Sökning: "ARA Model"

Visar resultat 1 - 5 av 13 avhandlingar innehållade orden ARA Model.

1. 1. Modeling and Verification of Ultra-Fast Electro-Mechanical Actuators for HVDC Breakers

   Författare :Ara Bissal; Göran Engdahl; Elena Lomonova; KTH; []
   Nyckelord :Actuators; Armature; Capacitors; Circuit breakers; Coils; Damping; Eddy currents; Elasticity; Electro-mechanical devices; Electromagnetic forces; Finite element methods; HVDC transmission; Image motion analysis; Magnetic domains; Magnetic flux; Magnetic forces; Magnetic materials; Magnets; Thermal analysis; Electrical Engineering; Elektro- och systemteknik;

   Sammanfattning : The continuously increasing demand for clean renewable energy has rekindled interest in multi-terminal high voltage direct current (HVDC) grids. Although such grids have several advantages and a great potential, their materialization has been thwarted due to the absence of HVDC breakers. LÄS MER

3. 2. On the Design of Ultra-fast Electro-Mechanical Actuators

   Författare :Ara Bissal; Göran Engdahl; Torbjörn Lembke; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Electro-mechanical drive; Circuit breakers; HVDC transmission; Eddy currents; Finite element; Electromagnetic; Thermal; Mechanical; Coils; Armature; Image motion analysis.;

   Sammanfattning : The continuously increasing demand for connecting electric grids with remote renewable energy sources such as wind power and photovoltaic cells has rekindled interest in high voltage direct current (HVDC) multi-terminal networks. Although HVDC networks have numerous benefits, their adoption relies entirely on the availability of HVDC circuit breakers which, compared to traditional alternating current circuit breakers, have to operate in a time frame of milliseconds. LÄS MER

4. 3. Heavy Vehicle Maintenance in an Industrial Network Perspective: Implications of Embeddedness and Interdependencies

   Författare :Klas Hedvall; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Business Networks; Transport Solutions; Trucks; Activities; Transport Service Triad; Road Transports; ARA Model; Vehicle Maintenance; Interdependencies; Maintenance; Embeddedness;

   Sammanfattning : Road transport solutions are often complex and involve numerous stakeholders. To secure that goods arrive in a timely and efficient manner, companies must cooperate and interact to define, implement and operate the transport solutions required. LÄS MER

5. 4. Conceptualising Solutions in Business Networks: The Case of Heavy Vehicle Maintenance

   Författare :Klas Hedvall; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Heavy Vehicle Maintenance; Temporal Embeddedness; Spatial Embeddedness; Solutions; ARA Model; Interaction Centric; Business Networks; Industrial Network Approach;

   Sammanfattning : This thesis problematises and conceptualises the phenomenon of solutions in business networks based on processual approaches to solutions and the Industrial Network Approach to business markets. In particular, the thesis focuses on the interorganisational and interactive aspects involved in solutions embedded in business networks. LÄS MER

7. 5. Identification and characterization of novel genetic and epigenetic factors required for normal and malignant hematopoiesis

   Författare :Yaser Heshmati; Karolinska Institutet; Karolinska Institutet; []
   Nyckelord :;

   Sammanfattning : Acute myeloid leukemia (AML) is a type of blood cancer, characterized by clonal expansion and loss of differentiation ability of myeloid progenitor cells leading to abnormal accumulation of immature myeloid cells (myeloblasts) in the bone marrow and peripheral blood. This thesis (study I to IV) focused on the identification and characterization of genes which are required for AML growth. LÄS MER