Search results

Context. Top-down chemistry is believed to be responsible for the formation of the large molecular compounds such as the polycyclicaromatic hydrocarbon-like molecules and the fullerenes observed in the interstellar medium. The release of these large molecules fromthe parent grains remains an important issue to be investigated.Aims. Cosmic rays irradiate the dust grains during their journey in the

This article analyses the impact of Brexit on devolved competences in environmental protection. It maps the post-Brexit division of the United Kingdom (UK)’s internal (devolved) and external (international) competences and how this may shift when competences are returned from the European Union (EU). Crucially, the article suggests that certain of these EU powers do not simply derive from the EU b

Signal processing complexity and required memory become problematic in massive MIMO systems as the dimension of channel state information (CSI) matrix grows significantly with the large number of antennas and users. To address these challenges, we propose the first angular-domain massive MIMO detection scheme, which is based on three concepts: transferring the baseband processing from the spatial

A considerable part of latency in the baseband of massive multiple-input multiple-output (MIMO) systems is introduced by orthogonal frequency division multiplexing (OFDM) (de)modulation. To address the low-latency demand of massive MIMO systems, a fast Fourier transform (FFT) processor and corresponding reordering scheme are proposed, which reduce the processing latency and reordering latency of O

Objective: To evaluate the hemostatic system in patients undergoing surgery for acute type A aortic dissection (ATAAD) compared with those undergoing elective aortic procedures. Design: This was a prospective, observational study. Setting: The study was performed at a single university hospital. Participants: Twenty-five patients with ATAAD were compared with 20 control patients undergoing electi

Eye tracking is a useful tool when studying the oscillatory eye movements associated with nystagmus. However, this oscillatory nature of nystagmus is problematic during calibration since it introduces uncertainty about where the person is actually looking. This renders comparisons between separate recordings unreliable. Still, the influence of the calibration protocol on eye movement data from peo

An integral equation-based numerical method for scattering from multi-dielectric cylinders is presented. Electromagnetic fields are represented via layer potentials in terms of surface densities with physical interpretations. The existence of null-field representations then adds superior flexibility to the modeling. Local representations are used for fast field evaluation at points away from their

Advanced combustion such as the partially premixed combustion (PPC) is characterized by high energy efficiency. However, they are sensitive to the inlet condition and injection of a combustion engine. Therefore, it is essential to use combustion feedback. The accuracy of the feedback variables, derived from the cylinder pressure signal, is crucial for effective combustion feedback control. This pa

The importance of semi-arid ecosystems in the global carbon cycle as sinks for CO 2 emissions has recently been highlighted. Africa is a carbon sink and nearly half its area comprises arid and semi-arid ecosystems. However, there are uncertainties regarding CO 2 fluxes for semi-arid ecosystems in Africa, particularly savannas and dry tropical woodlands. In order to improve on existing remote-se

The aim is to illustrate how web marketing frame commercial baby food as a value-adding part of weaning practice and discuss how various ways of framing relate to contemporary mothering ideals. Drawing on “practice” and “frame analysis,” we illustrate how four baby food producers’ web marketing frame commercial baby food and weaning as “medical,” “fun” or “convenient.” The analysis shows that the

This article reports findings from a study of weaning from a perspective informed by practice theory. The overall aim is to examine how parents integrate convenience baby food into their everyday feeding practices. The focus is the embedding of convenience baby foods in the routines and rhythms of everyday life and the “do-ability” of different practices. The study is based on fieldwork with ninet

Why do not academic teachers more frequently use results from education, psychology, cognitive sciences, and related fields while planning, carrying out, and evaluating teaching? It has been argued that if only they did, education would improve. It has further been argued that results from these fields are not communicated in ways suitable for teachers from other disciplines, and therefore there i

“Home” has become a commercialised place in contemporary Sweden. As both cause and ef- fect of this development, the Swedish market for furniture and interior decoration has grown significantly during the last twenty years. Retailers, television shows and magazines have con- tributed to a steadily progressing market, where consumers shop for the latest in furniture as well as the latest ideas and

The ability to handle sensory conflicts and use the most appropriate sensory information is vital for successful recovery of human postural control after injury. The objective was to determine if virtual reality (VR) could provide a vehicle for sensory training, and determine the temporal and spatial nature of such adaptive changes. Twenty healthy subjects participated in the study (10 females). T