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Remote sensing of photosynthetic light-use-efficiency of Siberian boreal forest

The relationship between a physiological index called the photochemical reflectance index (PRI) and photosynthetic light-use-efficiency (LUE) of a Siberian boreal forest during the winter–spring transition, or green-up period, was investigated in 2000. During this time the photosynthetic apparatus was considered under stress as a result of extremes of temperature (from −20 to 35 °C) coupled with a

Scholarly publishing: one practice between the two systems of communication and academic meriting

The aim of this paper is to highlight and discuss the complexities of scholarly publishing being a practice closely relating to two different systems, the system of academic merit and the system of scholarly communication, by showing how the two systems work on different sets of logic and therefore needs to be analyzed in different ways and using different kinds of data. These complexities are dis

Evaluation of some integrals relevant to multiple scattering by randomly distributed obstacles

This paper analyzes and solves an integral and its indefinite Fourier transform of importance in multiple scattering problems of randomly distributed scatterers. The integrand contains a radiating spherical wave, and the two-dimensional domain of integration excludes a circular region of varying size. A solution of the integral in terms of radiating spherical waves is demonstrated. The method empl

Improvement in Time-domain IP Data Quality with Multi-electrode Systems by Separating Current and Potential Cables

Good quality time-domain IP data can be obtained using multi-electrode resistivity-IP equipment and standard electrode cable layouts at sites with favourable electrode contact. High contact resistances often result in low signal levels and capacitive coupling problems making the IP signals drown in noise. We tested an approach for measuring with separated cable spreads for current transmission and

Evolutionism har mörk historia

Sekularister använder gärna Darwin som slagträ mot meningsmotståndare med en religiös värdegrund. Men evolutionismens vetenskapshistoria är allt annat än ljus och dess förklaringsvärde ytterst begränsat vid analyser av kulturer och samhällen, skriver religionsantropologen Pierre Wiktorin vid Lunds universitet i ett svar till Birgitta Forsman (Aktuella frågor 11/2-2009).