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This dissertation contains a study of the multitext manuscript Codex Holmiensis D 3 based in Material Philology and its focus on the material conditions underlying manuscripts. The aim of the investigation is to describe D 3 in order to increase understanding of its material conditions including content and circumstance of copying, as well as its use and purpose. D 3 contains 14 text works in different genres, for example romances, chronicles, and edifying works. The paper manuscript in the format of a holster book has been dated through its watermarks to around 1487/1488. It was written for the noblewoman Elin Gustavsdotter (Sture). An older manuscript, Codex Holmiensis D 4a, has previously been identified as the exemplar of D 3. These manuscripts are very similar as regards language and content. However, it is shown here that D 4a could not have been the model for D 3 in the case of the romance Flores och Blanzeflor; nor can the manuscript as a whole be a copy of D 4a. There are few traces of use in D 3, but the first work, Herr Ivan Lejonriddaren, has several concluding texts before its final closing. These concluding texts suggest that parts of the work were being read while the rest was being copied. There are also dual quire signatures in this work, implying that the quires were in disarray, possibly because they were in use when the signatures were added. The purpose of D 3 was to educate and provide examples of good and bad behaviour for the nobility. Moreover, there is an owner-epilogue which also stresses courtly ideals and can be linked to the concept of exemplary behaviour. The contents can also be ordered thematically, with first a Carolingian connection, followed by one connected with Ireland and finally one focused on the Christian community. Codicological breaks divide the manuscript into two parts, which leads to the assumption of at least two common exemplars for D 3 and D 4a. An emphasis on the materiality of the manuscript reveals it to be not so much an unwieldy collection of unrelated text witnesses as a book created for a certain person and her time. / <p>Felaktigt ISBN i den tryckta versionen: 978-91-506-2618-6</p>

Un outil puissant dans le cadre des solutions algébro-géométriques des équations intégrables est l'identité de Fay sur des surfaces de Riemann compactes. Cette relation généralise une identité bien connue pour la fonction birapport dans le plan complexe. Elle permet d'établir des relations entre les fonctions theta et leurs dérivées. Cela offre une approche complémentaire aux solutions algébro-géométriques des équations intégrables avec certains avantages par rapport à l'utilisation des fonctions de Baker-Akhiezer. Cette méthode a été appliquée avec succès par Mumford et al. aux équations Korteweg-de Vries, Kadomtsev-Petviashvili et sine-Gordon. Selon cette approche, nous construisons des solutions algébro-géométriques des équations de Camassa-Holm et de Dym, ainsi que des solutions de l'équation de Schrödinger non linéaire à plusieurs composantes et des équations de Davey-Stewartson. Les limites solitoniques de ces solutions sont étudiées lorsque le genre de la surface de Riemann associée tombe à zéro. De plus, nous présentons une évaluation numérique des solutions algébro-géométriques des équations intégrables lorsque la surface de Riemann associée est réelle. / Fay's identity on Riemann surfaces is a powerful tool in the context of algebro-geometric solutions to integrable equations. This relation generalizes a well-known identity for the cross-ratio function in the complex plane. It allows to establish relations between theta functions and their derivatives. This offers a complementary approach to algebro-geometric solutions of integrable equations with certain advantages with respect to the use of Baker-Akhiezer functions. It has been successfully applied by Mumford et al. to the Korteweg-de Vries, Kadomtsev-Petviashvili and sine-Gordon equations. Following this approach, we construct algebro-geometric solutions to the Camassa-Holm and Dym type equations, as well as solutions to the multi-component nonlinear Schrödinger equation and the Davey-Stewartson equations. Solitonic limits of these solutions are investigated when the genus of the associated Riemann surface drops to zero. Moreover, we present a numerical evaluation of algebro-geometric solutions of integrable equations when the associated Riemann surface is real.

The desire to enhance and make ourselves better is not a new one and it has continued to intrigue throughout the ages. Individuals have continued to seek ways to improve and enhance their well-being for example through nutrition, physical exercise, education and so on. Crucial to this improvement of their well-being is improving their ability to remember. Hence, people interested in improving their well-being, are often interested in memory as well. The rationale being that memory is crucial to our well-being. The desire to improve one’s memory then is almost certainly as old as the desire to improve one’s well-being. Traditionally, people have used different means in an attempt to enhance their memories: for example in learning through storytelling, studying, and apprenticeship. In remembering through practices like mnemonics, repetition, singing, and drumming. In retaining, storing and consolidating memories through nutrition and stimulants like coffee to help keep awake; and by external aids like notepads and computers. In forgetting through rituals and rites. Recent scientific advances in biotechnology, nanotechnology, molecular biology, neuroscience, and information technologies, present a wide variety of technologies to enhance many different aspects of human functioning. Thus, some commentators have identified human enhancement as central and one of the most fascinating subject in bioethics in the last two decades. Within, this period, most of the commentators have addressed the Ethical, Social, Legal and Policy (ESLP) issues in human enhancements as a whole as opposed to specific enhancements. However, this is problematic and recently various commentators have found this to be deficient and called for a contextualized case-by-case analysis to human enhancements for example genetic enhancement, moral enhancement, and in my case memory enhancement (ME). The rationale being that the reasons for accepting/rejecting a particular enhancement vary depending on the enhancement itself. Given this enormous variation, moral and legal generalizations about all enhancement processes and technologies are unwise and they should instead be evaluated individually. Taking this as a point of departure, this research will focus specifically on making a case for ME and in doing so assessing the ESLP implications arising from ME. My analysis will draw on the already existing literature for and against enhancement, especially in part two of this thesis; but it will be novel in providing a much more in-depth analysis of ME. From this perspective, I will contribute to the ME debate through two reviews that address the question how we enhance the memory, and through four original papers discussed in part three of this thesis, where I examine and evaluate critically specific ESLP issues that arise with the use of ME. In the conclusion, I will amalgamate all my contribution to the ME debate and suggest the future direction for the ME debate.