Thesis (Ph.D.)--Pennsylvania State University, 2004. / Mode of access: World Wide Web.

Thesis (Ph.D.)--Pennsylvania State University, 2004. / Mode of access: World Wide Web.

In chip-multiprocessor (CMP) designs, when the number of core increases, the size of on-chip communication fabric and data storage grows accordingly and therefore the chip power challenge is exacerbated. This thesis work considers the power management for networks-on-chip (NoC) and the last level cache, which constitute the uncore in CMP designs. NoC is regarded as a scalable approach to cope with the increasing demand for on-chip communication bandwidth. The last level cache is shared among all cores. The focus of this work is on the control techniques for uncore dynamic voltage and frequency scaling. A realistic but not well-studied scenario is investigated. That is, the entire uncore shares a single voltage/frequency domain, as opposed to separated domains in most of previous works. One appealing advantage here is that data packets no longer experience the interfacing overhead across different voltage/frequency domains. The classic PI (Proportional and Integral) control method is adopted due to its simplicity, flexibility and low implementation overhead. This thesis research outcome includes three parts. First, stability of the PI control is analyzed. Second, a model-assisted PI control scheme is proposed and studied. The model assist is to address the problem that no universally good reference point exists for the control. Third, the windup issue for the PI control is investigated. Full architecture simulations are performed on public benchmark suites to validate the proposed techniques. The result show 76% energy reduction with less than 6% performance degradation compared to constantly high voltage/frequency for uncore.

Les oxydes fonctionnels sont des matériaux qui manifestent des propriétés intéressantes. L'étude de l'environnement local par rapport à la structure moyenne idéale est essentiel et peut être fourni par l'utilisation de techniques modernes de résonance magnétique nucléaire (RMN). Le travail présenté dans cette thèse suit et développe ces approches combinées pour l'enquête de trois classes différentes d'oxydes fonctionnels qui trouvent des applications dans des domaines d'intérêt technologique pertinente, comme l'optique et de l'énergétique : système perovskite LaSrAlO4, mélilite LaSr(Ga/Al)3O7 et la famille de orthosilicates Li2(Fe/Mn)SiO4. / The functional oxides are performing materials showing interestant properties. The study of the local environment respect to the average struvture is essential for the deep understanding of the correlations between structure and properties ; this investigation of short and medium range can be performed with the use of solid state NMR techniques. In particular in this thesis three different classes of materials for applications in fields of optic and energy are considered : perovskite structure LaSrAlO4, the melilite system LaSr(Ga/Al)3O7 and the family of orthosylicates Li2(Fe/Mn)SiO4.

As of the 19th C up until our present day, big cities have set the stage for many literary works, and Barcelona is no exception to this occurrence.  This study aims to address the urban imagery of a postwar Barcelona through the walks described in three novels, written by Spanish women writers. Each one will be analyzed both individually and contrastively. The necessary comparisons will be established and we will further prove the suitability of the theories of Certau, Lefebvre and Lynch. Finally, we will establish the appropriate conclusions derived from our investigation. / Las grandes metrópolis han sido escenario de multitud de narraciones desde el s. XIX hasta la actualidad y Barcelona no es ninguna excepción de ello. Este estudio se aborda el imaginario urbano de la Barcelona de postguerra en los paseos descritos en tres novelas de escritoras españolas, analizándolas individual y contrastivamente. Se procede a establecer las comparaciones necesarias y se observa la idoneidad de algunas teorías de Certeau, Lefebvre y de Lynch. Se aportan, por fin, las conclusiones pertinentes

Publicación a texto completo no autorizada por el autor / Plantea ubicar el pensamiento paradójico como la base del quehacer poético, específicamente en los casos de Simbólicas (1911), de José María Eguren, y 5 metros de poemas (1927), de Carlos Oquendo de Amat. Este pensamiento paradójico consiste en la superación de las relaciones antitéticas que estructuran el orden normal de las cosas, de tal manera que pueda ser observable aquello que está más allá o aquello que se encuentra en medio de los elementos que conforman las oposiciones. Describe, analiza y explica los elementos y procedimientos propios de aquel pensamiento paradójico que se encuentra en la base de dichos poemarios. Realiza un análisis textual, el cual se divide en dos partes: la primera consiste en una revisión general de cada poemario, en la que se observan algunas constantes o se realiza la segmentación del mismo, y en la segunda se concreta el análisis específico de los poemas que consideramos más representativos. / Tesis

Conventional on-chip (L1) data caches such as Direct-Mapped (DM) and 2-way Set-Associative Caches (SAC) have been widely used for high-performance uni (or multi)-processors. Unfortunately, these schemes suffer from high conflict misses since more than one address is mapped onto the same cache line. To reduce the conflict misses, much research has been done in developing different cache architectures such as 2-way Skewed-Associative cache (Skew cache). The 2-way Skew cache has a hardware complexity equivalent to that of 2-way SAC and has a miss-rate approaching that of 4-way SAC. However, the reduction in the miss-rate using a Skew cache is limited by the confined space available to disperse the conflicting accesses over small memory banks. This research proposes a dual-port data cache called Pseudo-Direct Cache (PDC) to minimize the conflict misses by dispersing addresses effectively over a single memory bank. Our simulation results show that PDC reduces those misses significantly compared to any conventional L1 caches and also achieves 10-15% lesser miss-rates than a 2-way Skew cache. SimpleScalar simulator is used for these simulations with SPEC95FP benchmark programs. Similar results were also seen over SPEC2000FP benchmark programs. Simulations over CACTI 3.0 were performed to evaluate the hardware implications of PDC over Skew cache. The simulation results show that the PDC has a simple hardware complexity similar to 2-way SAC and has 4-15% better AMAT compared to 2-way Skew cache. The PDC also reduces execution cycles significantly.

The functional oxides are performing materials showing interestant properties. The study of the local environment respect to the average struvture is essential for the deep understanding of the correlations between structure and properties ; this investigation of short and medium range can be performed with the use of solid state NMR techniques. In particular in this thesis three different classes of materials for applications in fields of optic and energy are considered : perovskite structure LaSrAlO4, the melilite system LaSr(Ga/Al)3O7 and the family of orthosylicates Li2(Fe/Mn)SiO4.

Los vates peruanos Carlos Oquendo de Amat y Luis Hernández se autoconfiguraron como poetas-niños a partir de su recuperación estética de la infancia como una instancia potencialmente creadora y afirmativa. Su propuesta estética común se sostuvo sobre dos pilares: el planteamiento de la inocencia y el juego como condiciones para la consumación de una plena creación artística y la asunción de una conciencia material, antropofágica y orgiástica sobre el lenguaje y la actividad creadora. Esto se evidencia en dos experimentos lúdicos que efectuaron para problematizar el concepto de obra orgánica, homogénea y acabada, central en el canon literario peruano del lapso 1920-1975: por un lado, la pueril fragmentación material de la obra de arte como si esta fuera un juguete; y por otro lado, la mezcla de diversos estilos artísticos comprendidos en un mismo nivel cual si fueran piezas de juego concretas desancladas de la historia y las individualidades. / Tesis

Esta tesis se propone elaborar un modelo de análisis a partir de la articulación entre la semiótica greimasiana y el psicoanálisis lacaniano. Además, queremos probar las posibilidades de este modelo en el análisis de la significación de la obra de dos poetas peruanos de principios del siglo XX, Alejandro Peralta y Carlos Oquendo. Esta articulación interdisciplinaria y metodológica se ubica entre la teoría de la enunciación propia de la primera disciplina mencionada, y las reflexiones sobre lo real que pertenecen a la segunda. El método empleado para constituir este modelo es aquel de la aproximación interdisciplinaria y de la búsqueda de una composibilidad sostenida en la revisión de los aspectos que permiten, en la semiótica, una incorporación razonable de la dimensión de lo real en el análisis del discurso y la observación de la orientación que Lacan ha realizado respecto de la categoría de la enunciación en el psicoanálisis. La principal conclusión a la que llegamos es que resulta posible inscribir la dimensión de lo real en el análisis semiótico del discurso a partir de una ampliación de la base modal de la praxis enunciativa y de introducir, en la semiótica, la noción lacaniana de letra como mediador entre dimensiones incomposibles. / This thesis aims to develop an analysis model based on the articulation between Greimasian semiotics and Lacanian psychoanalysis. In addition, we want to test the possibilities of this model in the analysis of the significance of the work of two Peruvian poets of the early twentieth century, Alejandro Peralta and Carlos Oquendo. This interdisciplinary and methodological articulation is located between the theory of enunciation belonging to the first discipline mentioned, and the reflections on the real that belong to the second. The method used to build this model is interdisciplinary approach and search for a sustained compossibility in the revision of the aspects that allow, in semiotics, a reasonable incorporation of the dimension of the real in the analysis of discourse and the observation of the orientation that Lacan has made regarding the category of enunciation in psychoanalysis. The main conclusion we reach is that it is possible to inscribe the dimension of the real in the semiotic analysis of discourse from an expansion of the modal basis of enunciative praxis and to introduce, in semiotics, the Lacanian notion of letter as mediator between incompossible dimensions.