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Finding the gap : A brightness-based strategy for guidance in cluttered environments

The ability to move safely between obstacles is critical for animals that fly rapidly through cluttered environments but surprisingly little is known about how they achieve this. Do they reactively avoid obstacles or do they instead fly towards the gaps between them? If they aim towards gaps, what information do they use to detect and fly through them? Here, we aim to answer these questions by pre

Transaction costs, clans and corporate culture

For a long time it has been recognized that traditional bureaucratic modes of control are not very efficient in many highly uncertain, rapidly changing or otherwise troublesome situations.Inspired by transaction cost thinking different authors have suggested that clan form control or certain types of corporate cultures should do better in these circumstances. Among these, Ouchi (1980) and Wilkins

The 2005 London terror attacks : An investigation of changes in psychological wellbeing and social capital pre- and post-attacks (2003-07)-A UK panel study

The London public transport suicide bombings, which occurred on 7th July 2005, were described as the worst single terrorist atrocity on British soil to date. Past acts of terrorism have been associated with deterioration in population mental health. They may also negatively impact levels of social capital, which is considered a buffer against poor mental health outcomes. By employing panel data fr

Speech Enhancement Using Multiple Soft Constrained Beamformers and Non-coherent Technique

This paper presents a new robust microphone array processing technique to enhance speech signals under the influence of noise and jammer(s). The new structure comprises two soft constrained subband beamformers and a non-coherent processing technique. Essentially, the first beamformer enhances the desired speech signal in a specified constrained region. The residual interference in the beamformer's

Subband generalized sidelobe canceller - a constrained region approach

The paper proposes an efficient microphone array processing technique for speech enhancement. The scheme incorporates the source and interference predefined regions into a subband generalized sidelobe canceller (GSC). The lower path consists of two space constrained beamformers to extract the interference information outside the source region. This information then serves as a reference for an imp

Directed vaccination against pneumococcal disease

Immunization strategies against commensal bacterial pathogens have long focused on eradicating asymptomatic carriage as well as disease, resulting in changes in the colonizing microflora with unknown future consequences. Additionally, current vaccines are not easily adaptable to sequence diversity and immune evasion. Here, we present a "smart" vaccine that leverages our current understanding of di

Coordination of care in the Nordic countries

Coordination of health care exists at many different levels and in many different forms. We describe the similarities and differences in coordination mechanisms among the Nordic countries. In some respects, the Nordic countries approach coordination problems in similar ways although differences exist. The overall pattern shows that Finland and Sweden have less country-wide coordination compared wi

Connection between modeled blackbody radiation and dipole emission in large-area nanostructures

When modeling the emission of light from nanostructures, we typically study either (1) blackbody radiation or (2) dipole emission. For effective analysis, it is important to know how results from these two types of modeling are related. Here, we use Kirchoff's reciprocity to study how interference affects the emissivity and number of emitted blackbody photons from a thin film for varying thickness

Corporate social responsibility and stock market actors : A comprehensive study

Purpose– The purpose of this study is to analyse the views stock market actors have on corporate communication of corporate social responsibility (CSR) information grounded on legitimacy and stakeholder theory. Recent findings suggest that management teams experience an increased interest and demand for CSR information from the actors on the stock market and that this underlie a focus shift. This

Greening the global classroom: Experiences using MOOCs to advance sustainability education

The proliferation of massive open online courses (MOOCs) has been a phenomenon in higher education but only recently the subject of academic literature. MOOCs combine the traditional ideas of cohort and guided learning with open access and a truly global classroom. With over twenty thousand learners attracted to such courses, we argue that they can be a powerful tool in advancing sustainability ed

Light-induced self-assembly of active rectification devices

Self-propelled colloidal objects, such as motile bacteria or synthetic microswimmers, have microscopically irreversible individual dynamics—a feature they share with all living systems. The incoherent behavior of individual swimmers can be harnessed (or “rectified”) by microfluidic devices that create systematic motions that are impossible in equilibrium. We present a computational proof-of-concep

Experimental Investigation of the Effect of Steam Dilution on the Combustion of Methane for Humidified Micro Gas Turbine Applications

Water introduction in the micro gas turbine (mGT) cycle is considered the optimal route for waste heat recovery and flexibility increase of such a small-scale combined heat and power (CHP) unit. However, humidification of the combustion air in a mGT affects combustion stability, efficiency, and exhaust gas emissions. This can lead to a non-stable, incomplete combustion, which will affect the globa