Börskraschen på Wall Street hösten 1929 är en av alla tiders mest spektakulära ekonomiska händelser. Den är följaktligen flitigt omskriven, naturligt nog mest ur amerikanskt perspektiv. Här ska vi betrakta den ur svenskt perspektiv. Hur reagerade svenska nationalekonomer före, under och efter kraschen? Vår historia kretsar kring de tre ekonomer som var mest aktiva: Gustav Cassel, Bertil Ohlin och

High-order harmonic generation is a highly nonlinear, though inherently inefficient, process which can lead to emission of coherent, broadband extreme ultraviolet radiation in the form of attosecond pulses. Attosecond pulses are crucial for experiments investigating photoionization dynamics on the femto- and attosecond timescales. As attosecond research tends towards increasingly complex light-mat

Geological time is by many geoscience instructors considered a threshold concept for geoscience students, being a central concept for how we experience geosceince phenomena that takes place on a spatio-temporal scale ranging from micro (e.g. cloud formation) to macro (e.g. plate tectonics). If one wishes to understand geoscience phenomena that goes beyond human perception, one must move from the cGeological time is by many geoscience instructors considered a threshold concept for geoscience students, being acentral concept for how we experience geosceince phenomena that takes place on a spatio-temporal scale rangingfrom micro (e.g. cloud formation) to macro (e.g. plate tectonics). If one wishes to understand geoscience phenomenathat goes beyond human perception, one must move from the conc

Wetland area has decreased dramatically compared with preindustrial times, and in manyagricultural areas almost all wetlands have been drained to gain cropland. The trend hasin recent years been reversed because society has realized the many benefits of wetlandfunctions, such as for nutrient retention and flood control. In this study we inventoried 75 wetlands in Uppland and Halland for insects an

Today, huge amounts of data are produced, collected, and presented in all kinds of contexts. The ability to critically examine and evaluate information and arguments in relation to empirical evidence is often referred to as information literacy. It is of utmost importance that students are adequately scaffolded to develop this ability, to be able to become democratic citizens. The study presented

Diversifying cropping systems by increasing the number of cash and cover crops in crop rotation plays an important role in improving resource use efficiency and in promoting synergy between ecosystem processes. The objective of this study was to understand how the combination of crop diversification practices influences the performance of arable crop sequences in terms of crop grain yield, crop an

What information is encoded in the cries of human babies? While it is widely recognized that cries can encode distress levels, whether cries reliably encode the cause of crying remains disputed. Here, we collected 39201 cries from 24 babies recorded in their homes longitudinally, from 15 days to 3.5 months of age, a database we share publicly for reuse. Based on the parental action that stopped th

This paper provides an overview of the Neurigona species found in Iran. During our studies in northern Iran four species of the genus Neurigona Róndani, 1856 have been collected, three of which for the first time in Iran: Neurigona helva Negrobov & Tsurikov, 1990, Neurigona pallida (Fallén, 1823) and Neurigona pseudolongipes Negrobov, 1987. One species, Neurigona persiana Pollet & Kazerani

Three different circulation mechanisms are analyzed: 1) through-flow of a river; 2) wind generated oscillations; and 3) convective currents induced by heat flow from the bottom sediments. The through-flow takes place between the ice and a depth, which is mainly determined by the conditions at the inlet of the river into the lake. Just below this depth there is a sharp thermocline. The water mass b

A conversational program, MAGROR, for storm water run-off is described. Such programs are necessary for practical engineering purposes related to storm water run-off. The program will assess storm water run-off and recommend optimal pipe dimensions. The program has an automatic capability. The principle of a connecting system for run-off piping is shown schematically. Theoretical considerations ar

Ice observations were made in the Rane River 1974-1978. Observations of formation of ice, growth of ice, critical velocities, hydrodynamic stability, supercooled water, ice production in rapids and breakup were theoretically analyzed. Depending on the water velocity an ice cover formed after 40-100 negative °C-degree-days. The growth of ice took place at a static growth when the water velocity was

While prior research has gleaned important insight into consumers’ social media engagement, an important literature-based tension exists that warrants further attention. On the one hand, females are increasingly empowered (e.g., through their rising spending power). On the other hand, advertising-based gender stereotypes persist, thus limiting female consumers’ empowerment and decelerating adverti