2,895 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
Sensationalising Hull: Mary Elizabeth Braddon’s Theatrical and Literary Connections
No full textBest-selling Victorian sensation fiction author Mary Elizabeth Braddon was (in)famous for novels depicting female bigamists, attempted murder, arson and bribery; anything and everything that shocked Victorian sensibilities. Before she gained international fame with Lady Audley’s Secret (1862) and Aurora Floyd (1862) though, she began her writing career in the East Riding, and she continued to use the county as a setting for her fiction for the next fifty years. Braddon also toured the county as a travelling actress in the 1850s, sparking a debate within Hull’s Board of Health while raising money for Pearson Park. Braddon’s connections with Hull and the East Riding illustrate her creative talents, her fiery passion and a notoriety that continued for the rest of her life
Sensationalising Hull: Mary Elizabeth Braddon’s Theatrical and Literary Connections
No full textBest-selling Victorian sensation fiction author Mary Elizabeth Braddon was (in)famous for novels depicting female bigamists, attempted murder, arson and bribery; anything and everything that shocked Victorian sensibilities. Before she gained international fame with Lady Audley’s Secret (1862) and Aurora Floyd (1862) though, she began her writing career in the East Riding, and she continued to use the county as a setting for her fiction for the next fifty years. Braddon also toured the county as a travelling actress in the 1850s, sparking a debate within Hull’s Board of Health while raising money for Pearson Park. Braddon’s connections with Hull and the East Riding illustrate her creative talents, her fiery passion and a notoriety that continued for the rest of her life
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)
Medical informatics The generic interchange of comprehensive health data
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Jeremy Bentham on open government and privacy
No full textThis article sketches the key political dimensions of Jeremy Bentham's utilitarianism, focusing particularly on the central importance that he placed on freedom of information as a necessary condition for the effective monitoring of public officials by civil society groups and individual citizens. Section one introduces Bentham as a pivotal radical thinker of the late eighteenth and early nineteenth centuries. Section two outlines the critical dimensions of Bentham's political theory, particularly the need to debunk metaphorical and obscure language so as to enable citizens to understand the real forces and interests at work in their world. Section three turns to his later constitutional theory, emphasizing its radically democratic elements. Section four focuses on Bentham's theory of open government, emphasizing its reliance on public scrutiny of the actions of office-holders, a function that he assigned to what he called the Public Opinion Tribunal. Section five analyzes the place that he ascribed to personal privacy through a discussion of his liberal attitude to sexual practices. Section six reflects on the cogency and contemporary relevance of Bentham's theory
Jeremy Bentham on open government and privacy
No full textThis article sketches the key political dimensions of Jeremy Bentham's utilitarianism, focusing particularly on the central importance that he placed on freedom of information as a necessary condition for the effective monitoring of public officials by civil society groups and individual citizens. Section one introduces Bentham as a pivotal radical thinker of the late eighteenth and early nineteenth centuries. Section two outlines the critical dimensions of Bentham's political theory, particularly the need to debunk metaphorical and obscure language so as to enable citizens to understand the real forces and interests at work in their world. Section three turns to his later constitutional theory, emphasizing its radically democratic elements. Section four focuses on Bentham's theory of open government, emphasizing its reliance on public scrutiny of the actions of office-holders, a function that he assigned to what he called the Public Opinion Tribunal. Section five analyzes the place that he ascribed to personal privacy through a discussion of his liberal attitude to sexual practices. Section six reflects on the cogency and contemporary relevance of Bentham's theory
Laser-generated ultrasound with applications to non-destructive evaluation
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Adaptive mutation and evolution of the RNA polymerase subunit delta during <i>Streptococcus pneumoniae</i> biofilm development.
No full textStreptococcus pneumoniae typically resides asymptomatically within the respiratory tract, sinuses and nasopharynx of healthy carriers. However, for children, the elderly, or immunocompromised individuals, S. pneumoniae is the cause of considerable morbidity and mortality globally. Many of the pathologies caused by this organism are associated with the surface adhered microbial communities known as biofilms. Biofilms of the S. pneumoniae clinical isolate 22F ST433 have been observed to rapidly exhibit parallel evolution with mutations to the RNA polymerase (RNAP) subunit δ gene rpoE repeatedly occurring. All rpoE mutants displayed a Small Colony Variant (SCV) morphology; this phenotype is associated with carriage and disease states in S. pneumoniae, and therefore improved understanding of biofilm formation may be key to reducing the burden of disease of this pathogen. The rpoE mutations within the SCV population are heterogenous, ranging from single nucleotide polymorphisms to large-scale deletions of the C-terminal domain of RpoE. As a result of these mutation SCVs display significant altered phenotypes relative to the 22F wild-type including metabolic changes, reduced virulence and increased biofilm formation. However, these changes are likely to be due to altered RpoE function rather than a complete loss as we also observed that SCVs were phenotypically distinct from a complete rpoE knock-out. Alteration to, rather than loss of RpoE function within SCVs is supported by our observations that for several important characteristics, including biofilm formation, the magnitude of the phenotypic change correlates to the length of the C-terminal domain of RpoE. Phenotypic differences between the 22F wild-type and SCVs are therefore likely to be due to the C-terminal domain’s roles in RNAP-δ-DNA interactions, the positioning of RNAP within gene promoter regions and open complex formation where C-terminal domain length is likely to be an important factor for RpoE function. Differences observed between SCVs and rpoE KO are likely due to the conserved N-terminal domain of the SCVs, which we predict to have DNA binding and enzymatic activity, and the complete loss of which causes dysregulation. These findings further highlight the diversity that can be generated within even single species biofilms and the mechanisms through which S. pneumoniae RpoE functions
Numerical modelling of plasmas produced by long pulse lasers
No full textSIGLEAvailable from British Library Document Supply Centre- DSC:D69312/86 / BLDSC - British Library Document Supply CentreGBUnited Kingdo
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