaluate possible associations with sociodemographic background and previous anaesthesia. Methods: A survey was filled preoperatively, for 6 months, including anaesthesia-related fears, sociodemographic data, previous anaesthesia and surgery, current surgical and anaesthet...

Persistence of rubella and mumps antibodies, following changes in the recommend...

In Portugal, the recommended age for the second dose of MMR (MMR2) was changed from 10-13 years to 5-6 years for those born in 1994 and afterwards. This study aimed to assess if MMR schedule and time elapsed from the last dose are associated with the concentration of rubella and mumps IgG antibodies. Three Portuguese birth cohorts (convenience samples) were selected for this study (66, 59 and 41 participants bo...

Prevalence of hepatitis E virus antibodies in workers occupationally exposed to...

The concept of zoonotic hepatitis E in industrialized countries has emerged with the discovery of swine strains of hepatitis E virus (HEV) genotype 3, closely related to human HEV. Different routes of zoonotic HEV transmission have been recognized, including contact with infected pigs. Workers occupationally exposed to swine (WOES) have been considered a risk group for HEV infection, but contradictory results h...

A avaliação 360º e a comunicação das chefias: onde se cruzam?

A comunicação organizacional e a avaliação de desempenho podem constituir-se como práticas estratégicas muito importantes para o desenvolvimento profissional dos membros da organização e, consequentemente, para a eficácia organizacional. Nos últimos anos tem vindo a desenvolver-se um tipo de avaliação de desempenho específico designado por avaliação 360º. Este método avaliativo possibilita uma maior variedade d...