The envelope process is a useful analytical tool which is often used to study wave groups. Most research on statistical properties of the envelope, and thus of wave groups, was focused on one dimensional records. However for the marine application, an appropriate concept should be two dimensional in space and variable int time. Although a generalization to higher dimensions was introduced by Adler

In an increasingly competitive environment, technical innovation in products and processes is by a vast number of manufacturing companies regarded as one of the most powerful enablers to differentiate from competitors and achieve competitive advantage. Accordingly, some manufacturing companies spend significant amounts of investments in innovation projects. In this paper, we examine the relationsh

In neuroscience a number of new techniques have been developed by means of which it has become possible to study the activity of the living human brain. By means of these techniques we are beginning to understand the neurophysiology behind environmental attitudes and preferences. In addition to an introduction to cognitive neuroscience, this invited symposium contains a number of presentations, wh

High-level modeling languages are receiving increased industrial and academic interest within several domains, such as chemical engineering, thermo-fluid systems and automotive systems. One such modeling language is Modelica. Modelica is an open language, specifically targeted at multi-domain modeling and model re-use. Key features of Modelica include object oriented modeling, declarative equation

The current rapid development within work-environment research has created a considerable demand among industrial hygienists for suitable analytical methods. PIXE (particle-induced X-ray emission analysis), which was introduced in Lund in 1970, has been shown to be a feasible method for use in studying the elemental composition of aerosols. However, in some work environments, fluorine, an element

A charge sampling mixer with embedded and programmable filter function is described, which is not based on the conventional sub-sampling but the proposed bandpass charge sampling (BPCS) principle. A BPCS circuit samples a radio signal by integrating the weighted current of the clocked radio signal in n clock cycles. The large sampling capacitor used in the circuit results in low noise and low char

Den dialog som här återges handlar om hur man pratar om olika typer av pengar i samband med konkurser. Vi skall se hur gränsdragningen mellan olika pengar ”används”. Den blir en resurs för att uttrycka företagarmoral och respektabilitet. Det empiriska materialet utgörs av intervjuer med företagare som haft företag som försatts i konkurs. 22 företagare intervjuades 1995. De företagare som citeras i

We examine wireless systems employing Rake receivers and fast scheduling over multiple users. The interactions between multipath diversity, multiuser diversity, and the feedback delay are investigated in terms of the mean signal-to-noise ratio (SNR). It is assumed that all users experience the same propagation characteristics, i.e., the same number of taps and power-delay profile (PDP). The result

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