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The East Midlands in 2010
No full textThe East Midlands in 2010 is the updated evidence base that supports the regional economic strategy, A Flourishing Region. It presents a statistical portrait of the region covering demography, housing, economy & productivity, the labour market, deprivation & economic inclusion, transport, infrastructure & development, the environment and the spatial structure of the economy along with a series of sub-regional profiles
Intercropping for conservation biological control of European corn borer Ostrinia nubilalis Hübner (lepidoptera: crambidae) in bell peppers
No full textThe European corn borer, Ostrinia nubilalis Hübner, is the most important insect pest of sweet peppers in New Jersey. Management of this pest has been dependent on insecticides. Numerous predators feed on the eggs and larvae of O. nubilalis and under certain conditions they can contribute high levels of biological control. Maximum control by these predators can be achieved by using selective insecticides and providing nutritional resources when prey is scarce. From 2008 to 2010, we tested the effects of bell peppers intercropped with flowering plants: dill, Anethum graveolens L.; coriander, Coriandrum sativum L.; and buckwheat, Fagopyrum escuelentum Moench on improving O. nubilalis egg predation and reducing its damage to the fruit. By placing O. nubilalis egg masses on sentinel plants, we found that the major predators in New Jersey were the coccinellid Coleomegilla maculata DeGeer, the anthocorid Orius insidiosus Say, and chrysopid larvae, Chrysoperla sp. Egg predation was negatively affected by aphid populations. Aphid populations were reduced and egg predation was enhanced in plots intercropped with flowering plants. Insecticide sprays were used to determine the compatability of a selective material, spinosad, on O. nubilalis suppression in both intercropped and non-intercropped systems. Unsprayed fruit damage was greater in non-intercropped plots with high O. nubilalis densities than intercropped plots, but not in spinosad-treated fruit. Thus spinosad may not be compatible with intercropping systems due to its toxicity to certain predators. In order to test for affects of floral provisioning on biological control, gut contents of O. insidiosus were screened for DNA from the flowers, O. nubilalis, and M. persicae. It was found that the dispersal of this predator from the flowers into the pepper crop was greatest when flowers began to senesce. However, O. nubilalis was not detected in the guts of O. insidiosus during late-June through mid-August sampling periods. Myzus persicae DNA was detcted, indicating that aphids were the primary food during and after peak aphid densities. The proportion of predators feeding on aphids was similar for intercropped and non-intercropped plots, indicating that aphids were a preferred host and that flowers did not distract O. insidiosus from feeding on aphids.M. S.Includes bibliographical referencesby Matthew Wayne Bickerto
Dr. Duane M. Jackson, Morehouse College, July 2011
No full textThis video is a conversation with Dr. Duane M. Jackson. Dr. Jackson talks about his paper, "Recall and the Serial Position Effect: The Role of Primacy and Recency on Accounting Students' Performance." Jackie Daniel, AUC Woodruff Library, is the interviewer
Design, commissioning and performance of a device to vary the turbulence in a recirculating flume
No full textAmbient turbulent flow structures are one of the key drivers that will determine the rate of wake recovery downstream of tidal turbines. For second and third generation arrays or farms such a parameter is critical for the determination of inter-device spacing and the optimisation of energy extraction per unit surface area. At present offshore flow characterisation is dominated by seabed or surface-mounted diverging-beam acoustic Doppler profilers that whilst having a good spatial capture cannot characterise turbulent flow structures to the same accuracy as single point converging laboratory-scale velocimeters. So a paradox presently exists: We can measure the (mean) flow characteristics at real tidal energy sites but lack the ability to accuracy ascertain high-frequency flow characteristic at discrete spatial locations. This is possible at laboratory-scale with convergent-beam devices but as we do not know the real site conditions replication at small-scale can only be approximated. To date there has been few laboratory studies where the ambient flow turbulence has been varied. The standard method is to generate turbulence from a static structure such as a grid. Here we have developed an articulated rig that has the ability to oscillate cylindrical members along two axes in the flow upstream of tidal turbine models. Initial results presented in this paper show the effect upon the ambient flow that the turbulence-generating rig can impose and the effects upon wake dissipation for varying levels of turbulent length and time scales. Also the formation and insistence of turbulent structures shed from the device are reported. As expected increasing ambient turbulence intensity serves to dissipate the turbine wake more rapidly and whilst we cannot directly relate these laboratory flow characteristics to full-scale tidal energy sites at present it is hoped that offshore measurement technology and that of laboratory replication can converge so that device performance prediction can be performed at smaller-scale and at a corresponding lower cost to the technology
"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States" By M. Carey.
No full text"Reflections on the subject of Emigration from Europe with a view to Settlement in the United States: containing bried sketches of the moral and political character of those states.
By M. Carey, member of the American philosophical, and of the American Antiquarian Society, and author of The Olive Branch, Cindiciae Hibernicae, essays on banking, on political economy, and on internal improvement.
To which are now added the English editor's comments on the subject; together with Important Advice to Emigrants, and Cautions Against Impositions Practiced in the Outports
Dispelling the Myths Behind First-author Citation Counts
No full textWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
Dr. Glendon Swarthout
No full textHosted by Roger M. Busfield, MSU Assistant Professor of Speech and Theater, Meet the Author is designed to introduce a general audience to a contemporary author and their work through in-depth interviews. This episode features a conversation between Dr. Glendon Swarthout, prolific author and English professor at MSU, and assistant professors Sam S. Baskett and Theodore B. Strandness
Best practice provenance for a changing climate: a workshop summary
No full textDoug Bickerton, Vicki-Jo Russell, Martin Breed, Ruby Wake, Natasha Davis, Nola Hancock, Linda Broadhurst, Andy Lowe and Mark Elli
Vibration response statistics of fibre composite panels from optical translucence
No full textTypically, there is variability in the properties of fibre-reinforced composites – material content, thickness, stiffness etc. – and this variability is often spatially correlated. Finite element (FE) or numerical models can predict the response of such panels, but the spatially correlated nature of the variability must be represented in the model. However, characterising the variability, and especially the spatial correlation, is problematical. In this study the data is first generated by an automated optical process: light transmissibility measurements are taken of a dry chopped strand mat. The intensity of the consequent image is post-processed to describe the fibre density as a random field using Karhunen-Loeve decomposition. Previous measurements have shown a strong correlation between the density of the mat and the tensile modulus, so the information is then used to infer the statistics of the stiffness matrix in the FE model. Subsequent realisations of the random field are then used, in a Monte Carlo simulation, to predict the statistics of the natural frequencies and frequency responses. The method provides an automated approach to the characterisation of spatial variability and hence the prediction of the statistics of the vibrational response
Simulation of thermal plant optimization and hydraulic aspects of thermal distribution loops for large campuses
No full textFollowing an introduction, the author describes Texas A&M University and its utilities system. After that, the author presents how to construct simulation models for chilled water and heating hot water distribution systems. The simulation model was used in a $2.3 million Ross Street chilled water pipe replacement project at Texas A&M University. A second project conducted at the University of Texas at San Antonio was used as an example to demonstrate how to identify and design an optimal distribution system by using a simulation model. The author found that the minor losses of these closed loop thermal distribution systems are significantly higher than potable water distribution systems. In the second part of the report, the author presents the latest development of software called the Plant Optimization Program, which can simulate cogeneration plant operation, estimate its operation cost and provide optimized operation suggestions. The author also developed detailed simulation models for a gas turbine and heat recovery steam generator and identified significant potential savings. Finally, the author also used a steam turbine as an example to present a multi-regression method on constructing simulation models by using basic statistics and optimization algorithms. This report presents a survey of the author??s working experience at the Energy Systems Laboratory (ESL) at Texas A&M University during the period of January 2002 through March 2004. The purpose of the above work was to allow the author to become familiar with the practice of engineering. The result is that the author knows how to complete a project from start to finish and understands how both technical and nontechnical aspects of a project need to be considered in order to ensure a quality deliverable and bring a project to successful completion. This report concludes that the objectives of the internship were successfully accomplished and that the requirements for the degree of Degree of Engineering have been satisfied
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