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Quantitative soot measurements in an HSDI Diesel engine

Quantitative in-cylinder measurements of soot volume fraction in a single-cylinder HSDI Diesel engine, based on a VOLVO D5, has been carried out using the laser-induced incandescence (LII) technique using laser excitation at 1064 nm and an ICCD camera with prompt gate detection. Quantitative data was obtained by relating the LII signal response from the engine to that from a calibration flame. The

Tryggare kan ingen vara : Migration, religion och integration i en segregerad omgivning

Religion has greater importance in many immigrants’ lives after migration than it had before. The thesis examines why this is so. It also analyzes the social consequences of religious commitments and membership. More specifically, the chain of causal links between migration, religion and integration or segregation is explored, through the identification of social mechanisms on the societal, organi

On bandwidth enhancement of compact multiple antennas with parasitic decoupling

Recently, it has been shown that a parasitic element can be used to fully decouple closely spaced antennas. However, the decoupled antennas suffer from narrow bandwidth, as compared to the bandwidth of isolated single antennas, which is also the case for other decoupling methods, such as multiport conjugate match and neutralization line. In this paper, we investigate the potential in bandwidth enh

Optimal and suboptimal linear receivers for time-hopping impulse radio systems

In this paper, we consider optimal and suboptimal linear receivers for a given user in a frequency-selective multiuser environment. The optimal linear receiver combining all the samples from the frames and the multipath components, according to the MMSE criterion, is designed. Due to the complexity of this receiver, two suboptimal receivers are considered: (i) an optimal frame combining receiver,