A DSP breath sound analyser Basano, L.; Brusasco, V.; Morettini, P. ...
1988 IEEE International Symposium on Circuits and Systems (ISCAS),
1988
Conference Proceeding
The growing availability of powerful digital signal processors (DSPs) makes possible the real-time analysis of almost all common biological signals. The authors consider the spectral analysis of ...breath sounds, which may provide an objective and quantitative assessment of the respiratory pathology in patients with pulmonary disorders. The authors propose a breath-sound analyzer consisting of a pick-up accelerometer, a real-time FFT (fast Fourier transform) analyzer, and an interface with a general-purpose personal computer. The spectra of normal and pathological breath sounds were analyzed for validation of the apparatus.< >
The Large Hadron Collider at CERN offers unprecedented challenges to the design and construction of detectors and trigger/data acquisition systems. For ATLAS, a three level trigger system has been ...developed to extract interesting physics signatures with a 10 6 rate reduction. To accomplish this, components of physics analysis traditionally deferred to offline physics analysis must be embedded within the online trigger system. For the muon trigger, the specific off-line algorithms MOORE (muon object oriented reconstruction) and MuId (muon identification) have been adopted so far for the on-line use, imposing an operation in a Bayesian-like environment where only specific hypotheses must be validated. After a short review of the ATLAS trigger, the paper shows the general strategy of the muon identification and selection accessing the full event data, or being seeded from results derived at a previous stage of the trigger chain
The ATLAS experiment at the Large Hadron Collider (LHC) will face the challenge of efficiently selecting interesting candidate events in pp collisions at 14 TeV center-of-mass energy, whilst ...rejecting the enormous number of background events. The high-level trigger (HLT = second level trigger and event filter), which is a software based trigger will need to reduce the level-1 output rate of ap 75 kHz to ap 200 Hz written out to mass storage. In this talk, an overview of the current physics and system performance of the HLT selection for electrons and photons is given. The performance has been evaluated using Monte Carlo simulations and has been partly demonstrated in the ATLAS testbeam in 2004. The efficiency for the signal channels, the rate expected for the selection, the global data preparation and execution times were highlighted. Furthermore, some physics examples were discussed to demonstrate that the triggers are well adapted for the physics programme envisaged at the LHC
Thin Gap Gas Chambers for the DELPHI endcaps Adam, W.; Albrecht, E.; Bozzo, M. ...
1996 IEEE Nuclear Science Symposium. Conference Record,
1996, Letnik:
1
Conference Proceeding
Odprti dostop
Thin Gap Gas Chambers have been proposed for an upgrade of the endcaps of the DELPHI detector at LEP. Two full size chambers have been built and a study of the optimal operating conditions has been ...carried out. In this paper the main construction parameters are discussed and test results will be given. Tests of the electronic readout were performed and the general feasibility of the detector is demonstrated.
The carbon isotopic signature of carbonates depends on secular variations of organic carbon and carbonate carbon production/burial rates. A decrease in carbonate productivity makes the ...organic/carbonate carbon ratio unstable up to the point that even minor variations in the organic carbon reservoirs can provoke carbon isotopic shifts. The δ
13C positive shifts of the middle Carixian (early Pliensbachian) and the early Bajocian recorded in the Umbria–Marche–Sabina domain represent a good example of this mechanism. Both sedimentology and lithostratigraphy of pelagic platform–basin carbonate systems in this area show that important changes in the source of carbonates correspond to the observed isotopic shifts. The middle Carixian event is in fact well correlatable to the drastic reduction of benthic carbonate production on rift-related intrabasinal highs, which then became pelagic carbonate platforms. The early Bajocian event is concomitant with the beginning of a long hiatus on the pelagic carbonate platforms and with a drop of the biodiversity of calcareous organisms followed by the onset of biosiliceous sedimentation in basins.
ABSTRACT
Introduction: Cardiomyopathy is a common cause of morbidity and death in patients with Duchenne muscular dystrophy (DMD). Methods: This investigation was a cross‐sectional cross‐sectional ...analysis of clinical data from the multi‐institutional Cooperative International Neuromuscular Research Group (CINRG) DMD Natural History Study of 340 DMD patients aged 2–28 years. Cardiomyopathy was defined as shortening fraction (SF) <28% or ejection fraction (EF) <55%. Results: Two hundred thirty‐one participants reported a prior clinical echocardiogram study, and 174 had data for SF or EF. The prevalence of cardiomyopathy was 27% (47 of 174), and it was associated significantly with age and clinical stage. The association of cardiomyopathy with age and clinical stage was not changed by glucocorticoid use as a covariate (P > 0.68). In patients with cardiomyopathy, 57% (27 of 47) reported not taking any cardiac medications. Cardiac medications were used in 12% (15 of 127) of patients without cardiomyopathy. Conclusions: We found that echocardiograms were underutilized, and cardiomyopathy was undertreated in this DMD natural history cohort. Muscle Nerve 50:250–256, 2014
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