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Diode laser absorption measurements obtained with two-tone frequency-modulation spectroscopy (TTFMS) are combined with tomography to produce spatially resolved quantitative images of fluid flows. The high sensitivity, good accuracy, and high stability of TTFMS absorption measurements permit optical-absorption tomography to be performed with low noise on extremely weakly absorbing objects. The meth
The availability of three-dimensional structures of proteins has provided enormous insight into the detailed molecular machinery of the living cell. Since the late 1950s and early 1960s, experimental methods for deriving protein structures have contributed more than 30,000 entries to the Protein Data Bank, representing the collected knowledge of protein and other macromolecular structures. However
In very-large multiple-input multiple-output (MIMO) systems, the BS (base station) is equipped with very large number of antennas as compared to previously considered systems. There are various advantages of increasing the number of antennas, and some schemes would require handling large matrices for joint processing (pre-coding) at the base station. The dirty paper coding (DPC) is an optimal pre-
Abstract in Undetermined I Antoinette Hetzlers senaste bok, Delaktighet under hot, presenteras en inträngande studie av avstämningsmötet som utredningstekniskt hjälpmedel för Försäkringskassan. Professor Hetzler visar övertygande att även detta nya sätt att arbeta med långa sjukfall har misslyckats; sjukfallen blir inte kortare och antalet långtidssjuka som återgår i ordinarie arbete blir inte stö
Abstract in German Die "Kleinen Historien" bildete zwischen dem 16. und dem 19. Jahrhundert eine eigene Gattung auf dem Buchmarkt, die weder geschlossen noch statisch war. Die "Kleinen Historien" wurden in Oktav gedrucht, innerhalb dieses starren Formats jedoch veränderten sie im Laufe der Zeit ihre Form, und die Texte wurden dann der neuen Form angepasst. Wie das vonstatten ging, wird anhand der
Abstract in UndeterminedA dual purpose, high power, off board battery charger for electric vehicles is presented. For higher viability and increased usage of the charger, grid conditioning capabilities are included in the concept. Conventional power electronic converter topologies are used in a new application, which combines fast EV battery charging with active filtering. Furthermore bi-direction
A review. Gels formed from milk by renneting or acidification under quiescent conditions may subsequently show syneresis, i.e., expel liq. (whey), because the gel (curd) contracts. In making cheese from renneted or acidified milk, syneresis is an essential step. Consequently, it is useful to understand and quant. describe syneresis as a function of milk properties and process conditions, particula
We develop a parametric high-resolution method for the estimation of the frequency nodes of linear combinations of complex exponentials with exponential damping. We use Kronecker's theorem to formulate the associated nonlinear least squares problem as an optimization problem in the space of vectors generating Hankel matrices of fixed rank. Approximate solutions to this problem are obtained by usin
In this paper, we have investigated the use of virtual antenna arrays at the receiver to do single antenna direction-of-arrival estimation. The array coordinates are obtained by doing simple dead reckoning using acceleration and angular speed measurements from a low cost micro-electro-mechanical system inertial measurement unit (IMU). The proposed solution requires no extra hardware in terms of re
Convolutional codes is one possibility when there is a need for error-correcting codes in communication systems. Using convolutional codes over rings is a relatively new approach. When coding is used in combination with, for example, phase-shift keying, codes over rings constitue a natural choice as the symbols in the code alphabet have a natural signal point interpretation. This thesis reports on
A large number of studies carried out on pupils aged 8–14 have shown that teachable agent (TA) based games are beneficial for learning. The present pioneering study aimed to initiate research looking at whether TA based games can be used as far down as preschool age. Around the age of four, theory of mind (ToM) is under development and it is not unlikely that a fully developed ToM is necessary to
