Sökning: "stability indicators"

Visar resultat 1 - 5 av 43 avhandlingar innehållade orden stability indicators.

  1. 1. Long-term Environmental Problems, Economic Measures and Physical Indicators

    Författare :Christian Azar; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; stability analysis; discounting; environmental debt; sustainability; intergenerational; weight factors; population dynamics; the greenhouse effect; economics; indicators;

    Sammanfattning : This thesis consists of five papers and an introduction dealing with various aspects of the use of environmental resources. In both Paper I, The marginal cost of CO2 emissions, and Paper II, Discounting and distributional considerations in the context of global warming, we analyse the economics of the greenhouse effect. LÄS MER

  3. 2. Socio-Ecological Principles and Indicators for Sustainability

    Författare :John Holmberg; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; harvesting; principles; sustainability; environmental debt; indicators;

    Sammanfattning : In this thesis I have developed science-based description models, concepts, measures and methods for use in the transformation of the societal metabolism towards sustainability. The thesis is based on five papers: In Paper I, we analyse various factors that are important for the design of socio-ecological indicators. LÄS MER

  4. 3. On Stability and Surge in Turbocharger Compressors

    Författare :Bertrand Kerres; Andreas Cronhjort; Mihai Mihaescu; Jörg Seume; KTH; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Turbocharger; Radial Compressor; Stability; Surge; Hurst exponent; Fractals; Machine Design; Maskinkonstruktion;

    Sammanfattning : Turbochargers are used on many automotive internal combustion engines to increase power density. The broad operating range of the engine also requires a wide range of the turbocharger compressor. At low mass flows, however, turbo compressor operation becomes unstable and eventually enters surge. LÄS MER

  5. 4. The Effect of Different Perturbations on the Stability Analysis of Light Water Reactors

    Författare :Victor Dykin; Chalmers tekniska högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; NATURVETENSKAP; NATURAL SCIENCES; BWR and PWR stability; stability indicators; propagating density perturbation; autocorrelation function; density wave oscillations; decay ratio; non-white driving force; damped harmonic oscillator; reduced order models; Green s function technique;

    Sammanfattning : Neutron noise analysis techniques are studied and developed, with primary useof determining the stability of Boiling Water Reactors (BWRs). In particular, the role ofa specific perturbation prevailing in Light Water Reactors, the propagating densityperturbation, in the stability of BWRs and on the noise field of LWRs in general, isinvestigated by considering three topics. LÄS MER

  7. 5. Science mapping and research evaluation : a novel methodology for creating normalized citation indicators and estimating their stability

    Författare :Cristian Colliander; Rickard Danell; Olle Persson; Jesper Schneider; Umeå universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; document-document similarity; science mapping; citation analysis; citation normalization; stability analysis; citation impact; research evaluation; library and information science; biblioteks- och informationsvetenskap;

    Sammanfattning : The purpose of this thesis is to contribute to the methodology at the intersection of relational and evaluative bibliometrics. Experimental investigations are presented that address the question of how we can most successfully produce estimates of the subject similarity between documents. LÄS MER