4 documents found, page 1 of 1
Osteoporosis screening using machine learning and electromagnetic waves
Albuquerque, Gabriela A.; Carvalho, Dionísio D. A.; Cruz, Agnaldo S.; Santos, João P. Q.; Machado, Guilherme M.; Gendriz, Ignácio S.Osteoporosis is a disease characterized by impairment of bone microarchitecture that causes high socioeconomic impacts in the world because of fractures and hospitalizations. Although dual-energy X-ray absorptiometry (DXA) is the gold standard for diagnosing the disease, access to DXA in developing countries is still limited due to its high cost, being present only in specialized hospitals. In this paper, we an...
Removing artefacts and periodically retraining improve performance of neural ne...
Lopes, Fábio; Leal, Adriana; Pinto, Mauro F.; Dourado, António; Schulze-Bonhage, Andreas; Dümpelmann, Matthias; Teixeira, César A. D.The development of seizure prediction models is often based on long-term scalp electroencephalograms (EEGs) since they capture brain electrical activity, are non-invasive, and come at a relatively low-cost. However, they suffer from major shortcomings. First, long-term EEG is usually highly contaminated with artefacts. Second, changes in the EEG signal over long intervals, known as concept drift, are often negl...
Unsupervised EEG preictal interval identification in patients with drug-resista...
Leal, Adriana; Curty, Juliana; Lopes, Fábio; Pinto, Mauro F.; Oliveira, Ana; Sales, Francisco; Bianchi, Anna M; Ruano, Maria G; Dourado, AntónioTypical seizure prediction models aim at discriminating interictal brain activity from pre-seizure electrographic patterns. Given the lack of a preictal clinical definition, a fixed interval is widely used to develop these models. Recent studies reporting preictal interval selection among a range of fixed intervals show inter- and intra-patient preictal interval variability, possibly reflecting the heterogeneit...
Ocorrência de Cephalonomia stephanoderis Betrem (Hymenoptera: Bethylidae) em ca...
Souza, Moisés S. de; Teixeira, César A. D.; Azevedo, Celso Oliveira; Costa, Valmir Antonio; Costa, José Nilton MedeirosSubmitted by Patricia Barros (patricia.barros@ufes.br) on 2011-02-03T20:45:08Z No. of bitstreams: 2 31339.pdf: 119203 bytes, checksum: 4c348509fe2219675b4b0cf88f55ab2b (MD5) license_rdf: 21504 bytes, checksum: cfe16b28a928230b24b965de15e8a5ff (MD5); Approved for entry into archive by Patricia Barros(patricia.barros@ufes.br) on 2011-02-09T20:35:56Z (GMT) No. of bitstreams: 2 31339.pdf: 119203 bytes, checksum: 4c...