Search for dissertations about: "Hybrid system"

Showing result 1 - 5 of 660 swedish dissertations containing the words Hybrid system.

  2. 1. Speciation and Metabolic rate : Insights from an avian hybrid zone

    Author : S. Eryn McFarlane; Anna Qvarnström; Jenny Boughman; Uppsala universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; resting metabolic rate; life history; hybridization; speciation; reproductive isolation; Ficedula flycatcher; Biologi med inriktning mot zooekologi; Biology with specialization in Animal Ecology;

    Abstract : The role of divergent climate adaptation in speciation has received surprisingly little scientific attention. My dissertation research focused on how resting metabolic rate (RMR) relates to the build up of prezygotic and postzygotic isolation in a natural Ficedula flycatcher hybrid zone. READ MORE

  4. 2. The Four-Quadrant Transducer System : for Hybrid Electric Vehicles

    Author : Erik Nordlund; Chandur Sadarangani; Hans Kahlen; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electrical engineering; Electrical Machines; Hybrid Vehicles; Elektroteknik; Electrical engineering; Elektroteknik;

    Abstract : In this thesis a hybrid electrical powertrain called the Four Quadrant Transducer (4QT) has been evaluated through different driving simulations, which later resulted in the manufacture of a prototype. The simulation of a 12 metric ton distribution truck showed that the 4QT system can reduce the fuel consumption by approximately 30 % during the FTP75 drive cycle. READ MORE

  5. 3. Designing Human-Centered Hybrid Decision Support Systems

    Author : Lu Cao; Göteborgs universitet; []
    Keywords : NATURVETENSKAP; NATURAL SCIENCES; Decision support system; Decision making; Decision-making; Hybrid system; Human–machine hybrid; Human-centered; Human-centered AI; Design science research; Action design research; Design principle; Multi-grounded theory;

    Abstract : Innovative decision support systems (DSSs) are revolutionizing key processes in organizations. These systems are used in managerial decision-making to solve increasingly complicated decision tasks, for example, using artificial intelligence. READ MORE

  6. 4. Towards sustainable urban transportation : Test, demonstration and development of fuel cell and hybrid-electric buses

    Author : Anders Folkesson; Per Alvfors; Peter Treffinger; KTH; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; acceptance; analysis; auxiliary system; bus; Clean Urban Transport for Europe; concept; CUTE; demonstration; driver; drive cycle; duty cycle; energy flow; evaluation; fuel cell; heavy duty vehicle; hybrid management; hybrid vehicle; hydrogen; passenger; PEM; safety; Sankey diagram; series hybrid; sustainable; test; urban transport; vehicle simulation; acceptans; analys; hjälpaggregat; buss; Clean Urban Transport for Europe; koncept; CUTE; demonstration; körcykel; förare; energiflöde; utvärdering; bränslecell; tunga fordon; hybridsystemkontroll; hybridfordon; vätgas; passagerare; PEM; säkerhet; Sankey-diagram; seriehybrid; uthållig; hållbar; test; stadstransport; fordonssimulering; Vehicle engineering; Farkostteknik; Chemical engineering; Kemiteknik;

    Abstract : Several aspects make today’s transport system non-sustainable: • Production, transport and combustion of fossil fuels lead to global and local environmental problems. • Oil dependency in the transport sector may lead to economical and political instability. READ MORE

  7. 5. Study of a Pneumatic Hybrid aided by a FPGA Controlled Free Valve Technology System

    Author : Sasa Trajkovic; Förbränningsmotorer; []
    Keywords : TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Compressor; Air-motor; Pneuamtc; Pneumatic-hybrid; VVT; Valve; regenerative; Hybrid; Air;

    Abstract : Urban traffic involves frequent acceleration and deceleration. During deceleration, the energy previously used to accelerate the vehicle is mainly wasted on heat generated by the friction brakes. If this energy that is wasted in traditional IC engines could be saved, the fuel economy would improve. READ MORE