Sökning: "collective diffusion"

Visar resultat 1 - 5 av 28 avhandlingar innehållade orden collective diffusion.

1. 1. Ages of liberty : social upheaval, history writing, and the new public sphere in Sweden, 1740-1792

   Författare :Peter Hallberg; Peter Burke; Stockholms universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; historiography; civil society; public sphere; public opinion; diffusion; collective; Political science; Statsvetenskap; Political Science; statsvetenskap;

   Sammanfattning : This dissertation investigates how different social groups used history as a political instrument in Sweden during the second half of the eighteenth century (1740-1792). More specifically, it analyzes how representations of the past were used to influence behavior, legitimize claims to power, mould opinion and forge collective identities. LÄS MER

3. 2. Mathematical modelling approach to collective decision-making

   Författare :Natalia Zabzina; Denis Gaidashev; Torbjörn Lundh; Uppsala universitet; []
   Nyckelord :collective behaviour; collective decision-making; communication mechanisms; positive feedback; mathematical modelling; bifurcation phenomena; steady state solutions; symmetry breaking; symmetry restoring; diffusion-limited aggregation; fractal dimension;

   Sammanfattning : In everyday situations individuals make decisions. For example, a tourist usually chooses a crowded or recommended restaurant to have dinner. Perhaps it is an individual decision, but the observed pattern of decision-making is a collective phenomenon. LÄS MER

4. 3. Nanoplasmonics for solar cells

   Författare :Viktoria Gusak; Chalmers tekniska högskola; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; enhanced near-field; adsorption; titanium dioxide; Localized Surface Plasmon Resonance; amorphous hydrogenated Silicon; diffusion; Langmuir kinetics; Dye-Sensitized Solar Cell; plasmonic nanoparticle; mesoporous material; diffusion-front model;

   Sammanfattning : The main source of our energy system, the fossil fuels, will eventually be depleted and also pose environmental and climate hazards. There is thus a need for alternative, renewable energy sources. Solar (photovoltaic) cells will play an important role as one of them. LÄS MER

5. 4. Lattice Boltzmann simulations of tracer diffusion in microswimmer suspensions

   Författare :Henrik Nordanger; Fysikalisk kemi; []
   Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Lattice Boltzmann; microswimmers; active matter; enhanced diffusion;

   Sammanfattning : Suspensions of microswimmers are a class of systems inherently out of equilibrium, due to the mechanical work continuously performed by a large number of active agents. Biological examples are plentiful, as many aquatic microorganisms have the ability to propel themselves. LÄS MER

7. 5. The Egyptian Uprising of 2011: Tracing the Role of the Cairo-Based Political Opposition

   Författare :Arne Wackenhut; Göteborgs universitet; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Arab Spring; Egypt; Egyptian revolution; contentious politics; diffusion; Middle East and North Africa; mobilization; social movements; social movement theory;

   Sammanfattning : It is the aim of this study to understand the mobilization process leading up to and the diffusion of collective contentious behavior during the Egyptian Uprising of 2011. Using process tracing and focusing on the role of the so-called Cairo-based political opposition, this study contributes to debates on social movement theory and contentious politics by elaborating on the causal mechanisms that facilitate mobilization and diffusion processes in periods of heightened social conflict. LÄS MER