| 1. |
- Berg, Anne, 1981-, et al.
(författare)
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Begäret efter att se på historia
- 2023
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Ingår i: Historisk Tidskrift. - : Svenska Historiska Föreningen. - 0345-469X .- 2002-4827. ; 143:4, s. 501-503
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 2. |
- Berg, Anne, et al.
(författare)
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Begäret efter att se på historia
- 2023
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Ingår i: Historisk tidskrift. - : Svenska Historiska Föreningen. - 0345-469X .- 2002-4827. ; 143:4, s. 501-503
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 3. |
- Berg, Anne, 1981-, et al.
(författare)
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Behövs egentligen Historisk tidskrift?
- 2023
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Ingår i: Historisk Tidskrift. - : Svenska Historiska Föreningen. - 0345-469X .- 2002-4827. ; 143:3, s. 287-288
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 4. |
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| 5. |
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| 6. |
- Berg, Anne, 1981-, et al.
(författare)
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Redaktörerna [sic!] har ordet
- 2023
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Ingår i: Historisk Tidskrift. - : Svenska Historiska Föreningen. - 0345-469X .- 2002-4827 .- 0018-263X .- 1504-2944. ; 143:2, s. 135-136
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Tidskriftsartikel (övrigt vetenskapligt/konstnärligt)
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| 7. |
- Birkhofer, Klaus, et al.
(författare)
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Long-term organic farming fosters below and aboveground biota: Implications for soil quality, biological control and productivity
- 2008
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Ingår i: Soil Biology & Biochemistry. - : Elsevier BV. - 0038-0717. ; 40:9, s. 2297-2308
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Tidskriftsartikel (refereegranskat)abstract
- Organic farming may contribute substantially to future agricultural production worldwide by improving soil quality and pest control, thereby reducing environmental impacts of conventional farming. We investigated in a comprehensive way soil chemical, as well as below and aboveground biological parameters of two organic and two conventional wheat farming systems that primarily differed in fertilization and weed management strategies. Contrast analyses identified management related differences between "herbicide-free" bioorganic (BIOORG) and biodynamic (BIODYN) systems and conventional systems with (CONFYM) or without manure (CONMIN) and herbicide application within a long-term agricultural experiment (DOK trial, Switzerland). Soil carbon content was significantly higher in systems receiving farmyard manure and concomitantly microbial biomass (fungi and bacteria) was increased. Microbial activity parameters, such as microbial basal respiration and nitrogen mineralization, showed an opposite pattern, suggesting that soil carbon in the conventional system (CONFYM) was more easily accessible to microorganisms than in organic systems. Bacterivorous nematodes and earthworms were most abundant in systems that received farmyard manure, which is in line with the responses of their potential food sources (microbes and organic matter). Mineral fertilizer application detrimentally affected enchytraeids and Diptera larvae, whereas aphids benefited. Spider abundance was favoured by organic management, most likely a response to increased prey availability from the belowground subsystem or increased weed coverage. In contrast to most soil-based, bottom-up controlled interactions, the twofold higher abundance of this generalist predator group in organic systems likely contributed to the significantly lower abundance of aboveground herbivore pests (aphids) in these systems. Long-term organic farming and the application of farmyard manure promoted soil quality, microbial biomass and fostered natural enemies and ecosystem engineers, suggesting enhanced nutrient cycling and pest control. Mineral fertilizers and herbicide application, in contrast, affected the potential for top-down control of aboveground pests negatively and reduced the organic carbon levels. Our study indicates that the use of synthetic fertilizers and herbicide application changes interactions within and between below and aboveground components, ultimately promoting negative environmental impacts of agriculture by reducing internal biological cycles and pest control. On the contrary, organic farming fosters microbial and faunal decomposers and this propagates into the aboveground system via generalist predators thereby increasing conservation biological control. However, grain and straw yields were 23% higher in systems receiving mineral fertilizers and herbicides reflecting the trade-off between productivity and environmental responsibility. (C) 2008 Elsevier Ltd. All rights reserved.
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| 8. |
- Brath, Manfred, et al.
(författare)
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Microwave and submillimeter wave scattering of oriented ice particles
- 2020
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Ingår i: Atmospheric Measurement Techniques. - : Copernicus GmbH. - 1867-1381 .- 1867-8548. ; 13:5, s. 2309-2333
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Tidskriftsartikel (refereegranskat)abstract
- Microwave (1-300GHz) dual-polarization measurements above 100GHz are so far sparse, but they consistently show polarized scattering signals of ice clouds. Existing scattering databases of realistically shaped ice crystals for microwaves and submillimeter waves (> 300GHz) typically assume total random orientation, which cannot explain the polarized signals. Conceptual models show that the polarization signals are caused by oriented ice particles. Only a few works that consider oriented ice crystals exist, but they are limited to microwaves only. Assuming azimuthally randomly oriented ice particles with a fixed but arbitrary tilt angle, we produced scattering data for two particle habits (51 hexagonal plates and 18 plate aggregates), 35 frequencies between 1 and 864GHz, and 3 temperatures (190, 230 and 270K). In general, the scattering data of azimuthally randomly oriented particles depend on the incidence angle and two scattering angles, in contrast to total random orientation, which depends on a single angle. The additional tilt angle further increases the complexity. The simulations are based on the discrete dipole approximation in combination with a self-developed orientation averaging approach. The scattering data are publicly available from Zenodo (https://doi.org/10.5281/zenodo.3463003). This effort is also an essential part of preparing for the upcoming Ice Cloud Imager (ICI) that will perform polarized observations at 243 and 664GHz. Using our scattering data radiative transfer simulations with two liquid hydrometeor species and four frozen hydrometeor species of polarized Global Precipitation Measurement (GPM) Microwave Imager (GMI) observations at 166GHz were conducted. The simulations recreate the observed polarization patterns. For slightly fluttering snow and ice particles, the simulations show polarization differences up to 11K using plate aggregates for snow, hexagonal plates for cloud ice and totally randomly oriented particles for the remaining species. Simulations using strongly fluttering hexagonal plates for snow and ice show similar polarization signals. Orientation, shape and the hydrometeor composition affect the polarization. Ignoring orientation can cause a negative bias for vertically polarized observations and a positive bias for horizontally polarized observations.
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| 9. |
- Ekelund, Robin
(författare)
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Connective Memory
- 2023
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Ingår i: The Palgrave Encyclopedia of Memory Studies. - : Palgrave Macmillan. - 9783030937898
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Bokkapitel (refereegranskat)abstract
- The concept of connective memory highlights how memories are shaped by connections between people, objects, media, and institutions. It derives from the growing discussions on how technological and digital developments affect contemporary memory culture and, in particular, from Andrew Hoskins’ conceptualization of a “connective turn” and a “new memory ecology.” Connective memory is both a methodological and an analytical tool as it inspires memory studies to explore memory by tracing and analyzing how different interactional trajectories intersect with and compete against each other. The concept is thusly designed to challenge ideas of “individual memories” and the binaries of individual and collective and active and passive. Even though the concept of connective memory is closely tied to technological and digital developments, it is important to note that it inspires memory research to investigate both online and offline connections. Connective memory has also been an influential concept in José van Dijck’s more wide-ranging conceptualization of a “culture of connectivity.” Her conceptualization not only engages with remembering but also deals with the connected society as a whole, and it provides a critical perspective on technology and social media platforms.
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| 10. |
- Ekelund, Robin, et al.
(författare)
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En empirisk historia [An empirical history]
- 2022
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Ingår i: Historisk Tidskrift. - : Svenska Historiska Föreningen. - 0345-469X .- 2002-4827. ; 142:3, s. 307-319
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Tidskriftsartikel (refereegranskat)
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