Sökning: "V"

Visar resultat 6 - 10 av 7082 avhandlingar innehållade ordet V.

1. 6. Assessment of Robustness in Railway Traffic Timetables

   Författare :Emma V. Andersson; Jan Lundgren; Anders Peterson; Johanna Törnquist Krasemann; Thorsten Büker; Linköpings universitet; []
   Nyckelord :;

   Sammanfattning : A tendency seen for the last decades in many European railway networks is a growing demand for capacity. An increased number of operating trains has led to a delay sensitive system where it is hard to recover from delays, where even relatively small delays are easily propagating to other traffic. LÄS MER

3. 7. Reassembling the Environmental Archives of the Cold War : Perspectives from the Russian North

   Författare :Dmitry V. Arzyutov; Peder Roberts; Per Högselius; Julia Lajus; Bathsheba Demuth; KTH; []
   Nyckelord :HUMANIORA; HUMANITIES; SAMHÄLLSVETENSKAP; SOCIAL SCIENCES; Environmental Archive; Russian Arctic; Encounters; Cold War; Indigenous and Academic Ways of Knowing; Miljöarkiv; ryska Arktis; möten; det kalla kriget; ursprungliga och akademiska kunskapssystem.; Historiska studier av teknik; vetenskap och miljö; History of Science; Technology and Environment;

   Sammanfattning : To what extent the environmental history of the Arctic can move beyond thedivide between Indigenous peoples and newcomers or vernacular and academicways of knowing? The present dissertation answers this question by developing thenotion of an environmental archive. Such an archive does not have particular referenceto a given place but rather it refers to the complex network that marks the relationsbetween paper documents and human and non-human agencies as they are able towork together and stabilise the conceptualisation of a variety of environmentalobjects. LÄS MER

4. 8. Flutter in sectored turbine vanes

   Författare :Olga V. Chernysheva; KTH; []
   Nyckelord :turbomachinery; aerodynamics; unsteady CFD; design; flutter;

   Sammanfattning : In order to eliminate or reduce vibration problems inturbomachines without a high increase in the complexity of thevibratory behavior, the adjacent airfoils around the wheel areoften mechanically connected together with lacing wires, tip orpart-span shrouds in a number of identical sectors. Although anaerodynamic stabilizing effect of tying airfoils together ingroups on the whole cascade is indicated by numerical andexperimental studies, for some operating conditions suchsectored vane cascade can still remain unstable. LÄS MER

5. 9. First-principles density-functional computational experiments to understand the nature of metal- carbonitride interface adhesion

   Författare :Sergey V. Dudiy; Chalmers tekniska högskola; []
   Nyckelord :TEKNIK OCH TEKNOLOGIER; ENGINEERING AND TECHNOLOGY;

   Sammanfattning : .... LÄS MER

7. 10. Some dynamic economic models of the firm : a microeconomic analysis with emphasis on firms that maximize other goals than profit alone

   Författare :Elon V. Ekman; Handelshögskolan i Stockholm; []
   Nyckelord :SAMHÄLLSVETENSKAP; SOCIAL SCIENCES;

   Sammanfattning : This microeconomic study of the firm addresses dynamic processes such as financing, capital investment, marketing investments and labor planning. It lies in the nature of these activities that they are fully dynamic and therefore best analyzed in a fully dynamic frame of reference. LÄS MER