A simple, fast and efficient method for designing wideband radar absorbers is proposed. The idea is to modify the circuit analog absorber method without perturbing the bandwidth. This is done by utilizing the asymptotic behavior of such an absorber at low frequency and replacing the band-stop resonating frequency selective surfaces with low-pass capacitive ones, which can be synthesized by square

Behovet av geriatrisk och gerontologisk kompetens är stor och det är angeläget att öka antalet specialistutbildade sjuksköterskor inom vård av äldre. Sveriges befolkning blir allt äldre, vilket bland annat beror på att vi blir bättre på att främja människors hälsa och bota sjukdomar. Den ökade medellivslängden till trots, kantas ofta den sista tiden i livet av en period med ett ökat behov av vårdi

The common-mode (CM) signal in wireline transmission systems has proven to provide valuable information exploited for mitigating narrowband noise at the receive side. We focus on the case of broadband noise. Treating the CM signal as an additional receive signal, we investigate the capacity of the copper cable channel for different levels of coordination among the users. We introduce a channel mod

Successful projects require two key elements to be set: the time frame for the project and the scope of the project. Accurately deciding these two attributes greatly increases the probability of success. If, for example we would like to build a house, we should start building it in spring so that we can lie the foundations of the house on a non-frozen ground. Moreover, we know that we should be re

A method of producing short chain alcohols from glycerol generated as a byproduct of biodiesel production is provided.

This study investigates how the format of limb lead display influences electrocardiographic (ECG) interpretation. The positive aspect of lead aVR (included in the classical display) is directed opposite to that of the other leads. This could lead to an ECG interpreter's disregard of lead aVR, thus providing a "standard 11-lead ECG." It is hypothesized that when using the classical limb lead displa

It is easy to demonstrate the naivety of many people preparing messages for intelligent beings on other planets using pictures. On the other hand, constructivism, which supposes all our perception to rely on social constructs, has long been shown to be untenable, notably by Gibson, who instead suggested that some general ecological principles have to be taken into account. In a parallel fashion, I

The next challenge for MIMO radio channel models is to simulate the time-variant nature of the channel correctly. Cluster-based MIMO channel models are well suited for this problem, however they currently lack an accurate parameterization of the time-variant cluster parameters. In this paper we identify and track clusters from three differentmeasurements conducted in an indoor, a sub-urban, and a

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High-speed communication using the copper network, originally installed for telephony, is one of the dominant Internet access techniques. Several variants of a technology referred to as digital subscriber line (xDSL) have been developed, standardized and installed during the last two decades. Essentially, xDSL achieves high rates by exploiting wide bands of the copper cable channel. The shorter th