Search for dissertations about: "Qian Liu"

Found 4 swedish dissertations containing the words Qian Liu.

  1. 1. Essays on Labor Economics: Education, Employment, and Gender

    Author : Qian Liu; Bertil Holmlund; Oskar Nordström Skans; Eskil Wadensjö; Uppsala universitet; []
    Keywords : SOCIAL SCIENCES; SAMHÄLLSVETENSKAP; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Economics; Nationalekonomi; nationalekonomi; Economics;

    Abstract : Essay I, co-authored with Bertil Holmlund and Oskar Nordström Skans, offers evidence on how delayed transitions to higher education (“gap years”) affect subsequent earnings and lifetime earnings. We exploit rich Swedish register data and find that postponement of higher education is associated with a persistent and non-trivial earnings penalty. READ MORE

  2. 2. Spatial-Temporal Patterns of Urban Growth in Shanghai, China: Monitoring, Analysis, and Simulation

    Author : Qian Zhang; Yifang Ban; Jiyuan Liu; Bin Jiang; KTH; []
    Keywords : ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; urban growth; spatial-temporal pattern; remote sensing; spatial metrics; scenarios-based simulation; Shanghai; Geoengineering; Geoteknik;

    Abstract : Supporting huge population, megacities are definitely the hot spots of production, consumption, and waste generation. Without careful investment and planning, megacities will be overwhelmed by burgeoning negative impacts on the environment, natural resources, and human health, as well as a host of social and economic issues. READ MORE

  3. 3. Studies of Voltage Losses in Organic Solar Cells

    Author : Deping Qian; Fengling Zhang; Feng Gao; Olle Inganäs; Natalie Stingelin; Linköpings universitet; []
    Keywords : NATURAL SCIENCES; NATURVETENSKAP; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; NATURAL SCIENCES; NATURVETENSKAP; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

    Abstract : Organic photovoltaic (OPV) devices based on semiconducting polymers and small molecules are potential alternatives to inorganic solar cells, owing to their advantages of being inexpensive, lightweight, flexible and suitable for roll-to-roll production. The state of art organic solar cells (OSCs) performed power conversion efficiencies (PCEs) over 13%. READ MORE

  4. 4. Experimental Helicobacter pylori infection in an animal model

    Author : Yi-Qian Sun; Torkel Wadström; Linköpings universitet; []
    Keywords : MEDICINE; MEDICIN;

    Abstract : Background: Helicobacter pylori is a microaerophilic Gram-negative bacterium colonizing the human stomach. The prevalence of this infection is between 20-90% depending on geographic location. Comprehensive studies have shown significant relationships between H. pylori infection and chronic gastritis, peptic ulcer and gastric carcinoma. READ MORE