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Friction modelling is a delicate problem which poses several challenges to control engineers. This work focuses on two recent models which describe friction with nonlinear dynamical systems: The Lugre model, and the model of Bliman & Sorine. Comparisons are made concerning friction phenomena captured, computational issues, identification of model parameters and behaviour at zero-crossings of t

Electrical storm (ES) presents a difficult management problem that has predominantly been described in adults and there are limited published data relating to children. We set out to characterize ES in children to assist management based on published literature and own institutional experience. We retrospectively analyzed the records of children presenting with ES to our institution between July 2

By tradition, L2 motivation research has a monolingual bias – the motivational systems of a learner’s different languages conceptualized as separate entities rather than as cognitively interconnected. At a time when multilingualism has become a new world order (Douglas Fir Group, ) and where there is evidence of powerful identity experiences connected to speaking several languages (Pavlenko, ) thi

For nogle kan det tekstkritiske arbejde nok opleves både teknisk utilgængeligt og som bærer af en iboende form for skepticistisk bibelkritik, men sådan forholder det sig ikke. Den bibelske tekstkritik er derimod den uundværlig første del af den arbejdsproces, der munder ud i at den enkelte får adgang til Bibelen. I denne artikel vil jeg give tre eksempler på, hvordan beskæftigelse indenfor nytesta

Terahertz (THz) technologies provide opportunities ranging from calibration targets for satellites and telescopes to communication devices and biomedical imaging systems. A main component will be broadband THz absorbers with switchability. However, optically switchable materials in THz are scarce and their modulation is mostly available at narrow bandwidths. Realizing materials with large and broa

Introduction: The Chilean Society of Bariatric and Metabolic Surgery, together with other scientific societies, led a process for adapting the Canadian clinical practice guideline for obesity in adults for Chile. The aim of the Canadian guideline, among its main objectives, was to propose changes in obesity management using a chronic disease framework and focusing on improving patient-centered hea

En fråga som ställer till problem i straffrättskipningen är hur flera systematiskt begångna brott skall bedömas. Kan man behandla 100 ringa narkotikabrott, som begåtts systematiskt — affärsmässiga överlåtelser av små mängder narkotika — som 100 grova narkotikabrott, eller som ett enda grovt narkotikabrott? Hur hanterar man 20 bedrägerier, som ingår i en från början uppgjord brottsplan? Artikelförf

The devices that constitute the Internet of Things are evolving to include more than just enabling sensing and actuation over a wireless interface. In a contemporary scenario, these devices perform tasks and contribute to an aggregate information flow, in a distributed manner. In the wake of this evolution, new distributed Internet of Things frameworks have emerged. These frameworks maintain a dis

Prenatal exposure to the highly toxic and common pollutant cadmium has been associated with adverse effects on child health and development. However, the underlying biological mechanisms of cadmium toxicity remain partially unsolved. Epigenetic disruption due to early cadmium exposure has gained attention as a plausible mode of action, since epigenetic signatures respond to environmental stimuli a

IMPORTANCE Active perinatal care increases the rate of survival of extremely preterm infants, but there are concerns that improved survival might increase the rate of disabled survivors. OBJECTIVE To determine the neurodevelopmental outcomes of a national cohort of children 6.5 years of age who had been born extremely preterm (<27 weeks' gestational age) in Sweden. DESIGN, SETTING, AND PARTICIPANT

Since 2008, the Swedish government has launched occasional offers of funding for graduate schools aimed at practising teachers. The fundamental purpose of this initiative is to enhance quality in the Swedish school system by implementing what is stated in the Education Act, namely that education at all levels should be based upon scientific knowledge and evidencebasedexperience. The Swedish Resear

During development, hematopoietic cells originate from endothelium in a process known as endothelial-to-hematopoietic transition (EHT). To study human EHT, we coupled flow cytometry and single-cell transcriptional analyses of human pluripotent stem cell-derived CD34(+) cells. The resulting transcriptional hierarchy showed a continuum of endothelial and hematopoietic signatures. At the interface of