Dermatofibrosarcoma protuberans (DFSP) is a locally aggressive, rarely metastatic, spindle cell tumor. It is most commonly found on the trunk and rarely on the head and neck. Recurrence has been found to be more common in the head and neck region, which may be attributable to delayed patient presentation or a reluctance for wide excision in that region. The authors report a rare case of DFSP presenting as a large mass of the face. Surgical treatment required aggressive local resection of the tumor, including the underlying maxillary antrum. The soft tissue was cleared by Mohs technique. More than one procedure was required to obtain clear bone margins. Adjuvant radiation therapy was used to gain local control. Reconstruction was performed using a cheek advancement flap, as well as a forehead flap and split-thickness graft to the donor site.

It is reconstruction and extension of a threefloor building of a winery in the center of village Kobyli. The proposal consists of expansion of capacity of wine production and storage. It is making spaces for presentation od the winery and a larger conference space. In the third floor there are nine rooms with own bathroom each. With capacity for 20 persons.

From the early days as a Spanish colony Texas attracted settlers with the promise of cheap fertile land. During the period of Mexican control the population of Texas increased and a desire for public education manifested among the people. Through the end of the Civil War government in Texas never provided an adequate means for educating the children of the region. Even when funds became available with the Compromise of 1850 the state only established a school fund to help offset the costs of education, but did not provide a public school system. The first truly successful attempt at mass education in Texas came after the Civil War with the work of the Freedmen’s Bureau. The bureau helped the former slaves adjust to the emerging post war society through a variety of means such as education. In spite of its short existence the bureau managed to educate thousands of African Americans. By 1870 the former slaves wanted more education for their children, and Texans of all races began to see the need for a public school system. This study focuses on Republican efforts during Reconstruction to establish a public school system in Texas to meet the educational needs of its children. An analysis of data from county, state, and federal records forms the basis of this study. The data suggests that Republican efforts were hampered by the opposition of Texans to high taxes, compulsory education, racism, and animosity toward that party for emancipation and Civil War.

Yes / Peacebuilding, as a remedy for all the ailments afflicting any society emerging from war, has placed this complex and overloaded concept at the centre of a growing network of actors engaged in its formulation and implementation. This paper critically examines the implications of a growing convergence in definitions and approaches amongst this `international post-war peacebuilding community'.

Thesis (Ed.D.)--Boston University / PLEASE NOTE: Boston University Libraries did not receive an Authorization To Manage form for this thesis or dissertation. It is therefore not openly accessible, though it may be available by request. If you are the author or principal advisor of this work and would like to request open access for it, please contact us at open-help@bu.edu. Thank you. / This is a study of the social content of 50 Readers used in the education of young American students during the Reconstruction Era, 1863-1877. Analyses of social content from every tenth page of text reveal themes that emerge from a framework of nine categories-character, religion, nature, nation, other cultures, family, education, gender/class, adventure/fantasy-that define the nation. In addition to these analyses, the study presents one Reader in its entirety and two Readers written especially for the freedmen. Plentiful selections from the Readers allow users of the study to arrive at their own conclusions about how well or how poorly the Reconstruction-era Readers were guiding future directions. The fundamental finding is that nineteenth-century Americans believed that moral character was the bedrock of the nation and that it needed to be fostered in the young. / 2999-01-01

Phylogenetics is a field primarily concerned with the reconstruction of the evolutionary history of present day species. Evolutionary history is often modeled by a phylogenetic tree, similar to a family tree. To recreate a phylogenetic tree from information about current species, one needs to make assumptions about the evolutionary process. These assumptions can range from full parametrised models of evolution to simple observations. This thesis looks at the reconstruction of phylogenetic trees under two different assumptions. The first, known as the ordinal assumption, has been previously studied and asserts that as species evolve, they become more dissimilar. The second, the convex assumption, has not previously been studied in this context and asserts that changes species go through to become dissimilar are progressively larger than the current differences between those species. This thesis presents an overview of mathematical results in tree reconstruction from dissimilarity maps (also known as distance matrices) and develops techniques for reasoning about the ordinal and convex assumptions. In particular, three main results are presented: a complete classification of phylogenetic trees with four leaves under the ordinal assumption; a partial classification of phylogenetic trees with four leaves under the convex assumption; and, an independent proof of a result on the relationship between ultrametrics and the ordinal assumption.

This thesis investigates the topological reconstruction problem, which is inspired by the reconstruction conjecture in graph theory. We ask how much information about a topological space can be recovered from the homeomorphism types of its point-complement subspaces. If the whole space can be recovered up to homeomorphism, it is called reconstructible. In the first part of this thesis, we investigate under which conditions compact spaces are reconstructible. It is shown that a non-reconstructible compact metrizable space must contain a dense collection of 1-point components. In particular, all metrizable continua are reconstructible. On the other hand, any first-countable compactification of countably many copies of the Cantor set is non-reconstructible, and so are all compact metrizable h-homogeneous spaces with a dense collection of 1-point components. We then investigate which non-compact locally compact spaces are reconstructible. Our main technical result is a framework for the reconstruction of spaces with a maximal finite compactification. We show that Euclidean spaces ℝⁿ and all ordinals are reconstructible. In the second part, we show that it is independent of ZFC whether the Stone-Čech remainder of the integers, ω*, is reconstructible. Further, the property of being a normal space is consistently non-reconstructible. Under the Continuum Hypothesis, the compact Hausdorff space ω* has a non-normal reconstruction, namely the space ω*\{p} for a P-point p of ω*. More generally, the existence of an uncountable cardinal κ satisfying κ = κ^<κ implies that there is a normal space with a non-normal reconstruction. The final chapter discusses the Stone-Čech compactification and the Stone-Čech remainder of spaces ω*\{x}. Assuming the Continuum Hypothesis, we show that for every point x of ω*, the Stone-Čech remainder of ω*{x} is an ω₂-Parovičenko space of cardinality 2^{2^c} which admits a family of 2^c disjoint open sets. This implies that under 2^c = ω₂, the Stone-Čech remainders of ω*\{x} are all homeomorphic, regardless of which point x gets removed.

La décennie 1994-2004 est d’une importance majeure pour l’Afrique du Sud nouvellement démocratique. Au cours de cette période, le pays jette les bases de sa reconstruction à travers la mise en place de réformes politiques, économiques et sociales afin de combattre les méfaits de quarante années d’apartheid et de poser les jalons de son développement. Dans ce contexte, les médias internationaux ont porté une attention particulière à ces nombreux changements, plus spécifiquement la presse écrite canadienne et britannique, en particulier le Globe and Mail et le Times. Notre mémoire s’intéresse donc au traitement fait par ces deux quotidiens, l’un torontois l’autre londonien, de la reconstruction sud-africaine et ce, à travers l’analyse de thèmes précis et de ses réformes marquantes. Il sera plus spécifiquement question des réformes politiques et constitutionnelles avec la figure de Nelson Mandela, héros de la lutte contre l’apartheid, père de la « nation arc-en-ciel » ainsi que celle de son successeur à la présidence sud-africaine en 1999, Thabo Mbéki. Aussi, la Commission Vérité et Réconciliation et la nouvelle Constitution, toutes deux mises en place durant l’année 1996 sont majeures puisqu’elles dictent la nouvelle identité donnée au pays. Les réformes socioéconomiques de la reconstruction ont également attirés l’attention de nos deux journaux. Particulièrement, nous analyserons les points de vue de ceux-ci concernant le Reconstruction and Development Programme (RDP) ainsi que de la « discrimination positive » et du Black Economic Empowerment (BEE), deux mesures censées contribuer à l’amélioration de la qualité de vie de la population et à effacer les profondes inégalités socioéconomiques léguées par l’apartheid. Or, cet espoir d’une vie meilleure laisse rapidement place à un désenchantement. La forte criminalité et la dramatique explosion du VIH-sida dans une nouvelle Afrique du Sud qui cherche à se reconstruire a beaucoup retenu l’attention du Globe and Mail et du Times. Ces deux défis de taille s’avèrent être l’envers de la médaille du miracle sud-africain et ne manquent pas d’attirer l’attention des deux journaux, mettant clairement en évidence les « ratés » socioéconomiques » de la reconstruction.

Ryanodine receptors (RyR) are intracellular channels that are intricately involved in Ca2+ release. These channels large membrane proteins~2.26MDa in size. In this multi-goal project firstly we successfully studied the gating mechanics of the RyR1 in the presence of Mg2+. We used single particle reconstruction and image processing techniques to obtain the 3D structure of the RyR1 with Mg2+. The 3D structure in the presence of Mg2+ and an ATP analog is the closest representation of human physiological conditions. The open and closed state structures of RyR1 are known. However, the physiologically closed state has not been studied before. Understanding this structure will help in the understanding of protein interactions. Our second goal was the validation of this 3D structure under different levels of noise. Validation under different noise levels analyzed the problem of noise bias is present in the field of cryo-EM and single particle reconstruction in select cases.

Ce travail de thèse propose une méthode générale de reconstruction de défauts. Cette méthode donne un aperçu sur le problème d’observabilité des entrées inconnues. Par la suite, une méthodologie de détection et d’isolation de défauts capteurs et actionneurs est proposée. Le schéma de FDI est basé sur une banque d’observateurs. L’implémentation de cette méthode pour un modèle ASM1 réduit conduit à une table de signature fortement localisante.La deuxième partie porte sur la problématique de « l’observation des systèmes non linéaires ». Le filtre de Kalman étendu (FKE) est l’un des observateurs les plus largement utilisé à cette fin. Cependant, la convergence de cet observateur n’est pas prouvée. Lorsque le FKE est appliqué à un système mis sous une forme canonique d’observabilité, il acquiert, des propriétés de convergence exponentielle globales. Cependant, ce dernier entraine une amplification de bruit. Afin de combiner l’efficacité d’un FKE en termes de lissage de bruit, et la réactivité d’un OKE grand gain face aux larges variations, [Boizot et al., 2010] ont proposé un observateur adaptatif. Ainsi, cet observateur est appliqué au système non-linéaire MIMO d’une station d’épuration biologique. Une étude comparative entre ces trois observateurs est menée afin de mettre en évidence la pertinence de l’observateur adaptatif. / This thesis proposes a general methodology for identifying and reconstructing sensor faults on dynamical processes. This identification theory provides a general framework for the problem of "observability with unknown inputs". Next, a framework for fault detection and isolation of sensors and actuators is proposed. The FDI sheme is based on bank of high-gain observers. A simulation study of a waste water treatment plant shows the effectiveness of the proposed approach.The second point evoked in the thesis is the observability of nonlinear dynamic systems and state estimation. The Extended Kalman Filter (EKF) is a widely used observer for such nonlinear systems. However, it suffers from the lack of theoretical justifications. The EKF, when applied to a system put in a normal form of observability, it acquires the property of global exponential convergence. Unfortunately, this latter observer (HG-EKF) is very sensitive to measurement noise. In order to combine the behaviors of the EKF (efficiency with respect to noise smoothing) and of the HG-EKF (reactivity to large estimation errors), (Boizot et al, 2010) proposed an adaptive high gain observer. This observer is applied to a MIMO nonlinear system of an Activated Sludge Process. A comparison study of the performances of the three observers under consideration is carried out. Results show a clearly better state estimation for the adaptive observer.