This work aims to enhance the Ensemble Kalman Filter performance by transforming the non-Gaussian state variables into Gaussian variables to be a step closer to optimality. This is done by using univariate and multivariate Box-Cox transformation. Some History matching methods such as Kalman filter, particle filter and the ensemble Kalman filter are reviewed and applied to a test case in the reservoir application. The key idea is to apply the transformation before the update step and then transform back after applying the Kalman correction. In general, the results of the multivariate method was promising, despite the fact it over-estimated some variables.

<p>This thesis concerns dimensions and projections of sets that could be described as fractals. The background is applied problems regarding analysis of human tissue. One way to characterize such complicated structures is to estimate the dimension. The existence of different types of dimensions makes it important to know about their properties and relations to each other. Furthermore, since medical images often are constructed by x-ray, it is natural to study projections.</p><p>This thesis consists of an introduction and a summary, followed by three papers.</p><p>Paper I, Anders Nilsson, Dimensions and Projections: An Overview and Relevant Examples, 2006. Manuscript.</p><p>Paper II, Anders Nilsson and Peter Wingren, Homogeneity and Non-coincidence of Hausdorff- and Box Dimensions for Subsets of ℝ<i>n</i>, 2006. Submitted.</p><p>Paper III, Anders Nilsson and Fredrik Georgsson, Projective Properties of Fractal Sets, 2006. To be published in Chaos, Solitons and Fractals.</p><p>The first paper is an overview of dimensions and projections, together with illustrative examples constructed by the author. Some of the most frequently used types of dimensions are defined, i.e. Hausdorff dimension, lower and upper box dimension, and packing dimension. Some of their properties are shown, and how they are related to each other. Furthermore, theoretical results concerning projections are presented, as well as a computer experiment involving projections and estimations of box dimension.</p><p>The second paper concerns sets for which different types of dimensions give different values. Given three arbitrary and different numbers in (0,<i>n</i>), a compact set in ℝ<i>n</i> is constructed with these numbers as its Hausdorff dimension, lower box dimension and upper box dimension. Most important in this construction, is that the resulted set is homogeneous in the sense that these dimension properties also hold for every non-empty and relatively open subset.</p><p>The third paper is about sets in space and their projections onto planes. Connections between the dimensions of the orthogonal projections and the dimension of the original set are discussed, as well as the connection between orthogonal projection and the type of projection corresponding to realistic x-ray. It is shown that the estimated box dimension of the orthogonal projected set and the realistic projected set can, for all practical purposes, be considered equal.</p>

In Arabidopsis, the F-box gene family encodes a large number of proteins postulated to act as substrate selectors for proteasome-mediated protein degradation. Recent reports document the importance of F-box proteins in developmental and metabolic signaling. Our microarray analyses of inflorescences of the brevipedicellus(bp) mutant indicate several F-box proteins are upregulated, suggesting that BP represses these genes in wild type plants to condition normal inflorescence development. We undertook analyses to examine the function of these proteins and their contribution to the pleiotropic phenotypes of bp. Yeast-2-hybrid screens revealed that the F-box protein At1g80440 binds to phenylalanine ammonia lyase-1(PAL1), the gateway enzyme of phenylpropanoid metabolism. Transgenic lines driven by the 35S cauliflower mosaic virus were attained but could not be propagated, suggesting a fatal phenotype. BP driven F-box expression results in phyllotaxy defects, manifest as alterations in the emergence of inflorescence and floral meristems in the axils of some cauline leaves.

The European emission standard is an EU directive which describes what emission limits car manufactures are required to meet. In order to meet these requirements car manufacturers use different techniques and components. In a modern diesel automobile a Diesel Particulate Filter (DPF) is used to gather soot from the exhausts. As soot accumulates in the DPF, the back pressure increases and the capability to hold more soot decreases. Therefore the DPF continuously needs to get rid of the stored soot. The soot is removed through a process called regeneration. In order to optimize when to perform regeneration, it is vital to know the amount of soot in the filter. A method for estimating the soot mass in a DPF using a radio frequency-based sensor has been developed. The sensor that has been studied is the Accusolve soot sensor from General Electric. A parameter study has been performed to evaluate the parameters that affects the sensor’s output. Parameters that have been studied include positioning of the sensor, temperature in the DPF, flow rate through the DPF and distribution of soot in the DPF. Different models for estimation of soot mass in the DPF has been developed and analyzed. An uncertainty caused by removing the coaxial cable connectors when weighing the DPF has been identified and methods for minimizing this uncertainty has been presented. Results show that the sensor output is sensitive to temperature, soot distribution and position, and also show some sensitivity to the flow rate. An ARX model, with only one state, is proposed to estimate the soot mass in the DPF, since it gives the best prediction of soot mass and showed good resistance to bias errors and noise in all the input signals.

In Arabidopsis, the F-box gene family encodes a large number of proteins postulated to act as substrate selectors for proteasome-mediated protein degradation. Recent reports document the importance of F-box proteins in developmental and metabolic signaling. Our microarray analyses of inflorescences of the brevipedicellus(bp) mutant indicate several F-box proteins are upregulated, suggesting that BP represses these genes in wild type plants to condition normal inflorescence development. We undertook analyses to examine the function of these proteins and their contribution to the pleiotropic phenotypes of bp. Yeast-2-hybrid screens revealed that the F-box protein At1g80440 binds to phenylalanine ammonia lyase-1(PAL1), the gateway enzyme of phenylpropanoid metabolism. Transgenic lines driven by the 35S cauliflower mosaic virus were attained but could not be propagated, suggesting a fatal phenotype. BP driven F-box expression results in phyllotaxy defects, manifest as alterations in the emergence of inflorescence and floral meristems in the axils of some cauline leaves.

This thesis will discuss the emerging influence of film review aggregators and their effect on the changing landscape for reviews in the film industry. Specifically, this study will look at the top 150 domestic grossing films of 2010 to empirically study the effects of two specific review aggregators. A time-delayed approach to regression analysis is used to measure the influencing effects of these aggregators in the long run. Subsequently, other factors crucial to predicting film success are also analyzed in the context of sustained earnings.

This thesis attempts to render architectural agency and aesthetics within the typological discussion of the data center in the rural American landscape. The disciplinary question of the role of architecture and aesthetics in data center design is related to earlier examples of factories and warehouses during modernity. The data center alters the traditional representative role of architecture; they are massive, horizontal buildings that are only conceivable from an aerial perspective, driven by logistics and efficiency. This thesis engages these issues by focusing on the point at which the architectural and programmatic problems of the data center converge, the building form and envelope. This thesis engages the building envelope as an expanded surface that considers not only logistical and environmental issues, but also engages the social and political architectural questions related to the identity of the data center in the rural landscape.

Processes of industry and economic exchange have significantly and continually defined the underlying structure and formal characteristics of the American city. Contemporary ‘distributed’ systems of economy and industry rely on the movement of goods produced in distant locations (often overseas) to their eventual point of consumption. This has created a fundamental spatial disconnect between production, manufacturing, and consumption within the city; where local economies often have no relationship with the production or subsequent economic benefit of the goods they consume. As these contemporary systems of industrial production are often reliant on Just-In-Time operational models, the speed and turnover of consumption have become the dominant metrics of economic success. Productive industrial entities and territory, once ingrained in the inhabited city fabric have gradually disappeared; leaving behind smooth, frictionless surfaces of retail, logistics, and service, lacking a social viscosity, and consideration for the public dimension of the city. This thesis argues that Walmart, the archetypal big-box retailer, forms today’s dominant industrial actor; significantly influencing the socio-economic, cultural, and physical configurations of the American city. First, Walmart’s current distributed operational model is analyzed to better understand and contextualize the connections between industry, production, consumption, and urbanization. The next sections speculate upon the long-term social, economic, and environmental sustainability of Walmart’s strategy; while examining the links between social interaction, idea exchange, innovation, and physical proximity within the city. As a result of many factors, including rising energy costs, this project predicts, and then explores a future where distributed operational models are no longer viable. This thesis predicts a subsequent transformation in manufacturing and consumption within the United States; linked to a resurgence in domestic production, by emerging micro-production formats. This scenario, coupled with a stated goal or mandate by Walmart to reduce overall supply chain energy expenditure, presents a unique opportunity for a speculative, opportunistic architecture within the American city. Walmart 2.0 radically reconsiders Walmart’s existing operational model and related built infrastructures, in the creation of a new industrial system that seeks to re-inject systems of consumption, production, and exchange, back into the urban fabric. Walmart becomes an ‘open’, ‘for-hire’ underlying facilitator for the production, consumption, and movement of goods between local nodes of economy, using their existing expertise in logistical, territorial, and data management. As such, Walmart 2.0 acts as a physical and systemic platform for self-organising production and market exchanges that are facilitated, but not controlled by Walmart. A redevelopment of the generic Walmart Supercenter creates a system of participation; where local communities of Walmart 2.0 users both create and consume the content flowing through the Walmart 2.0 system; allowing these communities to engage in the economies of their own locale. Broadly, Walmart 2.0 seeks to provoke the emergence of an urban fabric with an engrained sensitivity towards human interactions in relation to systems of production, consumption and exchange. Further, the project seeks to illustrate a method of operation, through which architects may gain an increased agency within the powerful industrial systems shaping the underlying structure of the contemporary city; a method based on the analysis of existing industrial actors, and speculating upon their future transformations with a heightened social consideration.

RNA editing in trypanosomes is the post-transcriptional insertion or deletion of uridylates at specific sites in mitochondrial mRNAs. This process is catalyzed by a multienzyme, multisubunit complex through a series of enzymatic cycles directed by small, trans-acting RNA molecules. Despite impressive progress in our understanding of the mechanism of RNA editing and the composition of the editing complex, fundamental questions regarding RNP assembly and the regulation of catalysis remain. This dissertation presents studies of RNA-protein interactions between RNA editing complexes and substrate RNAs and the determination of substrate secondary structural determinants that govern them. Our results suggest that substrate association, cleavage and full-round editing by RNA editing complexes in vitro obey hierarchical determinants that increase in complexity as editing progresses and we propose a model for substrate recognition by RNA editing complexes. In addition, this dissertation also presents the characterization of a novel mitochondrial RNA helicase, named REH2 and its macromolecular interactions. Our data suggest that REH2 is intimately involved in interactions with macromolecular complexes that integrate diverse processes mediating mitochondrial gene expression. These results have implications for the mechanism of substrate RNA recognition by RNA editing complexes as well as for the integration of RNA editing to other facets of mitochondrial RNA metabolism.

Since the merge of global media, the usage of digital cable is becoming popular in Taiwan. Even though the development of digital cable is difficult, the cable companies realize it is necessary to promote digital cable. Therefore, how do the companies meet the needs of the enormous cable consumers. The first steps are to understand the characteristics of earlier users, focus on target consumers and control and the opportunities of market are definitely becoming very popular topics. This research is based on Rogers¡¦s ¡§Diffusion of Innovations Theory¡¨. It includes five types, profitability¡Bcompatibility¡Bcomplexity¡Busage¡Band observation. This research is to test whether the digital cable meets the characteristics of new technology media. It also discusses the characteristics of earlier adopters based on the change of population, socio-economic status, personality and the trend of media. At the same time, we also examine the difference of samples between 97 cable consumera and 198 non-cable consumers. This helps us to understand the innovation characteristics of earlier adopters. From this research we will discover the similar characteristics of digital cable and other new media technologies. The early adopters except in the population variable of marriage and the personality characteristic embodiment ability, the fate idea, risk withstanding and so on three kind of special characteristics with the non- user, socio-economic status and I communication behavior special characteristic, the two has reveals the difference, therefore we can know sex, the age, the education level, the income condition and communication pathway, user level in digital cable TV uses or not the key aspect. Moreover, this study find out domestic digital cable TV or relative industry can be their promoting reference, at the same time the researcher also give them suggestion for their research and relative research in the future.