Results 91 to 100 of about 98,664 (161)

*-Ring Orderings [PDF]

arXiv, 2016
We examine a number of *-ring orderings, generalizing classical properties of *-positive elements to *-accretives. We also examine *-rings satisfying versions of Blackadar's property (SP), generalizing some basic properties of Rickart *-rings to Blackadar *-rings.
arxiv  

Cutoff for random walks on graphs with bottlenecks [PDF]

arXiv, 2016
We examine the mixing time for random walks on graphs. In particular we are interested on investigating graphs with bottlenecks. Furthermore, the cutoff phenomenon is examined.
arxiv  

Left anterior descending coronary T-wave inversion pattern (Wellens’ syndrome) associated with myopericarditis and a normal left coronary artery

European Journal of Case Reports in Internal Medicine
Background: Wellens’ syndrome is characterised by a history of chest pain with an abnormal electrocardiogram (EKG), demonstrating biphasic or deeply inverted T waves in leads V2–3 (may extend to involve all precordial and lateral limb leads – the type B ...
Geeta Bhagia, Nasir Hussain, Fnu Arty, Victor Farah, Robert Biederman   +4 more
doaj   +1 more source

Miopericarditis como complicación cardiovascular en la infección por VIH.

Revista GICOS, 2021
Introducción: Las complicaciones cardiovasculares son actualmente una causa principal de morbilidad y mortalidad en la población infectada por el Virus de Inmunodeficiencia Humana (VIH), sobre todo en los países subdesarrollados.
Luis Dulcey, Jonathan Pineda, José Sampayo, Raimondo Caltagirone   +3 more
doaj  

Automatic Generation of Examinations in the Automatic Control Courses [PDF]

Final written examination is the most important part of summative assessment in automatic control courses. Preparation of the examinations with a given number of points according to the concept of Constructive Alignment (which could be the main concept in future automatic control education) takes significant amount of time of the educator and motivates
arxiv   +1 more source

Quantum theory of atomic self-frictional field [PDF]

arXiv
The self-frictional field of electrons remains one of the most important problems of the classical and quantum physics to date, therefore, it is to be examined theoretically and experimentally by scientists as an actual problem. This study aims to the recent important developments in the examination of the quantum self-frictional field, which is one of
arxiv  

Doppler ultrasound dataset for the development of automatic emboli detection algorithms

Data in Brief, 2019
The article describes a dataset of doppler ultrasound audio tracks taken on a sample of 30 divers according to the acquisition protocol defined by the Divers Alert Network.
Paola Pierleoni, Marco Mercuri, Alberto Belli, Massimo Pieri, Alessandro Marroni, Lorenzo Palma   +5 more
doaj  

Placement of Precordial leads in medical examination for healthy subjects and assessment of QRS-ST change by Na channel blocker

, 2004
Akihiko Shimizu, Takeshi Ueyama, Masahiro Esato, Ryosuke Kametani, Masashi Kanemoto, Akira Sawa, Masunori Matsuzaki   +6 more
openalex   +2 more sources

A Locally Robust Semiparametric Approach to Examiner IV Designs [PDF]

arXiv
I propose a locally robust semiparametric framework for estimating causal effects using the popular examiner IV design, in the presence of many examiners and possibly many covariates relative to the sample size. The key ingredient of this approach is an orthogonal moment function that is robust to biases and local misspecification from the first step ...
arxiv  

ECG challenge: identifying a critical pattern in a patient with chest pain and pre-existing right bundle branch block. [PDF]

Eur Heart J Case Rep
Ferrer-Menéndez M, González-Freixa C, Santaló-Corcoy M.   +2 more
europepmc   +1 more source