Search results for " Error."
showing 10 items of 1034 documents
Fast adaptive frame preprocessing for 3D reconstruction
2015
Abstract: This paper presents a new online preprocessing strategy to detect and discard ongoing bad frames in video sequences. These include frames where an accurate localization between corresponding points is difficult, such as for blurred frames, or which do not provide relevant information with respect to the previous frames in terms of texture, image contrast and non-flat areas. Unlike keyframe selectors and deblurring methods, the proposed approach is a fast preprocessing working on a simple gradient statistic, that does not require to compute complex time-consuming image processing, such as the computation of image feature keypoints, previous poses and 3D structure, or to know a prio…
A Novel Expert System for Non-Invasive Liver Iron Overload Estimation in Thalassemic Patients
2014
Expert Systems can integrate logic based often on computational intelligence methods and they are used in complex problem solving. In this work an Expert System for classifying liver iron concentration in thalassemic patients is presented. In this work, an ANN is used to validate the output of the L.I.O.MO.T (Liver Iron Overload Monitoring in Thalassemia) method against the output of the state-of-the-art method based on MRI T2 assessment for liver iron concentration. The model has been validated with a dataset of 200 samples. The experimental Mean Squared Error results and Correlation show interesting performances. The proposed algorithm has been developed as a plug in for OsiriX Dicom View…
Is There Anything New to Say About SIFT Matching?
2020
SIFT is a classical hand-crafted, histogram-based descriptor that has deeply influenced research on image matching for more than a decade. In this paper, a critical review of the aspects that affect SIFT matching performance is carried out, and novel descriptor design strategies are introduced and individually evaluated. These encompass quantization, binarization and hierarchical cascade filtering as means to reduce data storage and increase matching efficiency, with no significant loss of accuracy. An original contextual matching strategy based on a symmetrical variant of the usual nearest-neighbor ratio is discussed as well, that can increase the discriminative power of any descriptor. Th…
"Ingiustizia formale" della custodia preventiva e "causa sinergica": le Sezioni Unite contemperano il diritto all'equa riparazione con la condotta
2011
Le Sezioni unite, in nome della natura solidaristica della riparazione per l'ingiusta detenzione, hanno ritenuto di aderire all'indirizzo che omologa le fattispecie previste dai commi 1 e 2 dell'art. 314 c.p.p. quanto alla operatività, ai fini del riconoscimento del diritto all'equo ristoro, della condizione ostativa della condotta dolosa o gravemente colposa del soggetto passivo del provvedimento coercitivo. Resta estranea, tuttavia, una sola ipotesi: quella della obiettiva ingiustizia della custodia cautelare accertata ex ante con decisione irrevocabile.
Fautes musicales et fautes textuelles dans les lais lyriques transmis par les chansonniers du Roi (M) et de Noailles (T)
2020
In this contribution we shall present some anomalies in the musical notation of the anonymous lyric lais transmitted by French chansonniers M and T (i.e. Kievrefoil, Markiol and Nompar), which share the same source, and to which a recently discovered chansonnier fragment (Bo) can be added. The plural attestation of these heterostrophic texts allows to nuance the strict notion of musical error, advocated by John H. Marshall for this very corpus. Finally, we discuss an interesting case (Nompar, str. X) where musical notation can effectively help the reconstruction of a text corrupted in both witnesses.
Testi arabi di Sicilia. Un esempio di disputa linguistica
2021
Il mio contributo si propone di illustrare un testo esemplare dei rapporti culturali tra la Sicilia e la civiltà islamica. Il testo si intitola Taṯqīf al-lisān wa talqīḥ al-ǧanān di Abū Ḥafṣ ῾Umar Ibn Ḫalaf Ibn Makkī al-Ḥamīrī al-Māzirī al-Ṣiqillī, grammatico e linguista ed è un esempio della lingua araba parlata in Sicilia nel X secolo , quando l'isola era un emirato sotto il dominio islamico. Il Taṯqīf al-lisān, composto da cinquanta capitoli, il trattato elenca gli errori grammaticali commessi dai siciliani sia persone comuni (al-'amma) che dotti (al-muḫaṣṣiṣūn). Ogni errore elencato è seguito dalla sua forma corretta. Il grammatico classifica gli errori secondo alcune categorie: paradig…
L'Informatione del pestifero et contagioso morbo ... nella visione storica ed etica.
2012
Il saggio introduttivo all'opera di G. F. Ingrassia sulla peste di Palermo del 1575 si propone di analizzare il rapporto medico paziente di quella epoca, le credenze sulle modalità del contagio della peste, le concezioni di bene e di male, le nuove conoscenze sulla astronomia. Il clima di terrore per la presenza dell'Inquisizione sollecita una riflessione, tutt'ora attuale sui rapporti tra medicina e religione. Ma la presenza del protomedico nella Deputazione della città e il contatto con i governanti ha sollecitato una riflessione su medicina e politica. La peste ha portato tanta paura, la nuova padrona dei tempi attuali per l'esercizio medico. Il saggio si chiude con una riflessione sull'…
eNOS Activation by HDL Is Impaired in Genetic CETP Deficiency.
2014
Mutations in the CETP gene resulting in defective CETP activity have been shown to cause remarkable elevations of plasma HDL-C levels, with the accumulation in plasma of large, buoyant HDL particles enriched in apolipoprotein E. Genetic CETP deficiency thus represents a unique tool to evaluate how structural alterations of HDL impact on HDL atheroprotective functions. Aim of the present study was to assess the ability of HDL obtained from CETP-deficient subjects to protect endothelial cells from the development of endothelial dysfunction. HDL isolated from one homozygous and seven heterozygous carriers of CETP null mutations were evaluated for their ability to down-regulate cytokine-induced…
WEIGHTS AND IMPUTATIONS
2019
This chapter provides a description of the weighting and imputation strategies used to address problems of unit nonresponse, sample attrition and item nonresponse in the seventh wave of SHARE.