Textual Space and Metafiction in Mark Z Danielewski's House of Leaves

The thesis presents an argument that through employing metafictional techniques, experimentation with textual and graphic space and allusions to hypertextual devices, Mark Z. Danielewski's House of Leaves seeks to remind the reader of the presence of the book in print fiction. Danielewski dispenses with traditional textual formats in order to provoke the reader to realise the presence of the physical book in their hands. This is mirrored in the narrative as two of the main characters both obtain a copy of the very same book that the reader is holding. The author employs metafictional characteristics such as characters that acknowledge their fictional status whilst writing a book within a book. The first chapter of the thesis examines the potential of metatexts and criticism in the twenty-first century and a questioning of its continued relevance. Danielewski challenges textual space that potentially distances the reader from the narrative. There is an overwhelming amount of blank space in the text where there could have been narrative. The reader is told on several occasions that parts of the narrative are missing. Chapter Two is concerned with references to the book and the unconventional page aesthetics that encourage the reader to initially look at the page before actually 'looking through the page'. The final chapter compares House of Leaves with the hypertext fictions that it so often mirrors. The two forms of literature, whilst initially seeming quite different are actually very similar in narrative and form. House of Leaves appears to draw on some of the conventions associated with hypertext fiction in order to provide the reader a more active role in the reading of the text, whilst allowing them to understand the conventions of the writing. The experimentation with conventional textual space, metatextual techniques and references to electronic literature in House of Leaves challenge the nature of the physical book and its presence in contemporary prose fiction

Experimental tracking of limit-point bifurcations and backbone curves using control-based continuation

Control-based continuation (CBC) is a means of applying numerical continuation directly to a physical experiment for bifurcation analysis without the use of a mathematical model. CBC enables the detection and tracking of bifurcations directly, without the need for a post-processing stage as is often the case for more traditional experimental approaches. In this paper, we use CBC to directly locate limit-point bifurcations of a periodically forced oscillator and track them as forcing parameters are varied. Backbone curves, which capture the overall frequency-amplitude dependence of the system’s forced response, are also traced out directly. The proposed method is demonstrated on a single-degree-of-freedom mechanical system with a nonlinear stiffness characteristic. Results are presented for two configurations of the nonlinearity — one where it exhibits a hardening stiffness characteristic and one where it exhibits softening-hardening. </jats:p

Analysis of electrical power data for condition monitoring of a small wind turbine

Certain parts of a wind turbine, for example, the gearbox require significant time and heavy lifting equipment in the event of catastrophic failure necessitating replacement. Continuous condition monitoring has the potential to catch problems early, enable scheduled preventative maintenance and thereby reduce turbine downtime, reduce the number of site visits and prevent secondary damage. Accelerometers applied to mechanical components of the drive train are traditionally used for condition monitoring but require their own data acquisition system and analysis software. In contrast, the electrical current and voltage are continuously measured and could also be used for condition monitoring more cheaply. An experimental data acquisition system has been installed on a small (25kW) onshore turbine in Leicestershire, UK to compare three-phase currents and voltages on the stator windings with six accelerometer signals. Data have been recorded before and after a gearbox failure and replacement. Data were analysed using both Fourier Transform and Morlet Continuous Wavelet Transform methods. Results show that the stator voltages show the same radial and axial mode vibration frequencies as the accelerometers and could therefore be used for condition monitoring. Furthermore, the stator currents show torsional modes of vibration not picked up by the accelerometers

Identifying the significance of nonlinear normal modes

Nonlinear normal modes (NNMs) are widely used as a tool for understanding the forced responses of nonlinear systems. However, the contemporary definition of an NNM also encompasses a large number of dynamic behaviours which are not observed when a system is forced and damped. As such, only a few NNMs are required to understand the forced dynamics. This paper firstly demonstrates the complexity that may arise from the NNMs of a simple nonlinear system-highlighting the need for a method for identifying the significance of NNMs. An analytical investigation is used, alongside energy arguments, to develop an understanding of the mechanisms that relate the NNMs to the forced responses. This provides insight into which NNMs are pertinent to understanding the forced dynamics, and which may be disregarded. The NNMs are compared with simulated forced responses to verify these findings

Las mujeres nobles y el poder en los reinos de León y Castilla en el siglo XII: un estudio preliminar

El presente artículo analiza hasta qué punto las mujeres pertenecientes a la aristocracia eran capaces de ostentar el poder y ejercer su influencia en el ámbito de los reinos de León y Castilla durante el siglo XII. Pese a ser cierto que el acceso de las mujeres nobles al poder y al ejercicio de influencias se encontraba limitado por cuestiones de género, lo cual implicaba que se encontraban prácticamente excluidas de determinadas esferas de actividad relevantes, tales como la pertenencia a la curia real, estas mujeres estaban lejos de ser meras víctimas pasivas del dominio masculino, como a menudo se ha supuesto. Gracias a sus considerables recursos económicos, que administraban a través de las instituciones entrelazadas del señorío y la familia, y a su estrecha relación con la Iglesia, dichas mujeres estaban capacitadas para desempeñar papeles destacados en el ámbito público y ejercer un grado importante de poder y autoridad en su paso por el ciclo vital que iba desde el matrimonio hasta la viudedad. Dicho papel público no necesariamente se volvía más limitado tras la muerte del marido; si acaso, ganaba importancia, ya que las madres continuaban ofreciendo su apoyo a sus hijos y ejercían el mecenazgo, especialmente el religioso, a una escala sin precedentes

Symmetric wormholes in Einstein-vector-Gauss-Bonnet theory

We construct wormholes in Einstein-vector-Gauss-Bonnet theory where a real massless vector field is coupled to the higher curvature Gauss-Bonnet invariant. We consider three coupling functions which depend on the square of the vector field. The respective domains of existence of wormholes possess as their boundaries i) black holes, ii) solutions with a singular throat, iii) solutions with a degenerate throat and iv) solutions with cusp singularities. Depending on the coupling function wormhole solutions can feature a single throat or an equator surrounded by a double throat. The wormhole solutions need a thin shell of matter at the throat, in order to be symmetrically continued into the second asymptotically flat region. These wormhole spacetimes allow for bound and unbound particle motion as well as light rings.Comment: 27 pages, 16 figure

The aristocracy of Leon-Castile in the reign of Alfonso VII (1126-1157).

In 2 volsAvailable from British Library Document Supply Centre- DSC:DX91180 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

The NAS parallel benchmarks

A new set of benchmarks was developed for the performance evaluation of highly parallel supercomputers. These benchmarks consist of a set of kernels, the 'Parallel Kernels,' and a simulated application benchmark. Together they mimic the computation and data movement characteristics of large scale computational fluid dynamics (CFD) applications. The principal distinguishing feature of these benchmarks is their 'pencil and paper' specification - all details of these benchmarks are specified only algorithmically. In this way many of the difficulties associated with conventional benchmarking approaches on highly parallel systems are avoided