Objective: The atrioventricular (AV) node plays a central role in atrial fibrillation (AF) as it influences the conduction of impulses from the atria into the ventricles. In the present paper, the statistical dual pathway AV node model, previously introduced by us, is modified so that it accounts for atrial impulse pathway switching even if the preceding impulse did not cause a ventricular activat

The outcome of Design, Innovation and Product development research is often manifested as recommendations in the form of methods, but these do not always find their way into industrial application. This paper elaborates on drivers and barriers for the spread of product development methodology based on 41 interviews with managers, designers, developers and knowledge brokers. Results indicate a rang

If we are being-of-the-world, how can we ever avoid participation? From this question Avhandling / Av_handling (Dissertation / Through_ action) unfolds. It invites to engage in an ongoing continuum of entanglements, where the moment of connection is unavoidable. This invitation demands that we are attentive to our mutual co-constitutiveness, that we take responsibility for what gets excluded as we

History shows that companies that survive in a severe competitive climate are those that are highly adaptable to market and technological changes. Product development is one of the key activities that assure company survival by renewal of its offer to its customers. A scientific formalism has to be created to fulfill two purposes: 1) to ensure that the design and development of a product is succes

The need for a scientific formalism for product realization is the translation of a need onto a product which is developed right in time, at the right costs, and fulfills the specifications set out for the product. To achieve this, most existing methods focus on the customer, or on a key technology as the backbone of product development. In this paper, we claim that efforts must be directed toward

The elusive chimaera “design” has been, in turn, an idea, a plan, a purpose, a sketch, a process, the result of a process, the core of a profession and the core of emerging professions… As such, the concept of what design is, will remain contradictory and resist to being ever determined in the absolute: the limitations of design are those that are imposed by those who define them. On an abstract l

Föreliggande studie riktas specifikt mot hur ledande politiker och tjänstemänför de tre svenska storstäderna Göteborg, Malmö och Stockholm beskriverden urbanisering de själva är navet i. Närmare bestämt riktas intresset motstyrning för att hantera de kapacitetsutmaningar som de tre storstäderna ställsinför när de arbetar med att möta efterfrågan och rättigheten till kommunalverksamhet från allt fl

Slight bracing of steel bridges to control end-warping of their compression flanges near the end-supports can be very effective in enhancing the load-carrying capacity of the main girders that are involved. Relatively little information is available, however, regarding the stiffness and strength requirements of end-warping bracings. The results of seven large-scale laboratory tests of different co

Steel girders require stability controls for different construction stages before the lateral-torsional support from the concrete deck occurs. The load-carrying capacity of bridge girders and bracing forces generated in their bracings are very sensitive to the girders' initial imperfections in terms of both the magnitude and distribution along the span. Relatively little knowledge is available in

New durable and hydroxide ion conducting anion-exchange membranes (AEMs) are currently required in order to develop alkaline fuel cells into efficient and clean energy conversion devices. In the present work we have attached quaternary piperidinium (QPi) groups to poly(2,6-dimethyl-1,4-phenylene oxide)s (PPOs) via flexible alkyl spacer chains with the aim to prepare AEMs. The bromine atoms of brom

This paper presents a holistic approach to perform energy renovations of office buildings. A real case study is used to demonstrate how different software can be used to facilitate the work of architects and engineers during different design stages. Initially, the moisture safety of the building is coupled to its energy performance to define the optimum insulation level. The new interior layout is