Gewässeranschluss erosionsgefährdeter Flächen

Offsite-Schäden durch Bodenerosion, insbesondere die Gewässerbelastung, haben in der Erosionsforschung deutlich an Relevanz gewonnen. Damit man umweltwirksam und kosteneffizient Verminderungsmaßnahmen ergreifen kann, müssen gezielt die Flächen, die sowohl ein hohes Erosionsrisiko als auch einen Gewässeranschluss haben, identifiziert werden. Es wird ein einfaches Risikoab-schätzungstool präsentiert, welches die Ausscheidung von potentiell beitragenden Flächen (critical source areas) bezüglich Sedimenteintrag in die Gewässer der Schweiz ermöglicht.

Parton energy loss and momentum broadening at NLO in high temperature QCD plasmas

We present an overview of a perturbative-kinetic approach to jet propagation, energy loss, and momentum broadening in a high temperature quark–gluon plasma. The leading-order kinetic equations describe the interactions between energetic jet-particles and a non-abelian plasma, consisting of on-shell thermal excitations and soft gluonic fields. These interactions include ↔ scatterings, collinear bremsstrahlung, and drag and momentum diffusion. We show how the contribution from the soft gluonic fields can be factorized into a set of Wilson line correlators on the light-cone. We review recent field-theoretical developments, rooted in the causal properties of these correlators, which simplify the calculation of the appropriate Wilson lines in thermal field theory. With these simplifications lattice measurements of transverse momentum broadening have become possible, and the kinetic equations describing parton transport have been extended to next-to-leading order in the coupling g.

Trends of mean and extreme temperature indices since 1874 at low-elevation sites in the Southern Alps

We describe the recovery of three daily meteorological records for the southern Alps (Domodossola, Riva del Garda, and Rovereto), all starting in the second half of the nineteenth century. We use these new data, along with additional records, to study regional changes in the mean temperature and extreme indices of heat waves and cold spells frequency and duration over the period 1874–2015. The records are homogenized using subdaily cloud cover observations as a constraint for the statistical model, an approach that has never been applied before in the literature. A case study based on a record of parallel observations between a traditional meteorological window and a modern screen shows that the use of cloud cover can reduce the root-mean-square error of the homogenization by up to 30% in comparison to an unaided statistical correction. We find that mean temperature in the southern Alps has increased by 1.4°C per century over the analyzed period, with larger increases in daily minimum temperatures than maximum temperatures. The number of hot days in summer has more than tripled, and a similar increase is observed in duration of heat waves. Cold days in winter have dropped at a similar rate. These trends are mainly caused by climate change over the last few decades.

A new Stata command for computing and graphing percentile shares

Percentile shares provide an intuitive and easy-to-understand way for analyzing income or wealth distributions. A celebrated example is the top income shares sported by the works of Thomas Piketty and colleagues. Moreover, series of percentile shares, defined as differences between Lorenz ordinates, can be used to visualize whole distributions or changes in distributions. In this talk, I present a new command called pshare that computes and graphs percentile shares (or changes in percentile shares) from individual level data. The command also provides confidence intervals and supports survey estimation.

Na 1 Nachlass Max Horkheimer, 12 - Korrespondenzen u.a. mit Carl Dreyfuss (p. I 6, 184-311)

1 Brief von Max Horkheimer an die Zeitschrift The Dog's World, 05.06.1939; 5 Briefe zwischen John Dollard und Max Horkheimer, 1936-1938; 16 Briefe zwischen Josef Doppler und Max Horkheimer, 1934-1939; 2 Briefe zwischen Walter Dorn und Max Horkheimer, 27.09.1941, 24.03.1942; 2 Briefe zwischen Melvyn Douglas und Max Horkheimer, 02.03.1942, 18.12.1941; 34 Briefe zwischen Carl Dreyfuss und Max Horkheimer, 1937-1939; 1 Brief von der National City Bank of New York an den American Consul General London, 15.10.1937; 1 Brief und 2 Entwürfe von Max Horkheimer an den Americal Consul General London, 10.09.1937; 4 Briefe zwischen Walter Dubislav und Max Horkheimer, 1936, 02.10.1936; 3 Briefe zwischen A. E. Duncan-Jones und Max Horkheimer, 1938, 13.04.1938; 1 Brief von E. Duprée an Max Horkheimer, 04.02.1936; 2 Briefe zwischen Bonté Durán und Max Horkheimer, 15.04.1941;