• A practical single refinement method for B

      Dunne, S. E.; Conroy, S.; University of Teesside. School of Computing. (Springer Berlin, 2008-08)
      The authors propose a single refinement method for B, inspired directly by Gardiner and Morgan’s longstanding single complete rule for data refinement, and rendered practical by application of the current first author’s recent first-order characterisation of refinement between monotonic computations
    • Refined Salience Weighting and Error Analysis in Anaphora Resolution.

      Evans, Richard (The Research Group in Computational Linguistics, 2002)
      In this paper, the behaviour of an existing pronominal anaphora resolution system is modified so that different types of pronoun are treated in different ways. Weights are derived using a In genetic algorithm for the outcomes of tests applied by this branching algorithm. Detailed evaluation and error analysis is undertaken. Proposals for future research are put forward.
    • The relationship between the academic reading construct as measured by IELTS and the reading experiences of students in their first year of study at a British university

      Weir, Cyril J.; Hawkey, Roger; Green, Anthony; Devi, Sarojani; Unaldi, Aylin (Canberra : IELTS Australia : British Council, 2009)
      Weir, C. J., Hawkey, R. Green, T., Devi, S., Unaldi, A. (2009) The relationship between the academic reading construct as measured by IELTS and the reading experiences of students in their first year of study at a British university in ELTS Research Report volume 9, British Council/IDP Australia, 97-156.
    • Remediation of oil spills using zeolites

      Fullen, Michael A.; Kelay, Asha; Williams, Craig D. (2011)
      Current research is testing the hypothesis that zeolites can efficiently and cost effectively adsorb oil spills. To date, this aspect of zeolites science has received little attention. A series of five Master of Science (M.Sc.) Projects at the University of Wolverhampton have shown that the zeolite clinoptilolite can effectively adsorb oil. Various sand-clinoptilolite mixes were tested in replicated laboratory analyses in terms of their ability to adsorb engine oil. Adsorption increased with clinoptilolite amount. The relationship between percentage clinoptilolite and oil adsorption was asymptotic. Thus, on a cost-effective basis, a 20% clinoptilolite: 80% sand mix seems the most costeffective mix. However, a particularly exciting finding was that it was possible to burn the oil-sand-zeolite mix and reuse the ignited mix for further oil adsorption. Experiments are ongoing, but to date the ignition and adsorption cycle has been repeated, on a replicated basis, seven times. Still, the ignited mix adsorbs significantly more oil than the sand control. Initial results suggest that the temperature of ignition is critical, as high temperatures can destroy the crystal and micro-pore structure of zeolites. Thus, low temperature ignition (~400oC) seems to allow the retention of structural integrity. Similar results were obtained using the zeolite chabazite and experiments are in progress on phillipsite, which is the third major zeolite mineral. If the hypotheses can be proven, there are potentially immense benefits. Sand-zeolite mixtures could be used to effectively adsorb terrestrial oil spills (i.e. at oil refinery plants, road accidents, beach spills from oil tankers and spills at petrol stations) and thus remediate oil-contaminated soils. The contaminated mix could be ignited and, given the appropriate infrastructure, the energy emission of combustion could be used as a source for electrical power. Then, the ignited mix could be reused in subsequent oil spills. This offers enormous potential for an environmentally-friendly sustainable ‘green’ technology. It would also represent intelligent use of zeolite resources. On a global scale, including Europe, clinoptilolite is the most common and inexpensive zeolite resource.
    • Revitalization of Alleys - creating safe, social and green networks in central Tucson

      Zhao, Kexin (The University of Arizona., 2013)
      Alleys are underutilized corridors that can potentially provide many valuable uses in cities. Alleys can be used for multiple purposes during the day and night: conventional functions, dog walking, water harvesting, art display and as renewable energy showcases, to name a few. In addition, they can become welcoming and popular linear gathering spaces. On a grander scale, they can be used as networks and connections between destinations. This project proposes to evaluate the current challenges and opportunities of alleys in central Tucson, to create multiple design templates for safe, social, and green alleys, and to enhance the connectivity to Tucson Modern Streetcar Areas.
    • Sleep Profiles and Mood States During an Expedition to the South Pole

      Pedlar, Charles R.; Lane, Andrew M.; Lloyd, Juliette C.; Dawson, Jean; Emegbo, Stephen; Whyte, Gregory P.; Stanley, Neil (2013-06-27)
    • Soil conservation using palm-mat geotextiles on loamy sand soils in the United Kingdom

      Bhattacharyya, Ranjan; Davies, Kathleen; Fullen, Michael A.; Booth, Colin A. (University of Wolverhampton in association with International Soil Conservation Organization, 2008)
      Geotextile-mats constructed from Borassus aethiopum (Borassus Palm) and Mauritia flexuosa (Buriti Palm) leaves have the potential to decrease soil erosion. In the U.K., field experiments are being conducted on the effectiveness of palm-mats to reduce soil erosion at Hilton, east Shropshire. Twelve plots (each plot measuring 1.0 x 1.0 m; 6 plots were completely covered with Borassus mats, and the other 6 plots were bare) were established to study the effects of geotextile-mats on splash erosion. Eight runoff plots (10 x 1 m on a 15o slope) were used, with duplicate treatments: (i) bare soil; (ii) grassed, (iii) bare soil with 1 m Borassus-mat buffer zones and (iv) completely covered with Borassus mats. Runoff volume and sediment yield were measured after each substantial storm from 25/03/02-10/05/04 (total precipitation = 1320 mm). Results indicate that palm-mats on bare soil significantly reduced total soil splash erosion by ~50% compared with bare soil (34.2 g m-2; during 10/06/02-09/02/04, total precipitation = 1038 mm). Total runoff from bare plots was 3.58 litres m-2 and total sediment yield was 8.58 g m-2. Borassus mats as buffer strips reduced runoff by ~36% and soil erosion by ~57%. Total soil loss from the completely covered plots was only ~16% less than the buffer zone plots. To confirm the results, another set of runoff experiments are in progress at Hilton, with one additional treatment (bare soil with 1 m Buriti-mat buffer zones) compared with the earlier experiment. Results (08/01/07-24/08/07; total precipitation = 702 mm) indicate that total runoff from bare plots was 21.2 litres m-2 and total sediment yield was 2302 g m-2. Borassus and Buriti mats as 1 m buffer strips reduced runoff by ~86 and 61%, respectively, and soil erosion by ~93 and 98%, respectively. Buffer strips of Borassus mats are as effective as complete cover of the same mats and are more effective in reducing runoff water than the buffer strips of Buriti mats. Combined results from both sets of runoff experiments (total precipitation = 2022 mm) suggest that application of Borassus mats as 1 m protective buffer strips on bare soil reduced runoff by ~77% and soil erosion by ~93%. Thus, Borassus-mat (buffer strips) cover on vulnerable segments of the soilscape is highly effective for soil and water conservation on temperate loamy sand soils.
    • Suitability of MANET Protocols for Heterogeneous Mobile Devices Communication in Gaming and Multimedia

      Salim, Aly; Mehdi, Qasim (University of Wolverhampton, School of Computing and Information Technology, 2013-07-01)
      he improvement and development of MANET protocols has been widely researched in order to bring about new technology with the rapidly developing field. More emphasis has been placed on development of protocols with some improvements focused on one issue in MANETs (ECMANSI, MANSI, ZRP, DVMRP) than working on all round MANET that would significantly tackle most if not all issues with MANET protocols so far (FLIP). However, there has also been more emphasis on development of non demanding applications that are not included multiplayer gaming and real-time multimedia content rich streaming applications. This paper looks at the use of mobile devices in gaming and multimedia rich applications. It proposes a protocol, which is in development that offers better efficiency, reliability, robustness and adaptability of wireless communication.
    • Supporting the Procedural Component of Query Languages over Time-Varying Data

      Gao, Dengfeng (The University of Arizona., 2009)
      As everything in the real world changes over time, the ability to model thistemporal dimension of the real world is essential to many computerapplications. Almost every database application involves the management oftemporal data. This applies not only to relational data but also to any datathat models the real world including XML data. Expressing queries ontime-varying (relational or XML) data by using standard query language (SQLor XQuery) is more difficult than writing queries on nontemporal data.In this dissertation, we present minimal valid-time extensions to XQueryand SQL/PSM, focusing on the procedural aspect of the two query languagesand efficient evaluation of sequenced queries.For XQuery, we add valid time support to it by minimally extendingthe syntax and semantics of XQuery. We adopt a stratum approach which maps a&tauXQuery query to a conventional XQuery. The first part of the dissertationfocuses on how to performthis mapping, in particular, on mapping sequenced queries, which are byfar the most challenging. The critical issue of supporting sequenced queries(in any query language) is time-slicing the input data while retaining periodtimestamping. Timestamps are distributed throughout anXML document, rather than uniformly in tuples, complicating the temporalslicing while also providing opportunities for optimization. We propose fiveoptimizations of our initial maximally-fragmented time-slicing approach:selected node slicing, copy-based per-expression slicing, in-placeper-expression slicing, and idiomatic slicing, each of which reducesthe number of constant periods over which the query is evaluated.We also extend a conventional XML query benchmark to effect a temporal XMLquery benchmark. Experiments on this benchmark show that in-place slicingis the best. We then apply the approaches used in &tauXQuery to temporal SQL/PSM.The stratum architecture and most of the time-slicing techniques work fortemporal SQL/PSM. Empirical comparison is performed by running a variety of temporalqueries.
    • Test for embargo

      Jones, Peter (2015)
    • Theory and Design Considerations of a Saline Ecological Landscape: A constructive method to reduce brine waste volume

      Bresdin, Cylphine (The University of Arizona., 2013)
      Pertinent abiotic and biotic factors and their interdependencies necessary to comprehend the ecology of saline systems are investigated and evaluated. A designed saline ecosystem is proposed as a constructive method to reduce waste volume. Landscape pattern is investigated as the vehicle for an evapotranspiration induced directional saline gradient. A demonstration site is used to explore conceptual design application of the idea of ecosystem pattern consisting of a linear sequence of ecotopes, each displaying its own ecological community in relation to salinity range and site context. Biota is relinquished to self-organization. Potential for research use of the ecosystem is illustrated.