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Linear-implicit versions of strong Taylor numerical schemes for finite dimensional Itô stochastic differential equations (SDEs) are shown to have the same order as the original scheme. The combined truncation and global discretization error of an gamma strong linear-implicit Taylor scheme with time-step delta applied to the N dimensional Itô-Galerkin SDE for a class of parabolic stochastic partial differential equation (SPDE) with a strongly monotone linear operator with eigenvalues lambda 1 <= lambda 2 <= ... in its drift term is then estimated by K(lambda N -½ + 1 + delta gamma) where the constant K depends on the initial value, bounds on the other coefficients in the SPDE and the length of the time interval under consideration.
AMS subject classifications: 35R60, 60H15, 65M15, 65U05.
Alternative education or teaching radicalism? New literature on Islamic education in Southeast Asia
(2009)
This review article focuses on three recent publications on Islamic education in Southeast Asia. While two are monographs on South Thailand and Myanmar/ Burma, one is a collection of essays on Indonesia, Malaysia, South Thailand, Cambodia, and the Southern Philippines. All works highlight local, regional and international educational networks, as well as their connections to the Indian subcontinent and the Middle East. Based chiefly on first-hand fieldwork, the works deliver an up-to-date and detailed picture of current discussions and developments regarding Islamic education in Southeast Asia. Key words Education ; Islam ; Southeast Asia ; Indonesia ; Malaysia ; Thailand ; Myanmar
Samples of freshly fallen snow were collected at the high alpine research station Jungfraujoch, Switzerland, during the Cloud and Aerosol Characterization Experiments (CLACE) 5 in February and March 2006. Sampling was carried out on the Sphinx platform. Headspace-solid-phase-dynamic extraction (HS-SPDE) combined with gas chromatography/mass spectrometry (GC/MS) was used to quantify C6–C10 n-aldehydes in the snow samples. The most abundant n-aldehyde was n-hexanal (median concentration 1.324 micro g L -1) followed by n-nonanal, n-decanal, n-octanal and n-heptanal (median concentrations 1.239, 0.863, 0.460, and 0.304 micro g L -1, respectively). A wide range of concentrations was found among individual snow samples, even for samples taken at the same time. Higher median concentrations of all n-aldehydes were observed when air masses reached Jungfraujoch from the north-northwest in comparison to air masses arriving from the southeast-southwest. Results suggest that the n-aldehydes detected most likely are of direct and indirect biogenic origin, and that they entered the snow through the particle phase.
Both, gas and particle scavenging contribute to the transport of organic compounds by ice crystals in the troposphere. To simulate these processes an experimental setup was developed to form airborne ice crystals under atmospheric conditions. Experiments were performed in a wall independent reactor (WIR) installed in a walk-in cold chamber maintained constantly at -20°C. Aerosol particles were added to the carrier gas of ambient air by an aerosol generator to allow heterogeneous ice formation. Temperature variations and hydrodynamic conditions of the WIR were investigated to determine the conditions for ice crystal formation and crystal growth by vapour deposition. In detail, the dependence of temperature variations from flow rate and temperature of the physical wall as well as temperature variations with an increasing reactor depth were studied. The conditions to provide a stable aerosol concentration in the carrier gas flow were also studied. The temperature distribution inside the reactor was strongly dependent on flow rate and physical wall temperature. At an inlet temperature of -20°C, a flow rate of 30 L•min exp -1 and a physical wall temperature of +5°C turned out to provide ideal conditions for ice formation. At these conditions a sharp and stable laminar down draft "jet stream" of cold air in the centre of the reactor was produced. Temperatures measured at the chamber outlet were kept well below the freezing point in the whole reactor depth of 1.0 m. Thus, melting did not affect ice formation and crystal growth. The maximum residence time for airborne ice crystals was calculated to at 40 s. Ice crystal growth rates increased also with increasing reactor depth. The maximum ice crystal growth rate was calculated at 2.82 mg• exp -1. Further, the removal efficiency of the cleaning device for aerosol particles was 99.8% after 10 min. A reliable particle supply was attained after a preliminary lead time of 15 min. Thus, the minimum lead time was determined at 25 min. Several test runs revealed that the WIR is suitable to perform experiments with airborne ice crystals.
Clio-online Guide Afrika
(2010)
Die Region Afrika nimmt im disziplinären Bereich der Geschichtswissenschaft eine Randposition ein. Daran hat auch die steigende Bedeutung im Kontext von "Global History" und Diaspora-Studien noch nichts geändert. Trotz der überschaubaren Infrastruktur gibt es interessante junge Projekte, die dem Bereich der digitalen Medien neue Impulse gegeben haben. Der Guide stellt neben den klassischen Literatur- und Volltextdatenbanken u.a. Bildarchive, Volltext-Harvester, Podcasts, Wikis und reine Open Access-Zeitschriften jeweils mit einem Schwerpunkt auf das sub-saharische Afrika vor.
Der Mediziner Prof. Charles Dinarello, 66, von der University of Colorado erhielt den mit 100 000 Euro dotierten Paul Ehrlich- und Ludwig Darmstaedter-Preis 2010. Der mit 60 000 Euro dotierte Paul Ehrlich-Nachwuchspreis ging an die Frankfurter Biologin Prof. Amparo Acker-Palmer, 41, vom Exzellenzcluster »Makromolekulare Komplexe« Frankfurt.
Blut-Untersuchungen ziehen sich wie ein roter Faden durch die verschiedenen Abteilungen des Frankfurter Instituts für Rechtsmedizin. Ob mit dem Skalpell, durch scharfsinnige Beobachtung oder Hightech-Laboranalytik: Spezialisierte Rechtsmediziner können einen Tathergang anhand von Blutspurenverteilungsmustern rekonstruieren, Toxikologen messen im Blut betäubende oder giftige Substanzen, Molekularbiologen ordnen Blutspuren über DNA-Profi le Personen zu und versuchen, mit molekulardiagnostischen Methoden unklare Todesursachen aufzuklären. Zwei konstruierte Todesfälle gewähren einen forensischen Blick auf das Blut.
Mit Blut unterzeichnete Dr. Faust seinen zweifelhaften Pakt mit dem Teufel. In der Kulturgeschichte des Menschen hat Blut von jeher eine mystisch aufgeladene Rolle gehabt, die sich in religiösen Ritualen, Heilpraktiken, Liebes- und Freundschaftsbünden niederschlug. Roland Prinzinger beginnt mit einigen Schlaglichtern auf die vielfältigen Bedeutungen des Blutes, die heute noch mitschwingen, wenn wir uns dem Thema nähern. Als Biologe erklärt er dann am Beispiel der Diagnostik bei Vögeln, warum Blut auch aus naturwissenschaftlicher Sicht ein »ganz besonderer Saft« ist.