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We analyze cross correlations between price fluctuations of different stocks using methods of random matrix theory (RMT). Using two large databases, we calculate cross-correlation matrices C of returns constructed from (i) 30-min returns of 1000 US stocks for the 2-yr period 1994-1995, (ii) 30-min returns of 881 US stocks for the 2-yr period 1996-1997, and (iii) 1-day returns of 422 US stocks for
Quantitative RT-PCR (QRT-PCR) enables the sensitive and specific detection of mRNA with a small copy number. We used the QRT-PCR method and dual-label analysis of amplification products for the detection of prostate-specific antigen (PSA) mRNA. The QRT-PCR assay employed a PSA-like internal standard (IS) mRNA, which was used to quantify the PSA mRNA copies and to control the variations during the
In this thesis two processes have been modeled and controlled, namely the plate thickness control and the slab temperature control. The classical solution for the thickness control problem can't handle asymmetric hardness variations and the estimation of the controlled output introduces stability problems. A nonlinear multivariable model for the thickness control system is derived. The parameters
The title compound, C18H10N2SSe, is a pentacyclic ring system folded along the S center dot center dot center dot Se vector. The central thiaselenine ring adopts a boat conformation and the two halves of the molecule are related by a crystallographic mirror plane.
En analys av Michael Hanekes konstnärskap, hans berättarteknik och teman.
Greater wax moths (Galleria mellonella L., Pyraloidea) use ultrasound sensitive ears to detect clicking conspecifics and echolocating bats. Pyralid ears have four sensory cells, A14. The audiogram of G. mellonella has best frequency at 60 kHz with a threshold around 47 dB sound pressure level. A1 and A2 have almost equal thresholds in contrast to noctuids and geometrids. A3 responds at + 12 to + 1
As a consequence of the development of psychiatric care in Sweden, occupational therapists have adapted their roles to changing practice settings. The aim of this study was to investigate the domain of concern of occupational therapists in psychiatric care, operationalized as perceived responsibilities. Furthermore, the relationships of the domain of concern to underlying theories and models, clin
A Dutch study is described, in which the occurrence of potentially detrimental parental actions induced by infant crying were assessed and thereafter related to various factors, including the parents’ judgment that the crying was »excessive«. A commentary in the same Lancet issue questions whether this might be interpreted as a »blaming of the victim« process. Official Swedish and international st
Popular Abstract in Swedish Vad innebär politik efter det internationella? Många samtida perspektiv på internationell politik konvergerar i synen på 'det internationella' som en överspelad idé, men divergerar i synen på vilken typ av politik som växer fram i dess ställe. Den moderna staten har varit avgörande för betydelsen av säkerhet, territorialitet och auktoritet - begrepp konstituerande för iWhat does a politics after the international mean? Many strands of contemporary scholarship converge on the image of the international as obsolete, but strongly diverge on the contours of the kinds of politics that are superseding it. The modern state has been pivotal to the meaning of security, territory and authority?concepts central to the idea of the international?but they do not necessarily h
Popular Abstract in Swedish Joniseringssensorn är en elektrisk sensor för diagnostik i förbränningsmotorer. Sensorn används idag för att till exempel detektera knack. Sensorn bygger på att energifrigörelsen i motorn leder till jonisering av olika ämnen, vilket betyder att gasens lednigsförmåga ökar. Detta kan mätas genom att lägga en spänning över tändstiftsgapet under förbränningen och registreraThe ionization sensor is an electrical probe for diagnostics in internal combustion engines. The combustion process affects the electrical properties of the gas in the cylinder. Thus the sensor signal contains copious information about the conditions in the combustion chamber. A thorough characterization of the sensor makes it possible to take advantage of a larger portion of this information for
In wastewater treatment plants (WWTPs) equipped with sludge digestion and dewatering systems, the reject water originating from these facilities contributes significantly to the nitrogen load of the activated sludge tanks, to which it is typically recycled. In this paper, the impact of reject water streams on the performance of a WWTP is assessed in a simulation study, using the Benchmark Simulati
The secondary metabolites of 150 specimens belonging to 29 species of Teloschistes were analysed with HPLC. Seven anthraquinones were detected of which parietin dominated with minor proportions of emodin, teloschistin, fallacinal and parietinic acid. The depsidones vicanicin, caloploicin, and isofulgidin occurred together with some compounds of unknown identity in varying proportions in T. flavica
The aim of this study was to investigate possible interactions between minerals and ectomycorrhizal (EM) mycelia. Fungal rhizomorphs growing in association with apatite and/or biotite were sampled both from a laboratory experimental system (Rhizopogon sp. and Pinus muricata) and from mesh bags buried in forest soil in the field. The elemental composition of the samples was analyzed with particle-i
