In this work, we propose an efficient way of web video annotation in soccer domain. To achieve this, it is necessary to enjoy different architectures of deep learning. We aim at realising a system of ...annotation able to recognise several events from information of the object that is the ball in our case, in order to fuse them as a part of actions in video. We propose to use Deep Neural Network (DNN) to detect ball and actions. However, Mask R-CNN can play a very important role for features extracted as an output using a training network on ImageNet dataset. The Mask R-CNN is chosen as a method using different CNN as backbone (convolutional Neural Network) ResNet50, ResNet101 and ResNet152, VGG16, VGG 19. We experimentally verify the effectiveness of the proposed method in the test phase.
ABSTRACT
Extreme high-frequency BL Lacs (EHBL) feature their synchrotron peak of the broad-band spectral energy distribution (SED) at νs ≥ 1017 Hz. The BL Lac object 1ES 2344+514 was included in the ...EHBL family because of its impressive shift of the synchrotron peak in 1996. During the following years, the source appeared to be in a low state without showing any extreme behaviours. In 2016 August, 1ES 2344+514 was detected with the ground-based γ-ray telescope FACT during a high γ-ray state, triggering multiwavelength (MWL) observations. We studied the MWL light curves of 1ES 2344+514 during the 2016 flaring state, using data from radio to very-high-energy (VHE) γ-rays taken with OVRO, KAIT, KVA, NOT, some telescopes of the GASP-WEBT collaboration at the Teide, Crimean, and St. Petersburg observatories, Swift-UVOT, Swift-XRT, Fermi-LAT, FACT, and MAGIC. With simultaneous observations of the flare, we built the broad-band SED and studied it in the framework of a leptonic and a hadronic model. The VHE γ-ray observations show a flux level of 55 per cent of the Crab Nebula flux above 300 GeV, similar to the historical maximum of 1995. The combination of MAGIC and Fermi-LAT spectra provides an unprecedented characterization of the inverse-Compton peak for this object during a flaring episode. The Γ index of the intrinsic spectrum in the VHE γ-ray band is 2.04 ± 0.12stat ± 0.15sys. We find the source in an extreme state with a shift of the position of the synchrotron peak to frequencies above or equal to 1018 Hz.
First of all, in this paper, we prove the convergence of the nabla h-sum to the Riemann–Liouville integral in the space of continuous functions and in some weighted spaces of continuous functions. ...The connection with time scales convergence is discussed. Second, the efficiency of this approximation is shown through some Cauchy fractional problems with singularity at the initial value. The fractional Brusselator system is solved as a practical case.
Bridge load limit monitoring is a major problem in the Philippines. Since this was not implemented strictly, the structural integrity of the bridges was affected hence it resulted to frequent ...maintenance, retrofitting of strucutral members and collapse. The integrity of the bridge continously decreases through time once the maximum load limit was experienced by the structure. Therefore, this study aims to emphasize the importance of traffic load monitoring in conducting structural health assessment of bridges aside from earthquake and mass loads. The 7.7% increase in the flexure stress of the bridge deck indicates that truck loading has a significant effect on the bridge. In addition for this, variation on the truck volume for peak hours and non peak hours will correlate to the reading of the smart sensor attached on the bridge for structural health monitoring.
We report our 8-year experience with the resurgence of acute rheumatic fever during the years 1985 through 1992. The records of 274 confirmed cases referred to Primary Children's Medical Center were ...reviewed. The clinical features including the presence of the Jones criteria, demographic data, preceding streptococcal infection, and the use of echocardiographic studies were tabulated and assessed. Patients came predominantly (84%) from middle-class families with access to medical care. Only 46 patients (17%) sought medical attention for a preceding sore throat. Carditis evident by auscultation was the dominant major manifestation in 68% of the cases. Echocardiography demonstrated mitral regurgitation that was not audible in 15 (47%) of 32 patients who had only polyarthritis at onset and in 30 (57%) of the 53 who had pure chorea. The incidence of acute rheumatic fever has been declining since the peak of the outbreak in 1985 but is continuing in the intermountain area at rates comparable to those of the 1960s.
To determine the yield of screening echocardiography in the evaluation of pediatric syncope.
All patients diagnosed with syncope from January 1993 to January 1999 were identified and their records ...were reviewed for age, weight, sex, year of presentation, personal and family history, physical examination, and cardiac diagnostic testing. Cardiac defects were identified by reviewing echocardiograms and reports.
The 480 patients (268 females) ranged in age from 1.5 to 18.0 years old and ranged in weight from 10.3 to 113.6 kg. Final diagnoses included noncardiac causes in 458, long QT syndrome in 14, arrhythmias in 6, and cardiomyopathy in 2. An abnormal history, physical examination, or electrocardiogram identified 21 of the 22 patients with a cardiac cause of syncope. Of the 322 (67%) echocardiograms performed, abnormalities were detected in 37. These abnormalities included 26 minor valve anomalies, 7 hemodynamically insignificant shunt lesions, 2 mildly decreased left ventricular shortening fractions, and 2 cardiomyopathies. Only the 2 cardiomyopathies were considered to be potential causes of syncope, and in both cases, the electrocardiogram was markedly abnormal. A similar percentage of echocardiograms were ordered during the first and last 3 years of the study (61% vs 71%).
History, physical examination, and electrocardiography provide a screening protocol that allows the identification of a cardiac cause of syncope in the overwhelming majority of pediatric patients. In the absence of a positive screen result, the echocardiogram does not contribute to the evaluation of syncope in children. We speculate that primary care providers and pediatric cardiologists continue to use echocardiography because of the paucity of data regarding its value in pediatric syncope. However, this study shows little benefit of screening echocardiography and should discourage its routine use.
Acute Kawasaki disease can result in the development of large coronary artery aneurysms that may persist. Abciximab, a platelet glycoprotein IIb/IIIa receptor inhibitor, is associated with resolution ...of thrombi and vascular remodeling in adults with acute coronary syndromes. The purpose of this study was to compare changes in aneurysm diameter at early follow-up in patients who had Kawasaki disease and received abciximab in addition to standard therapy with those who were treated with standard therapy alone.
Patients with Kawasaki disease and large aneurysms were divided into 2 groups on the basis of acute therapy: 1) abciximab in addition to standard therapy and 2) standard therapy alone. Echocardiograms were reviewed for coronary aneurysms (lumen diameter 1.5 times that of the adjacent vessel). Maximum aneurysm diameter was determined during the acute/subacute phase of Kawasaki disease (<6 weeks) and at early follow-up (4-6 months). Regression of the aneurysm was defined as a decrease in lumen diameter, and resolution was defined as normalization of the vessel.
Six patients had 20 aneurysms in the abciximab group, and 9 patients had 30 aneurysms in the standard therapy group. Early follow-up data were available for 19 of the 20 aneurysms in the abciximab group and 19 of the 30 aneurysms in the standard therapy group. Patients who were treated with abciximab demonstrated greater regression in aneurysm size at early follow-up than patients who were treated with standard therapy alone (percentage decrease: 41 +/- 19% vs 17 +/- 27%). In the abciximab group, 68% (13 of 19) of aneurysms resolved at early follow-up compared with 35% (7 of 19) in the standard therapy group.
Patients who were treated with abciximab demonstrated greater regression in aneurysm diameter at early follow-up than patients who received standard therapy alone. These findings suggest that treatment with abciximab may promote vascular remodeling in this population and warrants further study.
Dilated cardiomyopathy is the primary indication for heart transplantation in children beyond infancy. Although beta-blockers improve symptoms, ejection fraction, and survival in adults with ...congestive heart failure, little is known of their effects in children.
This study reviews our pediatric experience with the beta-blocker, metoprolol, at 3 institutions. We gave metoprolol to 15 children, age 8.6 ± 1.3 years (range 2.5 to 15 years), with idiopathic dilated cardiomyopathy (n = 9), anthracycline cardiomyopathy (n = 3), and Duchenne muscular dystrophy cardiomyopathy, post-myocarditis cardiomyopathy, and post-surgical cardiomyopathy (n = 1 each). All had been treated with conventional medications (digoxin, diuretics, and ACE inhibitors) for 22.5 ± 9 months before starting metoprolol. Metoprolol was started at 0.1 to 0.2 mg/kg/dose given twice daily and slowly increased over a period of weeks to a dose of 1.1 ± 0.1 mg/kg/day (range 0.5 to 2.3 mg/kg/day).
Between the time point of stabilization on conventional medications and the initiation of metoprolol therapy, there was no significant change in fractional shortening (13.1 ± 1.2% vs 15.0 ± 1.2%) or ejection fraction (25.6 ± 2.1% vs 27.0 ± 3.4%). However, after metoprolol therapy for 23.2 ± 7 months, there was a significant increase in fractional shortening(23.3 ± 2.6%) and ejection fraction (41.1 ± 4.3%) (
p < 0.05).
Metoprolol improves ventricular function in some children with dilated cardiomyopathy and congestive heart failure. Further study is warranted to better define which children may benefit most from beta-blocker therapy and which beta-blockers are most efficacious.
Assessment of ventricular function in patients with functionally single ventricles and unusual ventricular geometry is difficult. The Doppler myocardial performance index (MPI) may provide a method ...of assessing function in these patients. The purposes of this study were to compare the MPI in normal children and in children with a functionally single ventricle, and to compare the MPI in patients with single ventricles before and after bidirectional cavopulmonary anastamosis (BCPA). Echocardiograms of all patients who underwent BCPA between January 1994 and December 1998 were reviewed before and after surgical palliation. Age-matched normal subjects (n = 30) served as controls. The MPI was calculated from Doppler tracings of ventricular inflow and outflow. Of the 60 patients with single ventricles who underwent BCPA, 41 had adequate preoperative Doppler studies to allow calculation of the MPI, and 21 of 41 had adequate studies before and after BCPA. The MPI was higher in patients with single ventricles than in normal controls (0.67 ± 0.14 vs 0.32 ± 0.10, p <0.001). There was no significant difference in the MPI in patients with single ventricles before and after surgery (0.70 ± 0.16 vs 0.66 ± 0.15). However, patients who had a BCPA at <1 year of age had a significant decrease in the MPI after surgery (0.71 ± 0.10 vs 0.61 ± 0.11, p = 0.01). Compared with controls, the MPI was significantly higher in patients with single ventricles suggesting an altered hemodynamic state consistent with decreased ventricular function. The MPI decreased in patients who underwent BCPA at <1 year of age, suggesting an improvement in ventricular function. The MPI provides an objective method of assessing and following ventricular function in patients with single ventricles that is independent of ventricular geometry.
PDF
