Sökning: "range"

Visar resultat 11 - 15 av 7919 avhandlingar innehållade ordet range.

1. 11. Vägar inom räckhåll : Spåren efter resande i det förindustriella bondesamhället

   Författare :Ylva Stenqvist Millde; Gert Magnusson; Anders Andrén; Eva Svensson; Stockholms universitet; []
   Nyckelord :HUMANIORA; HUMANITIES; Reach; range; roads; travel; institutional; flexibility; outland use; peripheral communities; Ängersjö; Älvros; Enviken; Hälsingland; Dalarna; Archaeology; Arkeologi; arkeologi; Archaeology;

   Sammanfattning : This thesis addresses the importance of human patterns of movement and interfaces in the local community and the constituents of peripheral forest communities, taking roads and human patterns of movement as the starting point. Questions are raised concerning how people have related to roads and travel - institutionally or flexibly. LÄS MER

3. 12. On Medium Access for Wireless Ad-hoc and Sensor Networks

   Författare :Arash Tahmasebi Toyserkani; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; MAC; Transmission range; Interference range; Taffic Safety; Sensor Networks; TDMA; CSMA;

   Sammanfattning : The medium access control (MAC) is a sub-layer of the data link layer, thesecond layer of the open system interconnection (OSI) model. The MAC sub-layeris responsible for organizing the access to the shared channel and it is due tothis important responsibility that the performance of networks is substantiallyinfluenced by the MAC protocol. LÄS MER

4. 13. Long-range decision models in mining

   Författare :Nils-Erik Norén; Handelshögskolan i Stockholm; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : Decision models for optimizing decisions in mining. Two principal models are presented:1) For optimizing the rate of production in a mine2) For optimizing the cut-off grade. The models are based on dynamic programming and simulate the economic consequences of alternative decisions. Computer programs containing the models are presented. LÄS MER

5. 14. Magneto-sensitive rubber in the audible frequency range

   Författare :Peter Blom; Leif Kari; Luigi Bregant; KTH; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; Magneto-sensitivity; Rubber; Audible frequency range; Amplitude dependence; Vibration isolator; Fletcher-Gent effect; Stiffness; Acoustics; Akustik;

   Sammanfattning : The dynamic behaviour in the audible frequency range of magneto-sensitive (MS) rubber is the focus of this thesis consisting of five papers A-E. Paper A presents results drawn from experiments on samples subjected to different constant shear strains over varying frequencies and magnetic fields. LÄS MER

7. 15. A Two-Stroke Range Extender Engine For Heavy Duty BEV applications

   Författare :Lennarth Zander; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY; gas exchange; after burner; single cylinder; Two-stroke engine; Range extender; BEV; Battery electric vehicles;

   Sammanfattning : A back-up range extender (REX) is proposed to support battery electric vehicles (BEV) for heavy duty applications. A single cylinder crank case scavenged two-stroke SI-internal combustion engine (ICE) with a turbocharger system is considered powerful and small enough to be installed directly on the existing electric machine in the electric powertrain. LÄS MER