We provide clear-cut evidence for economically and statistically significant multivariate jumps (multi-jumps) occurring simultaneously in stock prices by using a novel nonparametric test based on smoothed estimators of integrated variances. Detecting multi-jumps in a panel of liquid stocks is more statistically powerful and economically informative than the detection of univariate jumps in the mar

The essay studies the ways in which the Swedish Prime Minister, Per Albin Hansson, was mediated in the 1930s and 40s. In contrast to an existing belief that the medalization of politics didn't really evolve until the breakthough of television during the 1960s and 70s, it is suggested that this way of relating to politics existed at a significantly earlie stage of Swedish media history.

Popular Abstract in Swedish När ljus belyser ett material kan elektroner frigöras via en process som kallas den fotoelektriska effekten. Experiment utförda under slutet av 1800-talet visade att det inte är styrkan på ljuset som avgör om elektroner kan frigöras, det är istället ljusets färg. Rött ljus har en låg frekvens och blått ljus har en hög frekvens, men hur kan denna frekvens spela en så avgAttosecond science refers to physical processes that occur on the natural timescale of electron motion in atomic and molecular systems. Attosecond time resolution can be obtained experimentally through a process called high-order harmonic generation where sharp attosecond pulses are formed in the time domain. Attosecond pulse trains contain many attosecond pulses with a constant pulse-to-pulse s

Mean motion resonances are a common feature of both our own Solar system and of extrasolar planetary systems. Bodies can be trapped in resonance when their orbital semimajor axes change, for instance when they migrate through a protoplanetary disc. We use a Hamiltonian model to thoroughly investigate the capture behaviour for first- and second-order resonances. Using this method, all resonances of

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Popular Abstract in Swedish Bindväv är samlingsnamnet på de vävnader som bygger upp ben, brosk, senor, ligament, tänder, hud m.m. Bindväven utgör kroppens stomme och bidrar med stödjande och elastiska funktioner samt ger skydd åt kroppen både på utsidan och åt de inre organen. Det finns ganska få celler i bindväv jämfört med många andra vävnader i kroppen och det finns olika celltyper i olika sortThe properties of different connective tissues depend on the synthesis and assembly of macromolecular structures composed of collagen and other extracellular matrix components. Mechanisms modulating these events play important roles in the formation of a functional tissue. We have studied the role of collagen-binding extracellular matrix leucine-rich repeat glycoproteins/proteoglycans in the forma

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Cystatins A and C were both shown to inhibit cathepsin B by a two-step mechanism, involving an initial weak interaction followed by a conformational change. Disruption of the major salt bridge anchoring the occluding loop of cathepsin B to the main body of the enzyme by mutation of His110 to Ala converted the binding to an apparent one-step reaction. The second step of cystatin binding to cathepsi

Popular Abstract in Swedish Fysikalisk kemi är en gren inom naturvetenskapen som behandlar frågor kring molekylers fysiska och kemiska egenskaper, t.ex. i vilka ämnen molekylerna löser sig, vid vilken temperatur de förgasas eller hur de rör sig. Grundpelarna sägs vara struktur, jämvikt och förändring, d.v.s. hur fördelar sig molekylerna i ett medium och vilka krafter definierar slutresultatet och Aggregation in protein-surfactant systems have been studied with the ambition of reaching a deeper understanding of the balance of the interaction forces involved. A pure system with maximized electrostatic interactions has been used. The approach has been to use a step-wise sample preparation where initially a stoichiometric protein-surfactant salt is precipitated and freeze-dried. Secondly, the

This paper considers switching output feedback control of linear systems and variable structure systems. Theory for stability analysis and design for a class of observer-based feedback control systems is presented. A circle-criterion approach can be used to design an observer-based state feedback control which yields a closed-loop system with specified robustness characteristics. The approach is r