| 1. |
- Balzamo, Elena
(författare)
-
"Den skönaste utsikt ..." : minnen från mitt vistande i Afrika II: Alger 1826, 1827, 1828 och 1829
- 2021
-
Bok (refereegranskat)abstract
- Julius Lagerheim (1786-1868) tjänstgjorde som svensk-norsk generalkonsul i Alger, där han vistades mellan 1826 och 1829, just innan staden intogs av franska trupper och koloniseringen av landet började. Hans berättelse utgör ett fängslande vittnesmål om det kritiska diplomatiska läget, om landet och dess invånare, om konflikter och nöjen, fest och vardag, och mycket mer
|
|
| 2. |
|
|
| 3. |
- Verheijen, Hendricus, 1989-
(författare)
-
Factors regulating the origin and magnitude of carbon dioxide emissions from high-latitude lakes
- 2022
-
Doktorsavhandling (övrigt vetenskapligt/konstnärligt)abstract
- Lake ecosystems receive, transmit and process terrestrial carbon and thereby link terrestrial, aquatic and global carbon cycles. Most lakes evade CO2 to the atmosphere, but the annual magnitude of CO2 evasion, as well as sources and mechanisms underpinning CO2 evasion from lakes are still largely unresolved. CO2 evasion from lakes can be sourced from direct external input from the catchment, but CO2 can also be produced in-lake from organic carbon breakdown. Both sources have been shown to be of importance to individual systems, but a landscape perspective is still missing. Globally, most lakes are in northern high latitudes, but due to infrequent seasonal sampling the magnitude of CO2 evasion on an annual scale is largely unknown, as are constraining variables of in-lake metabolism (i.e. production and consumption of CO2). As a consequence of these knowledge gaps, there is little possibility to predict future lake carbon cycling, for instance due to changing dissolved organic carbon (DOC) input or lake temperature resulting from global warming.In this thesis I aim to resolve these knowledge gaps surrounding the magnitude, cycling and sources of CO2 evasion from high-latitude (mainly arctic) lakes. By combining the estimates of annual CO2 evasion and metabolism, I investigated the magnitude of CO2 evasion, as well as the contribution of the internal carbon processing to CO2 evasion. Inclusion of ice-melt evasion allows to assess the importance, and drivers, of ice-melt CO2 evasion on the annual scale. Furthermore, by pooling lakes from multiple different lake surveys I was able to analyse the lake and landscape variables associated with high-latitude lake metabolism. Finally, through use of an experimental pond facility I manipulated dissolved organic carbon input and temperature to explore the effects of future climate conditions on lake carbon cycling and CO2 evasion.I found that both external input and internal CO2 production can contribute to CO2 evasion from lakes, but it is often dominated (>75%) by a single source and forest cover increased the amount to which the internal source contributed to annual CO2 evasion. I also found that the concentration of DOC in the lakes was inversely correlated to the proportion of CO2 lost at ice-melt. As a result, the ice-melt season is of significant importance to the annual CO2 evasion from low DOC high-latitude lakes, and omission can underestimate the magnitude of annual CO2-evasion by ~50%. Metabolism in these types of clear-water, low nutrient systems is dominated by benthic (on the sediment) production. Consequently, in-lake metabolism in these high-latitude clear-water lakes is largely constrained by lake depth and basin shape, and the potential for ice-scouring to disturb the benthic system in littoral areas. Convex lakes with predominantly shallow sediments were thus less productive compared to concave lakes where benthic production is less affected by ice-scouring. Finally, increasing DOC inputs (e.g. as a result of changes in climatic conditions) positively related to the amount of CO2 produced within and evaded from the lakes. However, warming was found to decrease in-lake CO2 production and evasion, potentially via increased nutrient limitation of carbon mineralization (i.e. more energy expanded for nutrient uptake in order to break down organic carbon in warmer water), and changes in community structure (e.g. different macrophytes). This thesis thus clearly outlines the annual magnitude (both open water and the specific importance of ice-melt), source contribution (quantified for many lakes rather than single systems) as well as the lake and landscape factors of note to source contribution (i.e. forest cover and DOC input increased internal cycling, especially in shallow and concave systems). Taken together, the results advance understanding the mechanisms behind cycling and evasion of CO2 in earth’s most common lake type.
|
|
| 4. |
- Zalkalns, Lilita, 1955-
(författare)
-
Brīvība kā trimdas sociāldemokrātu politiskā balss - pirmie gadi (1948-1954): īss ieskats : Brīvība (Freedom) as the political voice of Latvian Social Democrats in exile - the first years (1948-1954): a short insight
- 2020
-
Ingår i: Akadēmiskā Dzīve. - : University of Latvia. - 0516-3145. ; :56, s. 71-79
-
Tidskriftsartikel (refereegranskat)abstract
- Brīvība (Freedom) as the political voice of Latvian Social Demoracts in exile, first years (1948-1954): a short insightBrīvība (Freedom) was the monthly newsletter of the exile Latvian Social Democratic Workers’ Party (LSDSP), a newsletter which was established in Sweden in 1945. At first Brīvība was published as an annual journal, with issues in 1948, 1949 and 1950. As the official voice of the party, it defended the view that the exile community should unite under the last speaker of the democratic Latvian parliament and that exiles should not follow the lead of the Latvian Ambassador in London, who had been assigned extraordinary powers in 1940 by the authoritarian Latvian government. LSDSP support for the “parliamentarians” and its progressive stand points on other political matters were not popular among the mainly conservative Latvian exiles. Moreover, the aggressive journalistic style of the first Brīvība issues was not helpful in attracting new party members or more subscribers. From July 1950 to the end of 1953, Brīvība was issued as an internal party newsletter. It also actively recruited party members among Latvian exile communities and sought to widen its readership. In 1954, Brīvība resumed publication as a monthly newsletter. The newsletter presented typical social democratic standpoints on global politics and uniquely LSDSP views on exile Latvian politics. However, the parliamentarian controversy was no longer at the forefront and the journalistic tone had mellowed. Almost at the same time, a major rightwing exile Latvian politician, Alfrēds Valdmanis, was sentenced by a Canadian court to four years’ imprisonment for fraud and extortion, which meant that the rightwing authoritarians in exile lost their leading figure. These may be some of the main factors why Brīvība succeeded in expanding its readership and was able to continue publication outside of Latvia until 1999, thereby retaining its importance in exile Latvian politics.
|
|
| 5. |
|
|
| 6. |
- Murgovski, Nikolce, 1980, et al.
(författare)
-
Cooperative energy management of automated vehicles
- 2016
-
Ingår i: Control Engineering Practice. - : Elsevier BV. - 0967-0661 .- 1873-6939. ; 57, s. 84-98
-
Tidskriftsartikel (refereegranskat)abstract
- This paper presents a cooperative adaptive cruise controller that controls vehicles along a planned route in a possibly hilly terrain, while keeping safe distances among the vehicles. The controller consists of two predictive layers that may operate with different update frequencies, horizon lengths and model abstractions. The top layer plans kinetic energy in a centralized manner by solving a quadratic program, whereas the bottom layer optimizes gear in a decentralized manner by solving a dynamic program. The efficiency of the proposed controller is shown through several case studies with different horizon lengths and number of vehicles in the platoon.
|
|
| 7. |
- Samils, Nicklas, et al.
(författare)
-
The Socioeconomic Impact of Truffle Cultivation in Rural Spain
- 2008
-
Ingår i: Economic Botany. - : Springer Science and Business Media LLC. - 0013-0001 .- 1874-9364. ; 62:3, s. 331-340
-
Tidskriftsartikel (refereegranskat)abstract
- The Socioeconomic Impact of Truffle Cultivation in Rural Spain. Commercial black truffle (Tuber melanosporum) plantations have been promoted in Europe with the intention of benefiting rural economies while conserving biodiversity through the expansion of oak woodlands. In this context, a socioeconomic study was conducted around the town of Sarrion in eastern Spain, where government subsidies have supported oak reforestation and truffle cultivation in unproductive hilly areas since 1987. Currently there are about 4,500 ha of truffle orchards in the surrounding county and 530 members in the local truffle association, which has provided a key forum for truffle cultivators to share technical, financial and administrative experiences. Structured interviews were carried out in 2002 with a number of orchard owners, as well as representatives of financial and governmental institutions. Truffles, which are harvested using trained dogs, typically fetch local cultivators average prices of 220-670 EUR/kg, although retail prices of high-quality specimens may reach twice this amount. In addition to the direct economic impact, an increase in local land prices was also documented, as well as a tendency for continued expansion of truffle orchards, and thus oak reforestation. In conclusion, the promotion of truffle cultivation through autonomous community and provincial government subsidies, in conjunction with support by local banks, a dedicated local truffle association, and growing interest on behalf of local farmers, seems to have achieved the mutual goals of biodiversity conservation and improving the rural economy in this region of Spain.
|
|
| 8. |
|
|
| 9. |
|
|
| 10. |
- Baumann, Markus, et al.
(författare)
-
Double Standards : The Role of Gender and Intraparty Politics in Swedish Cabinet Appointments
- 2019
-
Ingår i: Politics and Gender. - : CAMBRIDGE UNIV PRESS. - 1743-923X .- 1743-9248. ; 15:4, s. 882-911
-
Tidskriftsartikel (refereegranskat)abstract
- Are female politicians less likely to be promoted to specific ministerial posts, and is it important for them to toe the party line? This article focuses on whether the selection of ministers has a gender-specific dimension. Building on role congruity theory and research showing that female and male politicians are evaluated in a different manner in leadership positions, we present some original hypotheses. For example, we hypothesize that female politicians are less likely to be appointed to cabinet when they have held gender-incongruent committee positions in parliament. We also hypothesize that women are less likely to be appointed to cabinet posts when they have previously deviated from the party line. In an empirical analysis of Swedish ministerial appointments in six cabinets, we find that female politicians were less likely to be appointed to cabinet posts when they have held positions in 'masculine' parliamentary committees and when they deviated from the party line in their parliamentary speeches. These results suggest that women are more harshly judged when holding positions that are not in line with traditional gender stereotypes and have important implications for our understanding of gender and political leadership.
|
|
