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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
491

Stochastic Models of Stock Market Dynamics

Li, Na January 2010 (has links)
No description available.
492

Sur quelques propriétés arithmétiques de certaines fonctions transcendantes

Stridsberg, Erik January 1909 (has links)
No description available.
493

Bidrag till en aritmetisk teori för binära kubiska former

Huss, Einar January 1912 (has links)
No description available.
494

Quelques études sur la convergence des déterminants infinis et les systèmes d'une infinité d'équations linéaires à une infinité d'inconnus

Palmqvist, Reinhold January 1915 (has links)
No description available.
495

Triality

Suhr, Rune January 2010 (has links)
No description available.
496

Data analysis and quality indices for data collected in a rural, low-development area

Rydevik, Gustav January 2007 (has links)
No description available.
497

The uncertainty principle for functions with sparse support and spectrum

Ríos Zertuche R. Z., Rodolfo A. January 2005 (has links)
No description available.
498

Portfolio insurance methods for index-funds

Lundvik, Andreas January 2005 (has links)
No description available.
499

Study of equations for Tippe Top and related rigid bodies

Rutstam, Nils January 2010 (has links)
The Tippe Top consist of a small truncated sphere with a peg as a handle. When it is spun fast enough on its spherical part it starts to turn upside down and ends up spinning on the peg. This counterintuitive behaviour, called inversion, is a curious feature of this dynamical system that has been studied for some time, but obtaining a complete description of the dynamics of inversion has proved to be a difficult problem. The existing results are either numerical simulations of the equations of motion or asymptotic analysis that shows that the inverted position is the only attractive and stable position under certain conditions. This thesis will present methods to analyze the equations of motion of the Tippe Top, which we study in three equivalent forms that each helps us to understand different aspects of the inversion phenomenon. Our study of the Tippe Top also focuses on the role of the underlying assumptions in the standard model for the external force, and what consequences these assumptions have, in particular for the asymptotic cases. We define two dynamical systems as an aid to understand the dynamics of the Tippe Top, the gliding heavy symmetric top and the gliding eccentric cylinder. The gliding heavy symmetric top is a natural non-integrable generalization of the well-known heavy symmetric top. Equations of motion and asymptotics for this system are derived, but we also show that equations for the gliding heavy symmetric top can be obtained as a limit of the equations for the Tippe Top. The equations for the gliding eccentric cylinder can be interpreted as a special case of the equations for the Tippe Top, and since it is a simpler system, properties of the Tippe Top equations are easier to study. In particular, asymptotic analysis of the gliding eccentric cylinder reveals that the standard model seems to have inconsistencies that need to be addressed.
500

Matematiksvårigheter och laborativ matematik

Svensson, Erika, Linderoth, Josefine January 2014 (has links)
Denna studie riktar sig till lärare i matematik och undersöker om ett laborativt arbetssätt kan hjälpa elever i matematiksvårigheter. Syftet är att få en klarhet i om ett laborativt arbetssätt kan hjälpa elever i matematiksvårigheter. Studien är en litteraturstudie där forskares resultat presenteras och jämförs med varandra. Kriterier för sökningen har under hela studien varit viktiga, då syftet i artiklarna måste stämma överens med vårt syfte. Det har varit viktigt att de olika artiklarna har samma syn på nyckelbegreppen som vi har. Detta för att en jämförelse ska vara möjlig. Resultatet av studien visar att de flesta förespråkar ett laborativt och konkret arbetssätt, inte bara för elever i matematiksvårigheter, utan för att skapa en tydlighet för alla elever. Slutsatsen vi drar är att matematiken måste förklaras på ett tydligt sätt för elever i matematiksvårigheter, och då är ett laborativt arbetssätt användbart.

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