344,273 research outputs found
Simple drag prediction strategies for an Autonomous Underwater Vehicle’s hull shape
No full textThe 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
Changing dimensions of single European market Implications for the non-member countries : a case study on India' s textile and clothing exports
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:DXN064485 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
Political correspondence relating to Kingston-upon-Hull, 1678-1835
No full textThis 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
Recommendations for changes in UK National Recovery Guidance (NRG) and associated guidance from the perspective of Lancaster University's Hull Flood Studies
No full textThis report was commissioned by the Civil Contingencies Secretariat (CCS) following the publication of Lancaster University‟s Hull Flood Project and Hull Children‟s Flood Project. Its principal purpose is to identify how findings made as a result of the two research projects could be integrated into the Cabinet Office‟s National Recovery Guidance (NRG), as a means to improve affected communities‟ ability to recover from emergency events.
The report, in effect, details a desktop analysis of UK Civil Protection (CP) guidance, from a bottom-up perspective (i.e. using as its critical lens, the lived experiences of members of the public who were tested by the Hull flooding of 2007 and its aftermath)
The lichen flora of Hull, with particular reference to zonal distribution and environmental monitoring
No full textYesThe 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)
Nematic liquid crystals for nano-structured organic photovoltaic
No full textA range of novel liquid crystals and amorphous organic conjugated semiconductors were synthesised by the chemistry branch of the Organophotonics group at Hull University. These compounds are studied electrochemically and optically to investigate the suitability of these materials as good donor/acceptor with suitable pairs energy levels for use in organic photovoltaic devices. Liquid crystal compounds with a fluorene-thiophene structure were identified as potential electron donors in combination with perylene based compounds as electron acceptors. Time-of-flight was used to study the charge transport of organic semiconductors in this thesis. The nature of the functional groups of the molecules was found to have a significant influence on the charge carrier mobility. The incorporation of a reactive end group with spacer affected the charge carrier mobility of electron donors negatively, suggesting that the mobility depends on the intermolecular separation. Based on the need to correlate the charge transport of the donor/acceptor blends with photovoltaic devices, the electron and hole mobility were studied for blends. For all blends the hole mobility is lower than that of the pure electron donor. The electron mobility of the blends is much higher than that of the pure electron acceptor. The thermal activation of charge transport in the liquid crystals is investigated by applying the Gill model. The result shows that charge transport in the liquid crystals is thermally activated and the activation energy is field dependent. The Gaussian disorder model and correlated disorder model were used to analyze the mobility data of four liquid crystals compounds with the same conjugated core and different end groups. We show that the thin film nanoscale morphology and the phase separation of the donors/acceptors blends depend on the chemical structures of donors and acceptors, the casting solvents and the annealing temperature of the film. The functional groups of the perylene bisimide are found to influence the roughness. The surface roughness of the blended thin film is minimum and its phase separation finest when the electron donors component has short terminal aliphatic groups rather than long polymerisable chains. Chlorobenzene shows the best performance as coasting solvent. The annealing temperature is significant in controlling the nanoscale morphology and the phase separation of an intermixed network of the blends. We successfully demonstrate photovoltaic performance using blends of our novel donors and acceptors. The annealing temperature is very important to optimise the solar cell performance by optimisation of the phase separation. The perylene based liquid crystals have disappointing performance as electron acceptors. The donor with the shortest terminal end group gives the best result. The device performance fully correlates with the blend nanoscale morphology of the blends; the blend with the smallest domains gives best power conversion efficiency; the best device has a value of 1.1%.EThOS - Electronic Theses Online ServiceGBUnited Kingdo
Analysis on the hull girder ultimate strength of a bulk carrier using simplified method based on an incremental-iterative approach
No full textThe 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
Bayesian surface estimation from multiple cameras using a prior based on the visual hull and its application to image based rendering
No full textThe problem of visible surface estimation for image-based rendering is tackled using a new approach, which combines visual hull and surface estimation techniques. It is shown that the new method combines the best features of both approaches, being more robust than direct surface element estimation and more flexible than the visual hull. The new method uses an estimate of the visual hull as a prior on the ill-posed problem of surface element estimation. To improve the computational preformance of the algorithm, a multiresolution approach to surface patch estimation is used. The patches thus estimated can then be tracked over time, to provide an accurate model of the surface geometry, which is then used for estimation of the scene from arbitrary viewpoints. After a brief description of the algorithm, results are presented to show the improvement in performance which can be obtained using either technique alone. The paper concludes with a discussion of extensions to the work currently under investigation
Report for Skills for Care - An evaluation of the impact of service user and carer involvement in the University of Hull social work degree courses
No full textThis report is commissioned by Skills for Care from the University of Hull Social Work Department. Its aim is to evaluate the outcomes of the involvement of service users and carers in the training of social work students. Although much importance is now given to the part played by service users and carers in the training of social workers, there is little proven knowledge shared about the actual impact of their work
Words Behind Walls: Prison Staff Writing
No full textThis anthology of writings stemmed from a University of Hull project that offered bespoke creative writing workshops to staff at both HMP Hull and HMP Manchester. The team wanted to support employees in a role that government and academic research recognizes is vital, but that can have a detrimental impact on mental and physical wellbeing, resulting in a high staff turnover
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