Thesis (M.A.)--Miami University, Dept. of Communication, 2008. / Title from first page of PDF document. Includes bibliographical references (p. 97-105).

Dans le secteur des soins de santé, les données d'images médicales toujours croissantes, le développement de technologies d'imagerie, la conservation à long terme des données médicales et l'augmentation de la résolution des images entraînent une croissance considérable du volume de données. En outre, la variété des dispositifs d'acquisition et la différence de préférences des médecins ou d'autres professionnels de la santé ont conduit à une grande variété de données. Bien que la norme DICOM (Digital Imaging et Communication in Medicine) soit aujourd'hui largement adoptée pour stocker et transférer les données médicales, les données DICOM ont toujours les caractéristiques 3V du Big Data: volume élevé, grande variété et grande vélocité. En outre, il existe une variété de charges de travail, notamment le traitement transactionnel en ligne (en anglais Online Transaction Processing, abrégé en OLTP), le traitement analytique en ligne (anglais Online Analytical Processing, abrégé en OLAP) et les charges de travail mixtes. Les systèmes existants ont des limites concernant ces caractéristiques des données et des charges de travail. Dans cette thèse, nous proposons de nouvelles méthodes efficaces pour stocker et interroger des données DICOM. Nous proposons un modèle de stockage hybride des magasins de lignes et de colonnes, appelé HYTORMO, ainsi que des stratégies de stockage de données et de traitement des requêtes. Tout d'abord, HYTORMO est conçu et mis en œuvre pour être déployé sur un environnement à grande échelle afin de permettre la gestion de grandes données médicales. Deuxièmement, la stratégie de stockage de données combine l'utilisation du partitionnement vertical et un stockage hybride pour créer des configurations de stockage de données qui peuvent réduire la demande d'espace de stockage et augmenter les performances de la charge de travail. Pour réaliser une telle configuration de stockage de données, l'une des deux approches de conception de stockage de données peut être appliquée: (1) conception basée sur des experts et (2) conception automatisée. Dans la première approche, les experts créent manuellement des configurations de stockage de données en regroupant les attributs des données DICOM et en sélectionnant une disposition de stockage de données appropriée pour chaque groupe de colonnes. Dans la dernière approche, nous proposons un cadre de conception automatisé hybride, appelé HADF. HADF dépend des mesures de similarité (entre attributs) qui prennent en compte les impacts des informations spécifiques à la charge de travail et aux données pour générer automatiquement les configurations de stockage de données: Hybrid Similarity (combinaison pondérée de similarité d'accès d'attribut et de similarité de densité d'attribut) les attributs dans les groupes de colonnes; Inter-Cluster Access Similarity est utilisé pour déterminer si deux groupes de colonnes seront fusionnés ou non (pour réduire le nombre de jointures supplémentaires); et Intra-Cluster Access La similarité est appliquée pour décider si un groupe de colonnes sera stocké dans une ligne ou un magasin de colonnes. Enfin, nous proposons une stratégie de traitement des requêtes adaptée et efficace construite sur HYTORMO. Il considère l'utilisation des jointures internes et des jointures externes gauche pour empêcher la perte de données si vous utilisez uniquement des jointures internes entre des tables partitionnées verticalement. De plus, une intersection de filtres Bloom (intersection of Bloom filters, abrégé en ) est appliqué pour supprimer les données non pertinentes des tables d'entrée des opérations de jointure; cela permet de réduire les coûts d'E / S réseau. (...) / In the health care industry, the ever-increasing medical image data, the development of imaging technologies, the long-term retention of medical data and the increase of image resolution are causing a tremendous growth in data volume. In addition, the variety of acquisition devices and the difference in preferences of physicians or other health-care professionals have led to a high variety in data. Although today DICOM (Digital Imaging and Communication in Medicine) standard has been widely adopted to store and transfer the medical data, DICOM data still has the 3Vs characteristics of Big Data: high volume, high variety and high velocity. Besides, there is a variety of workloads including Online Transaction Processing (OLTP), Online Analytical Processing (OLAP) and mixed workloads. Existing systems have limitations dealing with these characteristics of data and workloads. In this thesis, we propose new efficient methods for storing and querying DICOM data. We propose a hybrid storage model of row and column stores, called HYTORMO, together with data storage and query processing strategies. First, HYTORMO is designed and implemented to be deployed on large-scale environment to make it possible to manage big medical data. Second, the data storage strategy combines the use of vertical partitioning and a hybrid store to create data storage configurations that can reduce storage space demand and increase workload performance. To achieve such a data storage configuration, one of two data storage design approaches can be applied: (1) expert-based design and (2) automated design. In the former approach, experts manually create data storage configurations by grouping attributes and selecting a suitable data layout for each column group. In the latter approach, we propose a hybrid automated design framework, called HADF. HADF depends on similarity measures (between attributes) that can take into consideration the combined impact of both workload- and data-specific information to generate data storage configurations: Hybrid Similarity (a weighted combination of Attribute Access and Density Similarity measures) is used to group the attributes into column groups; Inter-Cluster Access Similarity is used to determine whether two column groups will be merged together or not (to reduce the number of joins); and Intra-Cluster Access Similarity is applied to decide whether a column group will be stored in a row or a column store. Finally, we propose a suitable and efficient query processing strategy built on top of HYTORMO. It considers the use of both inner joins and left-outer joins. Furthermore, an Intersection Bloom filter () is applied to reduce network I/O cost.We provide experimental evaluations to validate the benefits of the proposed methods over real DICOM datasets. Experimental results show that the mixed use of both row and column stores outperforms a pure row store and a pure column store. The combined impact of both workload-and data-specific information is helpful for HADF to be able to produce good data storage configurations. Moreover, the query processing strategy with the use of the can improve the execution time of an experimental query up to 50% when compared to the case where no is applied.

Energy conservation is a major concern in todays data centers, which are the 21st century data processing factories, and where large and complex software systems such as distributed data management stores run and serve billions of users. The two main drivers of this major concern are the pollution impact data centers have on the environment due to their waste heat, and the expensive cost data centers incur due to their enormous energy demand. Among the many subsystems of data centers, the storage system is one of the main sources of energy consumption. Among the many types of storage systems, key/value stores happen to be the widely used in the data centers. In this work, I investigate energy saving techniques that enable a consistent hash based key/value store save energy during low activity times, and whenever there is an opportunity to reuse the waste heat of data centers.

Diploma thesis deals with the basic description of cardiac muscle cells, the mechanism of its contraction and events associated with contractions. There are different types of methods which can be used for measuring of contractions and for evaluation of cell length. This work describe these methods and evaluate their pros and cons. Based on available information and technical possibilities is one of the methods chosen and used for the design of block diagram system for measuring of contraction of isolated heart cells in real time. The practical part of this diploma thesis deals with the designing of a system which allows processing the image of isolated cardiac muscle cells that facilitate the detection of the cells edge. For this purpose it was created a device that allows the user to select a single row from television signal containing the image information from a location where is the currently selected row. Thus obtained image information can be used for cells edge detection and measuring of its length and contractions.

The main aim of this master's thesis is innovative approach to design of self propelled sprayer with technical, esthetic, ergonomic and economic demands. The final design with it's modern and functional look should be an attractive element of agrotechnics. Another aim is also to fulfill social and psychological functions and address the public about protection of cultivated crops with emphasis on alternative energy and other uses of agricultural machinery.

Energy conservation is a major concern in todays data centers, which are the 21st century data processing factories, and where large and complex software systems such as distributed data management stores run and serve billions of users. The two main drivers of this major concern are the pollution impact data centers have on the environment due to their waste heat, and the expensive cost data centers incur due to their enormous energy demand. Among the many subsystems of data centers, the storage system is one of the main sources of energy consumption. Among the many types of storage systems, key/value stores happen to be the widely used in the data centers. In this work, I investigate energy saving techniques that enable a consistent hash based key/value store save energy during low activity times, and whenever there is an opportunity to reuse the waste heat of data centers.

<p>У овом раду спроведене су опсежна експериментална и нумеричка<br />испитивања понашања веза са чеоном плочом и четири завртња у реду,<br />као и карактеристичне компоненте ових веза - Т-елемента.<br />Експериментална испитивања укључују тестирања 36 узорака<br />Т-елемената у природној величини, као и четири везе греда-стуб са<br />чеоном плочом и четири завртња у реду, такође у природној величини.<br />Нумеричке анализе, спроведене у софтверском пакету ABAQUS, су<br />обухватале све типове нелинеарности, али и отказ материјала, те се као<br />такве сврставају међу ретке којима су слични проблеми нумерички<br />испитивани. Параметарска студија обухвата 33 различите конфигурације<br />Т-елемената са четири завртња и представља највећу такву студију<br />изведену за ову компоненту. Као основни још увек нерешен проблем,<br />круцијалан за понашање Т-елемената, препознати су положај сила услед<br />ефеката полуге, али и савијање завтњева. Приказан је и предложен нови<br />аналитички модел прорачуна носивости Т-елемената са четири завртња,<br />и квантификована његова предност над до сада постојећим моделима.</p> / <p>U ovom radu sprovedene su opsežna eksperimentalna i numerička<br />ispitivanja ponašanja veza sa čeonom pločom i četiri zavrtnja u redu,<br />kao i karakteristične komponente ovih veza - T-elementa.<br />Eksperimentalna ispitivanja uključuju testiranja 36 uzoraka<br />T-elemenata u prirodnoj veličini, kao i četiri veze greda-stub sa<br />čeonom pločom i četiri zavrtnja u redu, takođe u prirodnoj veličini.<br />Numeričke analize, sprovedene u softverskom paketu ABAQUS, su<br />obuhvatale sve tipove nelinearnosti, ali i otkaz materijala, te se kao<br />takve svrstavaju među retke kojima su slični problemi numerički<br />ispitivani. Parametarska studija obuhvata 33 različite konfiguracije<br />T-elemenata sa četiri zavrtnja i predstavlja najveću takvu studiju<br />izvedenu za ovu komponentu. Kao osnovni još uvek nerešen problem,<br />krucijalan za ponašanje T-elemenata, prepoznati su položaj sila usled<br />efekata poluge, ali i savijanje zavtnjeva. Prikazan je i predložen novi<br />analitički model proračuna nosivosti T-elemenata sa četiri zavrtnja,<br />i kvantifikovana njegova prednost nad do sada postojećim modelima.</p> / <p>In this research, extensive experimental and numerical investigations of<br />behaviour of end-plate moment connection with four bolts per row are<br />performed, as well as specific component of the connection &ndash; T-stub element.<br />Experimental research comprises tests on 36 unscaled specimens of T-stub<br />elements and 4 specimens of beam-to-column joints with end-plate connection<br />and four bolts per row, also in full-size. Numerical analyses, performed with<br />software ABAQUS, included all types of nonlinearities, and material<br />deterioration, hence they can be considered as one of the few most<br />sophisticated analyses used for investigation of the considered problem. The<br />parametric study comprises 33 different configurations of the T-stub element<br />with four bolts per row and it presents the biggest study of this kind for this type<br />of component. Bending of the bolts and position of the prying forces are<br />recognized as the largest, still unsolved problem, crucial for the behavior of the<br />T-stub elements. A new theoretical model for the resistance of the T-stub<br />element with four bolts per row is proposed and its advantage over the existing<br />models is presented and quantified.</p>

No description available.

A review of available corn relative maturity groups in Mississippi shows a limited range of maturity groups in use. Research focusing on expanding the range of maturity groups was conducted in MS in 2015 and 2016. Along with expanded maturity groups, treatments of fertilizer (10-34-0), foliar zinc, and a plant hormone blend were studied to shorten the growing season. Four site years in MS were studied to determine optimal plant maturity group and treatment for length of season. The results showed decreased yield of 0.09-0.15 Mg ha-1 (1.5-2.3 bu ac-1) for each day of decreasing relative maturity in three of four site years. The addition of starter fertilizer increased vegetative growth stage, plant height V5 and V7, SPAD values at V5, and significantly decreases days to tassel and silking reproductive growth stages but did not affect yield.

[Preface]:In 1862 Grahamstown acquired the dignity, pride and responsibility of full municipal status by its own Act of Incorporation. Ibis Act marked the consolidation of Grahamstown's era of local government by its vigorous and far-sighted Municipal Board of Commissioners, which was established in 1837 and has been examined in depth in K.S. Hunt's thesis on Grahamstown municipal government up to 1862. Clearly, the year 1862 is the logical beginning for a further study of Grahamstown's changing position in the Eastern Cape and its development in the practice of local government during the crucial decades of the 1860's and 1870's. But the choice of 1882 to mark the end of this thesis is in some ways arbitrary. 1882 does not appear to be a turning point, a year of major significance in either the history of Grahamstown or of the Colony as a whole. Besides the convenient time-span of twenty years, there are various factors which, taken together, explain why 1882 is a useful date of demarcation from which to take stock and review Grahamstown's economic, political, social and municipal position after two vital decades in its history. In the civic sphere,the opening of Grahamstown's Town Hall made tangible,in solid Victorian design,a long held ambition of the City Councillors. Buildings, in Victorian attitudes, throughout the British Empire, were regarded as very important civic symbols. One can learn much of Grahamstown Victorian attitudes from the lengthy process of attaining a Town Hall. A much more elaborate ceremony surrounded the opening of the Jubilee Tower, an occasion for assessing the influence of Grahamstown's Settler heritage on the development of the town. Municipal problems concerning finance, water and "native" locations remained thorny questions as they had throughout the period 1862-32. Generally 1882 was a year of transition for Grahamstown and the Colony as a whole. Economically it appeared to start prosperously but 1882 actually marked the beginning of a severe depression which lasted until 1386. It is important to consider how Grahamstown’s economic development relates to the overall economic picture of the Cape Colony at this juncture. Though ostrich feather prices remained high in 1882, the ensuing depression was caused partly by the rapid overexpansion of the industry but most important of all, by a reaction to an inflated era of confidence during the diamond boom years of the 1870's and their consequent easy Bank credit plus intense speculation. Politically 1882 also appeared a year of transition. How to maintain the uneasy peace after the Basuto war remained a constant challenge to Scanlen's ministry. The beginnings of active party conflict in the workings of responsible government were evident only in embryo. The rapid growth of the Afrikaner Bond was to change this. Specifically in relation to the practice of local government in the Cape Colony, the General Municipal Act No. 45 was passed during the Parliamentary session of 1882, enabling any town to seek incorporation. The query is raised as to how far the modus vivendi of the Grahamstown municipality helped frame the clauses of this general Municipal enabling Act. For these various reasons, as well as the additional one that twenty years was found to offer a manageable research unit, 1882 has been decided on as the limit of this thesis. This thesis aims, through a careful examination of Grahamstown's economic, political but particularly civic development, to determine and trace the nature of the Grahamstown community's response to the challenge of the gradual isolation of the 1860's and 1870's. Grahamstown's civic history provides fascinating insights into the structure of the entire community and its attitudes and values. Study has been made of the following major primary sources for the history of Grahamstown 1862-1882: the Grahamstown Municipality records, complete except for incoming letters and housed in the Cape Archives, und the Grahamstown newspapers for the period. The most prolific as well us the most valuable newspaper source of the period is The Grahamstown Journal, a newspaper with a tradition firmly bound up with the formulation of frontier as well as Grahamstown thought, kingpin of the network built up by the successors of Robert Godlonton, the "architect of frontier opinion". It has to be treated with caution as a source because of this very bias. The Council Minutes themselves, meticulously recorded in the Town Clerk's copperplate Victorian script, are scrupulously objective, recording blandly proposers, seconders and fates of motions. What might appear the bare bones of a detailed study of the municipal records yet reflects the economic climate of the town, political opinions, class and race attitudes, civic pride, concepts of public health and charity. The newspapers are a vital addition to the Municipal records themselves. The weekly meetings received faithful, accurate and very copious coverage from press-representatives present at every ordinary meeting. Indeed these reports give a vivid immediacy to the meetings and reveal opinions, pressure groups and lines of conflict within the Council, on issues important and trivial. These, at times lively and enlivening, sometimes stormy meetings, are reported with an authenticity which makes one suspect that often words of speeches were given verbatim - personalities of the Councillors certainly emerge distinctly. Full newspaper coverage is also given to the meetings of the Albany Divisional Council. The annual reports of the Civil Commissioners and Resident Magistrates, which appear in the Parliamentary Blue Books of the period, provide some valuable economic comment on the vicissitudes of life in the eastern frontier districts from 1862-1882. Such information builds useful background for a study of Grahamstown's economic and social development. Efforts have been made to locate probable sources of family papers of one of the most influential Grahamstown families of the period, the Wood family, but to no avail. If any exist they would without doubt have given interesting insight into the business connections of leading Grahamstown men and possibly given an indication of how far civic and political connections linked with religious and family influences in Victorian Grahamstown. Jim's Journal, manuscript in Cory Library, is a record of letters sent home to England by James Butler, while on a visit to the Cape,1876-79 for his health. He provides illuminating glimpses into the day to day life of Grahamstown from a Quaker viewpoint. Taken together, these sources provide considerable insights into the life and times of Grahamstown in the second half of the nineteenth Century. A municipal study examines an area in its totality: it encompasses a study of minutiae within the context of general trends. This fact alone suggests that there are many sources on the history of Grahamstown which have not yet been discovered, but this assessment is submitted on the basis of a thorough study of those which are currently available.