Search results for "Stent"

Ventricular Fibrillation and Tachycardia Detection Using Features Derived from Topological Data Analysis

2022

A rapid and accurate detection of ventricular arrhythmias is essential to take appropriate therapeutic actions when cardiac arrhythmias occur. Furthermore, the accurate discrimination between arrhythmias is also important, provided that the required shocking therapy would not be the same. In this work, the main novelty is the use of the mathematical method known as Topological Data Analysis (TDA) to generate new types of features which can contribute to the improvement of the detection and classification performance of cardiac arrhythmias such as Ventricular Fibrillation (VF) and Ventricular Tachycardia (VT). The electrocardiographic (ECG) signals used for this evaluation were obtained from…

Monitoring of persistent organic pollutants in the polar regions: knowledge gaps & gluts through evidence mapping

2017

Persistent organic pollutants (POPs) are widespread compounds that accumulating in polar regions canalise through trophic webs. Although several dozens of studies have been carried out in the last decades, the information is generally scattered across a large number of literature sources. This does not allow an efficient synthesis and constraints our understanding on how address future monitoring plans and environmental conservation strategies on the Polar Regions with respect to POPs. Thus, here, we present the outcome of a systematic map (SM) to scope, screen and chart evidences from literature dealing with POPs in Polar regions. The SMs strive to produce rigorous guidelines and have rece…

(S)legati (d)al lavoro. Adulti giovani e occupazione tra ricomposizione e frammentazione sociale

2005

Tension between freedom and dependence-A challenge for residents who live in nursing homes.

2017

Aims and objectives To present results from interviews of older people living in nursing homes, on how they experience freedom. Background We know that freedom is an existential human matter, and research shows that freedom remains important throughout life. Freedom is also important for older people, but further research is needed to determine how these people experience their freedom. The background for this article was a Scandinavian study that occurred in nursing homes; the purpose of the study was to gain knowledge about whether the residents felt that their dignity was maintained and respected. Design The design was hermeneutic, with qualitative research interviews. Method Twenty-eigh…

De Finnis cornutis

2014

<p><em>Horned Finns</em>. The ‘cornuti Finni’ mentioned in the <em>Historia Norwegiae</em> have not found their explanation, because the Latin word <em>cornu</em>, from which the adjective is derived, has been understood in the strict sense of ‘horn on the head’. The Latin word, however, also means ‘hoof’ of horses or ‘cloven hoof’ of cows and goats, even of the mythologic Faunus and Pan. In December 1913 Kai Donner saw in Dudinka Avam-Samojeds, who because of their cylindrically shaped reindeer winter boots, the front of which was hoof-shaped, were called ‘hoofed men’ (in Finnish ‘kaviolliset miehet’). In the extracts of Aristeas of Proconnesus, wh…

Contractile Reserve and Extent of Transmural Necrosis in the Setting of Myocardial Stunning: Comparison at Cardiac MR Imaging

2010

To perform a comparison of cardiac magnetic resonance (MR) imaging-derived ejection fraction (EF) during low-dose dobutamine infusion (EF(D)) with the extent of segments with transmural necrosis in more than 50% of their wall thickness (ETN) for the prediction of major adverse cardiac events (MACEs) and late systolic recovery soon after a first ST-segment elevation myocardial infarction (STEMI).Institutional ethics committee approval and written informed consent were obtained. One hundred nineteen consecutive patients with a first STEMI, a depressed left ventricular EF, and an open infarct-related artery underwent MR imaging at 1 week after infarction. EF(D) and ETN (by using a 17-segment m…

To work or to care? Working women's decision-making

2015

Recent changes in older people's public care services in Nordic countries in particular in Finland and Sweden are based on implicit expectations that family members will increase their involvement in care. In Nordic countries, the care of small children has been acknowledged to be a social matter that concerns gender equality and the work life participation of both men and women, while the situation of working carers of older people is much less acknowledged. This study addressed the question of how Finnish working women who give care to their older parents argue for and against their decisions of working and caring and the meaning of work and care in these decisions. Majority of the interv…

Local Normal Forms for First-Order Logic with Applications to Games and Automata

1999

Building on work of Gaifman [Gai82] it is shown that every first-order formula is logically equivalent to a formula of the form ∃ x_1,...,x_l, \forall y, φ where φ is r-local around y, i.e. quantification in φ is restricted to elements of the universe of distance at most r from y. \par From this and related normal forms, variants of the Ehrenfeucht game for first-order and existential monadic second-order logic are developed that restrict the possible strategies for the spoiler, one of the two players. This makes proofs of the existence of a winning strategy for the duplicator, the other player, easier and can thus simplify inexpressibility proofs. \par As another application, automata mode…

Kondo Resonance in a Mesoscopic Ring Coupled to a Quantum Dot: Exact Results for the Aharonov-Bohm/Casher Effects

2000

We study the persistent currents induced by both the Aharonov-Bohm and Aharonov-Casher effects in a one-dimensional mesoscopic ring coupled to a side-branch quantum dot at Kondo resonance. For privileged values of the Aharonov-Bohm-Casher fluxes, the problem can be mapped onto an integrable model, exactly solvable by a Bethe ansatz. In the case of a pure magnetic Aharonov-Bohm flux, we find that the presence of the quantum dot has no effect on the persistent current. In contrast, the Kondo resonance interferes with the spin-dependent Aharonov-Casher effect to induce a current which, in the strong-coupling limit, is independent of the number of electrons in the ring.

First search for dyons with the full MoEDAL trapping detector in 13 TeV pp collisions

2021

The MoEDAL trapping detector, consists of approximately 800 kg of aluminium volumes. It was exposed during Run-2 of the LHC program to 6.46 fb^-1 of 13 TeV proton-proton collisions at the LHCb interaction point. Evidence for dyons (particles with electric and magnetic charge) captured in the trapping detector was sought by passing the aluminium volumes comprising the detector through a SQUID magnetometer. The presence of a trapped dyon would be signalled by a persistent current induced in the SQUID magnetometer. On the basis of a Drell-Yan production model, we exclude dyons with a magnetic charge ranging up to 5 Dirac charges, and an electric charge up to 200 times the fundamental electric …