51 research outputs found
Roscoe H. Playforth Interview - Part 2
No full textAn interview with Roscoe H. Playforth, former Dean of the School of Social Sciences, with Donald E. Flatt on the history of Morehead State University. Playforth served as Chair of the Division of Social Sciences and Dean of the School of Social Sciences from 1957 to 1976. He was a recipient of the Founders Day Award for University Service in 1991
A treatise on chemistry /
No full textVols. 1-2: New ed. completely rev. by Sir H. E. Roscoe, assisted by Drs. H. G. Colman and A. Harden.I. The non-metallic elements. [3d ed.] 1895.--II. The metals [3d ed.] 1898.--III. The chemistry of the hydrocarbons and their derivatives, or Organic chemistry: pt. I, 1888; pt. II [2d ed.] 1887; pt. III 1887; pt. IV 1888; pt. V, 1889; pt. VI, 1892.Mode of access: Internet
Comparisons of the execution times and memory requirements for high-speed discrete fourier transforms and fast fourier transforms, for the measurement of AC power harmonics
No full textConventional wisdom dictates that a Fast Fourier Transform (FFT) will be a more computationally effective method for measuring multiple harmonics than a Discrete Fourier Transform (DFT) approach. However, in this paper it is shown that carefully coded discrete transforms which distribute their computational load over many frames can be made to produce results in shorter execution times than the FFT approach, even for large number of harmonic measurement frequencies. This is because the execution time of the presented DFT actually rises with N and not the classical N2 value, while the execution time of the FFT rises with Nlog2N
Clarissa [electronic resource] : or the History of a Young Lady. Comprehending the most Important Concerns of private Life. Abridged from the Works of Samuel Richardson, Esq; author of Pamela, and Sir Charles Grandison.
No full textWith two final advertisement leaves.Braces in title.Price from imprint: price One Shilling.Not in Roscoe. MH-H copy: height = 11.5cm., horizontal chain lines, in 6sElectronic reproduction.English Short Title Catalog,Reproduction of original from Harvard University Houghton Library
Behaviour of buried pipelines subjected to external loading.
No full textThe research presented in this Thesis was carried out at the University of Sheffield under
the supervision of Dr I. C. Pyrah and Dr W. F. Anderson, and Mr G. Leach at British Gas
Engineering Research Station (ERS). The research was financially supported by a British
Gas Research Scholarship and by the Overseas Research Students Awards Scheme.
The Author would like to express his sincere gratitude to his supervisors for their invaluable
help, guidance and encouragement during the development of the research.
The Author is also grateful to Dr S. R. Mi for his interest and assistance throughout the
research. Special thanks also go to Dr S. J. Wheeler for his supervision during the first year
of the research and sound advice in the initial stage of the work.
The Author would like to express his gratitude to all members of the geotechnics group at
the University of Sheffield for the useful discussions and comments. Special thanks and
appreciation are extended to the staff at the ERS, particularly Mr E. Middleton for
providing the data of the field tests and constructive comments.
The laboratory tests were performed at ERS Soils Laboratory for which the Author is
thankful to the laboratory staff. The Author must also thank British Gas for providing the
computer hardware and software for performing the numerical analyses, and the printing
facilities to produce the Thesis. Thanks also go to Mr D. Reay and Mr B. Bellwood at the
Gas Research Centre of British Gas for ensuring continuous financial support throughout
the award period.
Finally, the Author wishes to thank his family and friends for their endless support and
encouragement throughout the period of study in the UK. Without them, this Thesis may
never have been completed
Phytochrome-mediated growth inhibition of seminal roots in rice seedlings
No full textIn rice (Oryza sativa) seedlings, continuous white-light irradiation inhibited the growth of seminal roots but promoted the growth of crown roots. Here, we examined the mechanisms of photoinhibition of seminal root growth. Photoinhibition occurred in the absence of nitrogen, but increased with increasing nitrogen concentrations. In the presence of nitrogen, photoinhibition was correlated with coiling of the root tips. The seminal roots were most photosensitive 48-72 h after germination during the 7-d period after germination. White-light irradiation for at least 6 h was required for photoinhibition, and the Bunsen-Roscoe law of reciprocity was not observed. Experiments with phytochrome mutants showed that far-red light was perceived exclusively by phyA, that red light was perceived by both phyA and phyB, and phyC had little or no role in growth inhibition or coiling of the seminal roots. Fluence-response curve analyses also showed that phyA and phyB control very low fluence response and low fluence response, respectively, in the seminal roots. This was essentially the same as the growth inhibition previously observed at the late stage of coleoptile development (80 h after germination). These results also suggest that other blue-light photoreceptors are involved in growth inhibition of the seminal roots. The photoperceptive site for the root growth inhibition appeared to be the roots themselves. All three phytochrome species of rice were detected immunochemically in roots
Teaching Nutrition to Preschool Students using the Temporal Contiguity Principle
No full textabstract: Multimedia learning has become increasingly popular as it proceeds to understand how different senses such as the visual and auditory systems work together to present information. The aim of the present study was to examine the effect of temporal contiguity, a principle of multimedia learning, while displaying images and narration of fruits and vegetables to increase memorization of content. 21 preschool students between the ages of 4 and 5 from Arizona State University’s Child Study Lab were recruited for the purpose of the study. Students received one of two versions of a short video while inside the classroom. The two videos displayed information either at the same time or successively. Children’s knowledge was assessed with a drag and drop categorization game. The findings show there were no significant differences between the two conditions. Future studies should consider a longer training period when developing multimedia learning technology to ensure content is retained.Dissertation/ThesisMasters Thesis Engineering 201
System reliability with correlated components: Accuracy of the Equivalent Planes method
No full textComputing system reliability when system components are correlated presents a challenge because it usually requires solving multi-fold integrals numerically, which is generally infeasible due to the computational cost. In Dutch flood defense reliability modeling, an efficient method for computing the failure probability of a system of correlated components – referred to here as the Equivalent Planes method – was developed and has been applied in national flood risk analysis. The accuracy of the method has never been thoroughly tested, and the method is absent in the literature; this paper addresses both of these shortcomings. The method is described in detail, including an in-depth discussion about the source of error. A suite of system configurations were defined to test the error in the Equivalent Planes method, with a focus on extreme cases to capture the upper bound of the error. The ‘exact’ system reliability was computed analytically for the special case of equi-correlated components, and otherwise using Monte-Carlo directional sampling. We found that errors in the system failure probability estimates were low for a wide range of system configurations, and became more substantial for large systems with highly-correlated components. In the most extreme cases we tested, the error remained within three times the true failure probability. We provided an example of how one can determine if such error is tolerable in their particular application. We also show the computational advantage of using the Equivalent Planes method; large systems with small failure probabilities which take over 17 h for Monte Carlo directional sampling were computed with the Equivalent Planes in less than one second.Hydraulic EngineeringCivil Engineering and Geoscience
Measuring the viscous flow behaviour of molten metals under shear
No full textThis thesis was submitted for the degree of Doctor of Philosophy and awarded by Brunel University.The flow behaviour of liquid metals (Sn, Pb and Sn-Pb eutectic) under different shearing conditions is investigated. Experiments were performed with two designs of concentric cylinder viscometers: rotating the inner cylinder (Searle) and rotating the outer cylinder (Couette). The latter technique is uncommon and the equipment was optimised with standard oils. The flow behaviour for the metals differs in the two systems. The curves of “apparent” viscosity versus shear rate may be divided into two regimes: I. At lower shear rates (<200 s-1): a reduction of “apparent” viscosity with shear was observed with both viscometers. It is suggested that the high density and high surface tension of the metals and eccentricity between the cylinders at low shear rates, leads to instabilities. Results at low shear rates were therefore discarded and further detailed analysis would be required for a fuller understanding of this behaviour. II. At higher shear rates: a steady, shear-independent behaviour of “apparent” viscosity with shear rate is observed in the Couette system (upto 600 s-1) whereas in the Searle system the “apparent” viscosity increases with shear rate (upto 2600 s-1). From hydrodynamic theory about Newtonian fluids, it is suggested that in the Searle type viscometer, the fluid is unstable and Taylor vortices are expected at low shear rates (~80 s-1). This gives rise to an increase in the “apparent” viscosity with shear rate. Whereas, in the Couette type, the flow is more stable, resulting in a steady “apparent” viscosity. This interpretation is consistent with liquid metals behaving as Newtonian fluids, but further research is required to confirm this. The author suggests further experiments, with the prime one being the investigation of the fluid with counter and co-rotation of the cylinders in order to observe more complex flows. The results are expected to have implications in the modelling of flow for liquid metal processes, especially the initiation of Taylor vortices under the unstable flow conditions produced by rotating the inner cylinder
Corporate social responsibility and gambling industry : an exploratory study
No full textCorporate Social Responsibility (CSR) is one important response to the increasing amounts of criticism levelled at corporations. A number of studies have focused on CSR in a range of industries; however, some contentious industries, e.g. the gambling industry, remain unexplored. Mobilizing CSR in a novel setting not only enhances the knowledge of CSR and gambling, but also provides an overview of this industry itself.
This thesis attempts to investigate three questions: to what extent does the gambling industry disclose CSR-related data, how is CSR understood in this industry and why does the gambling industry engage in CSR? This thesis provides a general overview of the international gambling industry and an in-depth investigation of Macao’s gambling industry. The research design of the thesis employs mixed methods: content analysis and semi-structured interviews. The principal research is based on 49 interviews.
This thesis advances three main arguments. First, it will be argued that there are relatively low volumes of Corporate Social Disclosure (CSD) and Responsible Gambling (RG) disclosure in the international gambling industry, which can be viewed as a legitimising strategy. Second, in Macao’s gambling industry, it is argued that organisations in this industry tend to place a greater emphasis on positive social impacts, while obscuring such negative impacts as gambling addiction and health-related issues. Third, this thesis holds that organisations in Macao’s gambling industry engage symbolically, rather than substantively, with CSR and RG in order to manage stakeholders’ perceptions in an attempt to gain different sources of legitimacy and in turn to enhance its economic interests. In conclusion, the gambling industry does not entirely conform to the institutional environment, which poses a challenge to the organisational legitimacy literature. This thesis introduces a necessary caution into the discussions about the extent of CSD, CSR, and RG in this industry more generally
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