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Feature quantization is a crucial component for efficient large scale image retrieval and object recognition. By quantizing local features into visual words, one hopes that features that match each other obtain the same word ID. Then, similarities between images can be measured with respect to the corresponding histograms of visual words. Given the appearance variations of local features, traditio
In this paper we consider the problem of linear quadratic regulator (LQR) performance for cascade control structures of series coupled systems. The necessary and sufficient condition for the linear quadratic performance of a cascade control structure to achieve the same performance as any given centralized LQR is obtained. The cascade problem could be seen as a special case of the network control
This work demonstrates how the structure of our Galaxy, the Milky Way, can be unveiled with the use of space astrometry. It consists of two parts, of which the first is a brief introduction to the fields of Galactic structure, covering the Galaxy's stellar constituents, how the Galaxy was formed and how it has evolved over time, both chemically and kinematically. Also the workings of space astrome
This paper presents a combined experiment and identification procedure, well suited to obtain low-order dynamic models of a patients’ response to continuous drug administration. The experiment requires no a priori information and is of very short duration. The identification method provides both a parametric low-order model, and an estimate of the parameter error covariance. It has been demonstrat
Gate-defined quantum devices in an InGaAs/InP heterostructure are achieved by introducing a HfO2 layer as the gate dielectric. The high-kappa layer is grown by atomic layer deposition and the fabrication process is described in detail. Electrical measurements at low temperature reveal the Coulomb blockade effect. Magnetotransport characterization is also carried out for the devices made from this
While low-density parity-check (LDPC) convolutional codes tend to significantly outperform LDPC block codes with the same processor complexity, large storage requirements and a long initial decoding delay are two issues related to their continuous pipeline decoding architecture [A. Jimenez Feltstrom et al., (1999)]. In this paper, we propose reduced complexity decoding strategies to lessen the sto
Significant faunal changes reported fromrecent, coastal environments,which are not directly influenced by urban and industrial impact, are rarely seen. In Gullmar Fjord on the Swedish west coast, a significant foraminiferal fauna change occurred in connectionwith severe low-oxygen conditions that evolved in thewinter of 1979/1980. A foraminiferal fauna marked by common Skagerrak–Kattegat species,
Popular Abstract in Swedish Bakgrund En grundförutsättning för detta avhandlingsarbete var att smärta i rörelseapparaten kan studeras som ett samlat begrepp. Med två undantag, fibromyalgi och reumatoid artrit, avstod vi därför från att beskriva smärtan utifrån specifika diagnoser. Detta förhållningssätt har stöd i den mest vedertagna definitionen av smärta, som arbetats fram av IASP (InternationaThe aim was to study prevalence, assessment methods, and risk factors of chronic musculoskeletal pain, as well as effects on health status in a general population setting. A postal survey to a representative sample of 3928 subjects aged 20–74 years in 2 municipalities on the west coast of Sweden was followed by clinical examinations of selected subjects, and a three-year follow up survey to 2425
Analysts are often asked to help deliver systems that have a great mix of performance and features. Unfortunately, problematic organizational gender related issues have sometimes been degraded and treated as unrelated to technological issues. While ISD in general is trying to ensure support for businesses, we might in the future expect more than just a gender-ignorant quality-measure in the way th
Popular Abstract in Swedish Populärvetenskaplig sammanfattning Personer som är deprimerade löper större risk att begå självmord än de som har andra psykiska störningar. Studier har visat att cirka 6-15% av alla patienter med affektiv sjukdom begår självmord. Vidare har det visat sig att cirka hälften av alla människor som tar livet av sig har haft en depression. Man har därför sökt efter riskfaktSuicide in Severe Depression. A Longitudinal Case-Control Study. The present thesis is based on a case-control study of suicide victims with a severe depression/ melancholia. All patients admitted to the Department of Psychiatry 1956-1969 who received this diagnosis on a multiaxial schedule (1206 patients) were followed up in two sessions to 1984 and to 1998 concerning suicide and general mortali
