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This paper describes an original numerical prediction technique developed for the analysis of coupled vibro-acoustic problems in fluid waveguides. Specifically it is a wave-based method that adopts a spectral element approach. Unlike the conventional element-based methods, this technique uses wave functions that satisfy the governing equations to describe the dynamic variables exactly. One advanta
Balancing a rotating machine is a vital step towards ensuring it will operate reliably and safely. To achieve this condition monitoring is an important aspect for early faulty detection and it can also result in the improvement of the operational continuity and equipment safety. Imbalance itself, is a common problem in rotating machinery and it can lead to poor or even dangerous vibration levels.
The transition to a circular economy is a complex process requiring wide multi-level and multi-stakeholder engagement and can be facilitated by appropriate policy interventions. Taking stock of the importance of a well-balanced policy mix that includes a variety of complementing policy instruments, the circular economy action plan of the European Union (COM(2020) 98 final) includes a section about
This is an analysis of the recently proposed amendments in the Swedish asylum legislation under the prism of intra-EU solidarity. The main issue raised is the extent to which an EU state may downgrade protection and block entry in its territory to asylum seekers and refugees without proper identification documents with the motivation that this might evoke more EU solidarity and responsibility.
Within cognitive science, “blindness” to choice is commonly treated as typical of human cognition, implying unreliable agents who essentially lack any awareness of their own choices (e.g. Johansson et al., 2005, 2008; Hall et al., 2010, 2013). Within cognitive semiotics, however, choice awareness is seen as a continuous phenomenon, which is susceptible to the influence of a variety of factors. Man
To map out the state of the art of comparative studies of Internet use and recognize the contributions and shortcomings in the current literature, we have used a four-dimension framework to conduct a review of journal articles indexed in the Social Sciences Citation Index (SSCI) in the field of communication studies in the Web of Science core collection between 1969 and 2019. Our findings describe
Plastics play an essential role in modern society, but also lead to significant impacts on the environment and climate. Reducing such impacts while retaining the usefulness of plastics requires a shift towards a more circular and sustainable plastics system. This report tells the story of plastics, and their effect on the environment and climate, and looks at their place in a European circular eco
In the literature on Swedish labour market history, it is commonly accepted (Westerståhl 1945, Nycander 2008) that the Swedish state in the late nineteenth and early twentieth centuries was unique in its abstention from anti-union, anti-strike policy. While in other European countries the conflict between employers and workers led to state repression of unions and strikes, the Swedish state was ne
The article addresses the broader relationships between seaweed and algae as a marine resource, destination development, and sustainability. In many European countries, an industry around seaweed has emerged, ranging from high-end restaurants that provide their customers with local, seasonal and sustainableingredients, to entrepreneurs offering “harvest your own seaweed”-tours. In this explorative
The digital information age has changed global tourism in profound ways. Information and Communication Technologies (ICT) are pervasive, and they have become inextricably linked with contemporary consumer cultures. ICTs represent affordances: to apprise, plan, order, network, socialize, stream, transact and rate. These are remunerated with concessions in the form of consumer data that is used to d
Is the 'natural resource curse' destiny? Are different ways to link natural resources and economic development? Using two particular regions as case studies, this edited collection examines the divergent development paths of natural resource rich countries over the past two centuries. Bolivia, Chile and Peru are neighbour states with a common history and are globally known by their mining endowmen
A finite element method is developed for the study of elastic wave propagation in layered ground environments. The formulation is based on a spectral finite-element approach using a mixture of high-order element shape functions and wave solutions. The numerical method provides solutions to vibration transmission on and within layered elastic waveguides. Examples of its use include the theoretical
Electrical impedance tomography (EIT) is a noninvasive imaging modality, where imperceptible currents are applied to the skin and the resulting surface voltages are measured. It has the potential to distinguish between ischaemic and haemorrhagic stroke with a portable and inexpensive device. The image reconstruction relies on an accurate forward model of the experimental setup. Because of the rela
Cells of the exocrine pancreas produce digestive enzymes potentially harmful to the intestinal mucosa. Dopamine has been reported to protect against mucosal injury. In looking for the source of dopamine in the small intestine, we found that the duodenal juice contains high levels of dopamine and that the pancreas itself has a high dopamine [and dihydroxyphenylalanine (dopa)] content that does not
As the widespread pessimism about African agriculture has receded, policies for a green revolution in Africa are again called for. This study explores the presence of a national-level green revolution in Ethiopia and finds that an Ethiopian green revolution has taken place since the mid-1990s, mainly among staple-growing smallholders in agroecologically favourable areas and that the state has play
Streptococcus agalactiae, also known as group B Streptococcus (GBS), is the major cause of neonatal sepsis in humans. A critical step to infection is adhesion of bacteria to epithelial surfaces. GBS adhesins have been identified to bind extracellular matrix components and cellular receptors. However, several putative adhesins have no host binding partner characterised. We report here that surface-
Background: Patients with wake-up ischemic stroke who have evidence of salvageable tissue on advanced imaging can benefit from intravenous thrombolysis. It is not known whether patients who do not fulfil such imaging criteria might benefit from treatment, but studies indicate that treatment based on non-contrast CT criteria may be safe. Tenecteplase has shown promising results in patients with acu
We study the codimension-one and -two bifurcations of the Ornstein-Zernike equation with hypernetted chain (HNC) closure with Lennard-Jones intermolecular interaction potential. The main purpose of the paper is to present the results of a numerical study undertaken using a suite of algorithms implemented in MATLAB and based on pseudo arc-length continuation for the codimension-one case and a Newto
BACKGROUND: Small intestinal neuroendocrine tumors (SI-NETs) are difficult to diagnose in the early stage of disease. Current blood biomarkers such as chromogranin A (CgA) and 5-hydroxyindolacetic acid (5-HIAA) have low sensitivity and specificity. This is a first pre-planned interim analysis (NORDIC non-interventional, exploratory, EXPLAIN study (NCT02630654)). Its objective is to investigate if
