Sökning: "Time Diversification"

Visar resultat 21 - 25 av 95 avhandlingar innehållade orden Time Diversification.

  1. 21. Between crisis and opportunity : Livelihoods, diversification and inequality among the Meru of Tanzania

    Författare :Rolf Larsson; Sociologi; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Sociology of labour; Meru; Tanzania; Arusha; peasants; sociology of enterprise; family farmers; smallholders; coffee production; income diversification; de-agrarianisation; agricultural intensification; inequality; social differentiation; economic liberalization.; Sociology; Agricultural economics; Sociologi; Arbetslivssociologi; företagssociologi; Lantbruksekonomi;

    Sammanfattning : Sustained high population growth rates are radically altering the livelihood conditions for small farmers in sub-Saharan Africa. In one of the most fertile and densely settled areas of East Africa, Mount Meru in Northern Tanzania, the size of the population has increased nearly tenfold within the last century. LÄS MER

  3. 22. Genetic control of sensory neuron diversification

    Författare :Marina C M Franck; Karolinska Institutet; Karolinska Institutet; []
    Nyckelord :;

    Sammanfattning : The somatosensory system of vertebrates transmits information from external and internal environments to the brain. This information relates to various modalities such as touch, temperature, itch and pain. The different modalities require a variety of subtypes of sensory neurons, tuned to detect and transmit specific stimuli. LÄS MER

  4. 23. Palaeobiology and diversification of Proterozoic-Cambrian photosynthetic eukaryotes

    Författare :Heda Agić; Małgorzata Moczydłowska; Shuhai Xiao; Uppsala universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; microfossils; eukaryotes; Mesoproterozoic; Neoproterozoic; Cambrian; Ordovician; palaeobiology; biostratigraphy; phylogeny; China; Estonia; Siberian Platform; prasinophytes; microstructure; Raman spectroscopy; Earth Science with specialization in Historical Geology and Palaeontology; Geovetenskap med inriktning mot historisk geologi och paleontologi;

    Sammanfattning : One of the most important events in the history of life is the evolution of the complex, eukaryotic cell. The eukaryotes are complex organisms with membrane-bound intracellular structures, and they include a variety of both single-celled and multicellular organisms: plants, animals, fungi and various protists. LÄS MER

  5. 24. Evolution of host repertoires and the diversification of butterflies

    Författare :Mariana Pires Braga; Niklas Janz; Sören Nylin; Fredrik Ronquist; Alexandre Antonelli; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; coevolution; host-parasite interaction; inference; networks; zoologisk ekologi; Animal Ecology;

    Sammanfattning : All herbivorous insects are specialized to some extent to their host plants, but the level of specialization varies greatly. Insect-plant coevolution is often invoked to explain the large diversity of herbivorous insects, but the role of specialization during diversification is still controversial. LÄS MER

  7. 25. On the returns of trend-following trading strategies

    Författare :Christian Lundström; Tomas Sjögren; Jussi Nikkinen; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Bootstrap; Commodity Trading Advisor funds; Contraction-Expansion principle; Crude oil futures; Futures trading; Opening Range Breakout strategies; S P 500 futures; Technical analysis; Time series momentum; Time-varying market inefficiency; nationalekonomi; Economics;

    Sammanfattning : Paper [I] tests the success rate of trades and the returns of the Opening Range Breakout (ORB) strategy. A trader that trades on the ORB strategy seeks to identify large intraday price movements and trades only when the price moves beyond some predetermined threshold. LÄS MER