Filtyp
A novel formulation of the theory of parent-offspring conflict is proposed. The basis of this formulation is an application of traditional life-history theory in combination with simple genetic arguments. The advanatage with this approach is conceptual, and the formulation is not in variance with earlier studies in the area. Parent-offspring conflict is, in our forumlation, not seen as a conflict
In polygynous passerines, males of some species provide food for their nestlings, but male incubation seems to be rare. In the European starling both the mating system and the extent to which males help with incubation vary. This enabled the relationship between mating system and male incubation to be investigated. The extent to which males provided care to a particular nest depended on mating sta
Males should invest in mate attraction, mate guarding and paternal care in relation to the marginal fitness value of each of those behaviours. Since time and energy are limited, trade-offs between these activities are expected. This study demonstrates that monogamous male European starlings (Sturnus vulgaris) decrease their paternal effort in response to increased opportunities to attract addition
In altricial birds, growth rates and nestling morphology vary between broods. For natural selection to produce evolutionary change in these variables, there must exist heritable variation. Since nestling traits are not any longer present in parents, traditional offspring-parent regressions cannot estimate heritabilities of these. In this study, a partial cross-fostering experiment was performed, w
The extent to which male birds in polygynous species with biparental care assist in nestling feeding often varies considerably between nests of different mating status. Both how much polygynous males assist and how they divide their effort between nests may have a profound effect on the evolution of mating systems. In this study we investigated how males in the facultatively polygynous European st
New visionary concepts need to be created to enhance the pursuit of sustainable development at a global scale, to respond to policies and international multilateral agreements in line with political commitments already made (like the Millennium Development Goals) and innovative approaches are called for to ensure the coherence of integrated policy-making at EU level.
The upcycling trend has received renewed attention in the past few years due to growing concerns for the environment related to increased resource consumption and waste volumes. Indeed, cities across the world are supporting resource upcycling initiatives by establishing do-it-yourself (DIY) repair cafes and makerspaces as a means to transform societies towards sustainable develop-ment. However, t
Vägar slits konstant och kräver konstant förbättringar och ombyggnationer. För att möjliggöra detta krävs personer som befinner sig ute på vägarna. Tekniken har gått framåt inom området trafiksäkerhet men skulle behöva förbättras ytterligare om vägarbetare ska vara säkra på sin arbetsplats. Även trafiken har förändrats över åren. Idag finns fler fordon på vägarna än aldrig förr. Bilarna är säkrareRoads are constantly worn down and demands improvements and reconstructions. To make this possible there has to be road workers on the road. Road safety has been improved along the years but can still be improved more. Today there are more vehicles on the road than ever before. The cars are more safe and therefore is encouraging to higher speeds as they are driven together with all safety features
In this paper we show that several metals, elements and energy resources are about to run into scarcity within the next decades, and most elements within some centuries. A new global systems model was assembled to analyse this scarcity as a continuation of the model used in the Limits-to-Growth World3 model. We show that this scarcity will lead to “peak wealth”, “peak population”, “peak costs”, “p
This paper provides a systemic analysis of complex dynamic issues associated with resource use, scarcity and efficiency by applying systems thinking with respect to sustainability criteria. Casual loop diagramming methodology is adopted to create a conceptual model to better understand the interconnected patterns, cause effect relations and feedbacks between the three dynamic complex systems that
The world supply and turnover of copper was modelled using simple empirical estimates and a COPPER systems dynamics model developed for this study. The model combines mining, trade markets, price mechanisms, population dynamics, use in society and waste as well as recycling, into a whole world system. The degree of sustainability and resource time horizon was estimated using four different methods
Agricultural fertilisation increases crop yields but can cause environmental damage, thus reductions in inorganic fertiliser application have been advocated. Farmer usage of phosphate rock has declined over the last decade, which may lead to soil nutrient depletion that undermines future crop production. We investigated the long-term (55 years) effects of eight different inorganic fertiliser regim
nytt dok 1 Instuderingsfrågor till Lena Halldenius’ Liberalism Obs. svaren lämnas inte in. 1. Vad är en ideologi? 2. Vad utmärker nyliberalismen eller libertarianismen? 3. Vilken är liberalismens människosyn? 4. I vilket förhållande står liberalismen till värderelativismen? 5. Vad är en genuin preferens, enligt Halldenius? 6. Vilken syn på frihet måste varje liberal acceptera? 7. Vad kallas den to
https://www.fil.lu.se/media/utbildning/dokument/kurser/FPRA11/20141/Instuderingsfrgor_Halldenius.pdf - 2026-06-26
Litt B18 HIS B18 VT 2012 Delkurs 1: Från manufaktur till industrialism 1850 till 1939 Block rörelse: Arbetare organiserar sig Berggren, Lars, Ångvisslans och brickornas värld : om arbete och facklig organisering vid Kockums Mekaniska Verkstad och Carl Lunds fabrik i Malmö 1840-1905, Malmö 1991, s 205-242, finns i klassuppsättning på bibliotek Blomberg, Eva Samhällets fiender. Stripakonflikten 1925
https://www.historiska.lu.se/media/utbildning/dokument/kurser/HISB18/20121/Litt_B18.pdf - 2026-06-26
The search for greener ways of producing plastic has been a very popular field for the last few years. One avenue of research focuses on separating plastic production from the fossil fuel industry by finding bio-based alternatives. This is the case of the research conducted by our collaborators at Biotechnology who are trying to use Escherichia coli to produce 1,4-butanediol, a precursor to many p
Bilingualism has become increasingly prevalent globally, with about half of the world's population being bilingual by 2012. This growing trend has prompted cognitive research to explore the effects of bilingualism on executive functions. The Bilingual Advantage (BA) theory posits that bilingual individuals experience enhanced cognitive abilities due to their practice in managing multiple langu
Within a UN Joint Programme titled “Enhancing the Capacity of Turkey to Adapt to Climate Change” a systems approach workshop was carried out in Adana, Turkey with broad stakeholder participation. The participants applied systems thinking approach, causal loop diagramming methodology and systems analysis to examine the potential impacts of projected climatic changes on natural ecosystems and socio-
Under perioder då ett företag ökar sitt likvida kapital ovanligt fort, tenderar dessa ofta att använda sig utav extra utdelningar. Detta som ett komplement till ordinarie utdelning med huvudsyfte att bevara nuvarande utdelningspolitik. Dessa kapitaltillskott vilka även benämns som special samt bonusutdelning, har dock effekten av att kunna påverka både värdering och avkastning. Men vilka är egentl
