Sökning: "search behavior"

Visar resultat 16 - 20 av 143 avhandlingar innehållade orden search behavior.

  1. 16. Hyperoxia avoidance and aggregation behavior in C. elegans

    Författare :Annelie Persson; Göteborgs universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; c. elegans; aggregation;

    Sammanfattning : Living in the soil, C. elegans can move in three dimensions in search for food. To navigate, it partly uses oxygen levels as a description of its habitat. Oxygen tension may indicate presence of microbial food and location with respect to the surface, where oxygen is 21%. LÄS MER

  3. 17. IMPROVING DIFFERENTIAL EVOLUTION WITH ADAPTIVE AND LOCAL SEARCH METHODS

    Författare :Miguel Leon; Ning Xiong; Peter Funk; Yigen Zenlander; Kristian Sandström; Mälardalens högskola; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Differential Evolution; Adaptation; Memetic algorithm; Evolutionary Algorithm; Computer Science; datavetenskap;

    Sammanfattning : Differential Evolution (DE) is a population-based algorithm that belongs to the Evolutionary algorithm family. During recent years, DE has become a popular algorithm in optimization due to its strength solving different types of optimization problems and due to its easy usage and implementation. LÄS MER

  4. 18. Employment Dynamics

    Författare :Karolina Stadin; Nils Gottfries; Bertil Holmlund; Eran Yashiv; Uppsala universitet; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Employment dynamics; Labor demand; Matching; Vacancies; Unemployment; Business cycle; Firm behavior; Capital stock; Inventories;

    Sammanfattning : The main focus of this thesis is the employment decisions of firms. The thesis consists of three self-contained but closely related essays, all enlightening employment dynamics in different ways. The thesis is mainly empirical but there are also some theoretical developments when existing theory is insufficient to explain the empirical findings. LÄS MER

  5. 19. Convergence Analysis and Improvements for Projection Algorithms and Splitting Methods

    Författare :Mattias Fält; Institutionen för reglerteknik; []
    Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; First-order methods; Convex Optimization; Nonsmooth Optimization; Large-scale Optimization; Iterative Methods; Douglas-Rachford splitting; Line Search;

    Sammanfattning : Non-smooth convex optimization problems occur in all fields of engineering. A common approach to solving this class of problems is proximal algorithms, or splitting methods. These first-order optimization algorithms are often simple, well suited to solve large-scale problems and have a low computational cost per iteration. LÄS MER

  7. 20. Drivers of Going Green in Financial Markets and Corporate Networks

    Författare :Zahra Hashemzadeh; Nationalekonomiska institutionen; []
    Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Investor Behavior; Asset Pricing; Financial Markets; Corporate Network; Corporate Social Responsibility CSR ; ESG performance; Sustainability; Environmental performance; Climate Strike; Public Attention;

    Sammanfattning : This dissertation is a collection of three self-contained empirical papers developing the knowledge on environmental responsibility of investors and corporations.The first paper investigates how corporate environmental performance propagates in firm networks. LÄS MER