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Found 2 essays matching the above criteria.
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1. Municipal solid waste management in Minsk - current situation, future development and challenges
University essay from Lunds universitet/Miljövetenskaplig utbildningAbstract : Management of municipal solid waste (MSW) is an urgent issue throughout the world. Urbanization, population increase, and economy growth are all factors which contribute to an increase of MSW generation. READ MORE
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2. A counterexample concerning nontangential convergence for the solution to the time-dependent Schrödinger equation
University essay from Matematiska och systemtekniska institutionenAbstract : Abstract: Considering the Schrödinger equation $\Delta_x u = i\partial{u}/\partial{t}$, we have a solution $u$ on the form $$u(x, t)= (2\pi)^{-n} \int_{\RR} {e^{i x\cdot \xi}e^{it|\xi|^2}\widehat{f}(\xi)}\, d \xi, x \in \RR, t \in \mathbf{R}$$ where $f$ belongs to the Sobolev space. It was shown by Sjögren and Sjölin, that assuming $\gamma : \mathbf{R}_+ \rightarrow \mathbf{R}_+ $ being a strictly increasing function, with $\gamma(0) = 0$ and $u$ and $f$ as above, there exists an $f \in H^{n/2} (\RR)$ such that $u$ is continuous in $\{ (x, t); t>0 \}$ and $$\limsup_{(y,t)\rightarrow (x,0),|y-x|<\gamma (t), t>0} |u(y,t)|= + \infty$$ for all $x \in \RR$. READ MORE
