Thesis (M.Sc.)--Acadia University, 2004. / Includes bibliographical references (leaves 75-78). Also available on the Internet via the World Wide Web.

Thesis (M.A.)--The University of North Carolina at Greensboro, 2009. / Directed by Paul Duvall; submitted to Dept. of Mathematics and Statistics. Title from PDF t.p. (viewed Jun. 7, 2010). Includes bibliographical references (p. 37-38).

Thesis (Ph. D.)--Industrial and Systems Engineering, Georgia Institute of Technology, 2006. / Xiaoming Huo, Committee Chair ; C. F. Jeff Wu, Committee Member ; Brani Vidakovic, Committee Member ; Liang Peng, Committee Member ; Ming Yuan, Committee Member.

<p>Vi som har författat detta arbete har riktat in oss på motivation till sjöss. Vad det är som</p><p>lockar folk att gå till sjöss och hur upplever de aktiva sjömännen sin tillvaro ombord.</p><p>Vi har gjort litteraturstudier för att samla in nödvändig fakta om motivation och livsstilar.</p><p>Vi har även skickat enkäter till rederier för att se vad dom anser om utveklingen till sjöss.</p><p>Vi har använt oss av en kvantitativ metod med enkät frågor riktade till aktiva sjömän,</p><p>elever som utbildar sig på gymnasienivå till motorman/matros och rederier.</p><p>I våran studie kom vi fram till att lönen anses vara ett problem när man skall rekrytera</p><p>personal till svenska rederier. Den största faktorn som lockar människor till sjömansyrket</p><p>är det fördelaktiga avlösningssystemet samt den långa sammanhängande ledigheten.</p><p>För att få svenska sjömän att stanna kvar inom svensk sjöfart så måste näringen anstränga</p><p>sig mer för att finna lösningar på problemet med att sjömän söker jobb på utländska</p><p>rederier.</p>

The main component of this essay is the numerical analysis of stochastic differential equations driven by Wiener and Poisson processes. In order to do this, we focus on two model problems, the geometric Brownian motion and the linear stochastic oscillator, studied in the literature for stochastic differential equations only driven by a Wiener process. This essay covers theoretical as well as numerical investigations of jump - or more specifically, Poisson - processes and how they influence the above model problems. / Den huvudsakliga komponenten av uppsatsen är en numerisk analys av stokastiska differentialekvationer drivna av Wiener- och Poisson-processer. För att göra det så fokuserar vi på två modellproblem, den geometriska Brownska rörelsen samt den linjära stokastiska oscillatorn, studerade i litteratur för stokastiska differentialekvationer som bara drivs av en Wiener-process.Den här uppsatsen täcker teoretiska samt numeriska undersökningar av hopp - eller mer specifikt, Poisson - processer och hur de påverkar de ovan nämnda modellproblemen.

This study investigates the possible effects that access to selected multiple representations (words, arrows and colours) have in terms of cognitive load and learner achievement when presented with algebraic problems at grade nine level. The presentation of multiple representations (the intervention) was intended to decrease extraneous cognitive load, manage the intrinsic cognitive load (algebraic problems) and optimise germane cognition (schema acquisition and automation). An explanatory sequential mixed-method design was employed with six hundred and seventy three learners in four secondary schools. Quantitative data were generated via pre-, intervention and post-tests/questionnaires, while qualitative data were obtained from open-ended questions in the pre-, intervention, and post-tests/questionnaires, eight learner focus group interviews (n = 32), and four semi-structured, open-ended teacher interviews. Statistically and practically significant improvement in mean test scores from the pre- to intervention test scores in all schools was noted. No statistically and practically significant improvement was noted in further post-tests except for post-test 2 which employed more challenging problems (statistically significant decrease with a small practical effect). Learners expressed their preference for arrows, followed by colours and then words as effective representations. Teacher generated qualitative data suggests that they realise the importance of using multiple representations as an instructional strategy and implicitly understand the notion of cognitive load. The findings, when considered in the light of literature on cognitive load, suggest that a reduction in extraneous cognitive load by using a more effective instructional design (multiple representations) frees working memory capacity which can then be devoted to the intrinsic cognitive load (algebraic problems) and thereby increase germane cognition (schema acquisition and automation).

Many results in real and complex analysis are the consequence of mean value properties and theorems. This is the case for harmonic and holomorphic functions as well. The mean value property builds the foundation for several properties of each set of functions. Using this property one can derive more properties like the maximum principle for harmonic functions and the maximum modulus principle for holomorphic functions. These results are then used to show other properties. The goal is to compare the theorems and proofs for harmonic and holomorphic functions and to understand why the results seem to be similar.

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This Licentiate thesis deals with Hardy-type inequalities restricted to cones of monotone functions. The thesis consists of two papers (paper A and paper B) and an introduction which gives an overview to this specific field of functional analysis and also serves to put the papers into a more general frame.We deal with positive $\sigma $-finite Borel measures on ${\mathbbR}_{+}:=[0,\infty)$ and the class $\mathfrak{M}\downarrow $($\mathfrak{M}\uparrow $) consisting of all non-increasing(non-decreasing) Borel functions $f\colon{\mathbbR}_{+}\rightarrow[0,+\infty ]$.In paper A some two-sided inequalities for Hardy operators on thecones of monotone functions are proved. The idea to study suchequivalences follows from the Hardy inequality$$\left( \int_{[0,\infty)}f^pd\lambda\right)^{\frac{1}{p}}\le \left(\int_{[0,\infty)} \left( \frac{1}{\Lambda(x)} \int_{[0,x]}f(t)d\lambda(t)\right)^p d\lambda(x)\right)^{\frac{1}{p}}$$$$\leq \frac{p}{p-1}\left(\int_{[0,\infty)}f^pd\lambda\right)^{\frac{1}{p}},$$which holds for any $f\in \mathfrak{M}\downarrow$ and $1<p<\infty.$In the paper similar equivalences are found for some otherHardy-type operators for the full range of parameter $p,\, p\neq 0.$ As anapplication of one of the results, we also obtain a newcharacterization of the discrete inequality for one of the mostinteresting cases of parameters, namely when $0<q<p\leq 1.$The equivalences we have proved in paper A are used in paper B to obtainnecessary and sufficient conditions for some other Hardy-typeinequalities on cones of monotone functions. In particular, wegive a complete description for inequalities with Volterra integraloperators involving Oinarov's kernel for the parameters$0<p<\infty,\,\,1\leq q<\infty.$ We also study inequalities of the form$$\left(\int_{[0,\infty)}{\left(\int_{[x,\infty)}fd\lambda\right)}^q d\lambda(x)\right)^\frac{1}{q} \leq C\left(\int_{[0,\infty)}f^p d\mu\right)^\frac{1}{p},\,\,\,f \in \mathfrak{M}\downarrow,\, f\not\equiv 0$$and$$\left(\int_{[0,\infty]}\left(\int_{[0,x]}fd\lambda\right)^qd\lambda(x)\right)^\frac{1}{q}\leq C\left(\int_{[0,\infty)}f^pd\mu\right)^\frac{1}{p},\,\,\,f \in \mathfrak{M}\uparrow,\, f\not\equiv 0$$and find necessary and sufficient conditions not only for positive, but also for negativeparameters of summation.

No description available.