189,930 research outputs found

    Simple drag prediction strategies for an Autonomous Underwater Vehicle’s hull shape

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    The range of an AUV is dictated by its finite energy source and minimising the energy consumption is required to maximise its endurance. One option to extend the endurance is by obtaining the optimum hydrodynamic hull shape with balancing the trade-off between computational cost and fluid dynamic fidelity. An AUV hull form has been optimised to obtain low resistance hull. Hydrodynamic optimisation of hull form has been carried out by employing five parametric geometry models with a streamlined constraint. Three Genetic Algorithm optimisation procedures are applied by three simple drag predictions which are based on the potential flow method. The results highlight the effectiveness of considering the proposed hull shape optimisation procedure for the early stage of AUV hull desig

    Copyhold tenure and its survival in Holderness, in the East Riding of Yorkshire from c.1750 to 1925

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    Available from British Library Document Supply Centre- DSC:DXN059653 / BLDSC - British Library Document Supply CentreSIGLEGBUnited Kingdo

    [Letter from Wm. C. Hull to Sam Russell - January 24, 1945]

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    A letter written to Honorable Sam Russell, from Wm. C. Hull, Executive Assistant, United States Civil Service Commission dated January 24, 1945. Hull makes reference to the interest shown by Russell in Mr. T. N. Carswell concerning the grades and pay of Clerical Audit Supervisors and advises of the limitations provided under the Classification Act of 1923

    Political correspondence relating to Kingston-upon-Hull, 1678-1835

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    This study covers aspects of political life at Kingston-upon-Hull between 1678 and 1835, and is part history and part edition. The historical section is an essay on the character and course of Hull politics between these dates. The edition on which that essay is based, consists of a selection from the surviving correspondence. The resulting picture is fragmentary, but it does contribute to our understanding of Hull at that time. The years 1678 to 1835 were marked by a political stability at Hull established during the first ten years and challenged only during the concluding five. Until the mid 1830's local political power was held by a merchant-maritime oligarchy which in times of need called upon local magnates who served the town as High Stewards. The Crown had some influence at Hull, as it was a garrison town and port; but the town corporation, Trinity House, Dock Company, and a number of wealthy families, some of whom had reached gentry status, held the monopoly of political influence. The freeman electorate was large, and as elections approached, unregistered voters pressed the Bench for their franchise. Some attempt was made by the corporation to restrict this. The paying of polling money was almost inevitable, especially in the later eighteenth century, and wise candidates also contributed to local charities, clubs and racing plates. Members of Parliament kept the town fully informed of national political issues especially up to about 1710. From then until the late 1760's the members seem less assiduous in their correspondence, and also in their performance in the Commons. Between 1766 and 1820 the Rockingham Fitzwilliam interest returned many personal nominees, and the quality of many of the members rose. These Whig magnates did not, however, have a monopoly at Hull. Wilberforce stood as an independent and later several government, or perhaps Tory candidates, were returned. Closely contested and expensive elections were common after 1796. Threats from Jacobites and American privateers, with the possibility of a French invasion, caused local political squabbles, but the French danger may have helped prevent the spread of revolutionary societies and Radicalism was really born in Hull in 1818 with the Political Protestants. However it played some part in turning Hull Whig/Liberal opinion against Liverpool's Tory government. The 1830's, with the campaign for the Reform and Municipal Corporation Acts, led to a crystallisation of local political parties which culminated in the defeat of the Tory corporation in the municipal election of 1835. The activities of the radical Acland added to the political strife, but he overplayed his hand. The stability created by conflict in the 1680's was transformed by conflict in the 1830's. The intervening years thus have some unity

    The Humber Outport: Lloyd’s Register in the Port of Hull since c.1760.

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    For over 260 years, Lloyd’s Register has worked to preserve life and property at sea. Throughout that time, the Society has maintained an active presence in its outports, one being Hull. By taking the uncharted connections between Lloyd’s Register and its Humber outport as a case study, this thesis investigates the work of the Society in the outports, and the extent to which it was involved with key industries and businesses in such ports. It also studies the importance of the outports to the institutional aims of the Society, as well as assessing the extent to which such goals were aided by its work in Hull.Lloyd’s Register has garnered little historiographical attention. Moreover, a London-centric focus dominates this limited historiography. By analysing the Society’s historical connections to Hull, and its involvement in some of the port’s key maritime industries and businesses, this research fills a significant gap in the historiography on Lloyd’s Register. The investigation draws upon underutilised primary source material from Lloyd’s Register Foundation Heritage and Education Centre in combination with parliamentary and institutional records. This material is deployed to address three overarching research questions: how did Lloyd’s Register operate in a provincial port like Hull? Did the involvement of Lloyd’s Register in outports extend beyond the Society’s work in surveying and classification? How important were provincial ports to the goals of Lloyd’s Register? The analysis sheds lights on the operational activity of the Society in Hull, and the scale of Lloyd’s Register’s presence in the port, as well as evaluating the influence such ports had on the Society. The thesis reveals that Hull has been a particularly important port in the history of the Society, and the connections that date back over 260 years could still be seen in and around Hull into the 2020s

    The Humber Outport: Lloyd’s Register in the Port of Hull since c.1760.

    No full text
    For over 260 years, Lloyd’s Register has worked to preserve life and property at sea. Throughout that time, the Society has maintained an active presence in its outports, one being Hull. By taking the uncharted connections between Lloyd’s Register and its Humber outport as a case study, this thesis investigates the work of the Society in the outports, and the extent to which it was involved with key industries and businesses in such ports. It also studies the importance of the outports to the institutional aims of the Society, as well as assessing the extent to which such goals were aided by its work in Hull.Lloyd’s Register has garnered little historiographical attention. Moreover, a London-centric focus dominates this limited historiography. By analysing the Society’s historical connections to Hull, and its involvement in some of the port’s key maritime industries and businesses, this research fills a significant gap in the historiography on Lloyd’s Register. The investigation draws upon underutilised primary source material from Lloyd’s Register Foundation Heritage and Education Centre in combination with parliamentary and institutional records. This material is deployed to address three overarching research questions: how did Lloyd’s Register operate in a provincial port like Hull? Did the involvement of Lloyd’s Register in outports extend beyond the Society’s work in surveying and classification? How important were provincial ports to the goals of Lloyd’s Register? The analysis sheds lights on the operational activity of the Society in Hull, and the scale of Lloyd’s Register’s presence in the port, as well as evaluating the influence such ports had on the Society. The thesis reveals that Hull has been a particularly important port in the history of the Society, and the connections that date back over 260 years could still be seen in and around Hull into the 2020s

    Podcast about the C-BAss Competence-Based curriculum development framework

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    In this we discuss curriculum development, Assessment, C-BAss

    The lichen flora of Hull, with particular reference to zonal distribution and environmental monitoring

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    YesThe role of lichens as environmental monitors is widely recognised. Not only are they valuable as indicators of habitat stability and enyironmental continuity, but they are also effectiye in monitoring environmental quality. more particularly air and soil (and more recently water) pollution. In the past. the main role of lichens in this context has been to monitor sulphur dioxide air pollution. especially stable and rising levels (Seaward 1993). Howeyer, it has also been shown that lichens arc effective monitors of falling levels of gaseous sulphur dioxide and indeed of other pollutants. some of which are manifesting themselves as a consequence of the reduction in the former; of particular interest in this respect is the use of lichens to detect and determine the extent of qualitative changes in air pollution such as the impact of acid rain and hypertrophication (Seaward 1997: Seaward & Coppins 2(04)

    Podcast about the C-BAss Competence-Based curriculum development framework

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    In this we discuss curriculum development, Assessment, C-BAss

    Analysis on the hull girder ultimate strength of a bulk carrier using simplified method based on an incremental-iterative approach

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    The hull girder ultimate strength of a typical bulk carrier is analyzed using a simplified method based on an incremental-iterative approach. First, vertical bending moment is examined by seven different methods. The moment versus curvature curves and the values of the ultimate longitudinal moments at collapse states are determined for both hogging and sagging cases. Second, the ultimate strength under coupled vertical and horizontal bending moment is accounted. An interaction curve is obtained, which corresponds to the results of series of calculation for the ship hull subject to bending conditions with different angles of curvature. It is found that the interaction curve is asymmetrical because the hull cross section is not symmetrical with respect to the horizontal axis and the structural response of the elements under compression is different from that under tension due to nonlinearity caused by buckling. The angles of the resultant bending moment vector and that of the curvature vector are different in investigated cases. The interaction design equations proposed by other researches are also addressed to discuss the results presented by this study
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