The University of Sheffield

Sheffield, South Yorkshire, United Kingdom

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Department of Mechanical Engineering
728
Total Impact Points
267
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Department of Materials Science and Engineering
2,323
Total Impact Points
239
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Publication History View all

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    ABSTRACT: Despite evidence that monitoring domestic electricity usage can reduce consumption, there is currently little information on what factors motivate people to monitor their consumption. The present research used an augmented version of the theory of planned behavior as a framework for understanding householders’ intentions. Participants (N = 346) completed a questionnaire measuring their beliefs about electricity use and monitoring consumption, their environmental behavior, and concern about climate change. Regression revealed that the primary predictors of intentions to monitor consumption were perceived behavioral control, attitudes toward monitoring, past behavior, descriptive, and subjective norms. In addition, we developed a modified home electricity monitor that legged when participants looked at their consumption. A subset of participants (n = 38) were given a monitor for three months. Participants looked at the monitor relatively frequently during the first week but usage rapidly declined. There was, however, some evidence that participants found the monitor beneficial.
    Journal of Environmental Psychology 12/2014;
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    ABSTRACT: Iron electrodes were prepared by hot-pressing iron-polyethylene based formulations on nickel foam stripes. NiFe cells were tested by using commercial nickel electrodes and our iron electrodes. Post-hoc comparisons were used to identify meaningful differences between iron electrode formulations (based upon bismuth, bismuth sulphate, potassium sulphide and iron sulphide as additives). Our results confirm that both bismuth sulphide and iron sulphide favour the process of charge/discharge of a NiFe cell. In addition, we have found that the use of metallic bismuth only marginally influences coulombic efficiency; likewise, the presence of the soluble bisulfide anion is not sufficient to increase coulombic efficiency. Finally, NiFe cells prepared with bismuth sulphide outperformed their iron sulphide counterparts.
    Journal of Power Sources 12/2014;
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    ABSTRACT: We reconsider the closed form solution of the ptychographic phase problem called the Wigner Distribution Deconvolution Method (WDDM), which has remained discarded for twenty years. Ptychographic reconstruction is nowadays always undertaken by iterative algorithms. WDDM gives rise to a 4 dimensional data cube of all the relative phases between points in the diffraction plane. Here we demonstrate a novel method to use all this information, instead of just the small subset used in the original ‘stepping out’ procedure developed in the 1990 s, thus greatly suppressing noise. We further develop a method for designing an improved probe (illumination function) to further decrease noise effects during the deconvolution division. Combining these two with an iterative procedure for the deconvolution, which avoids the usual difficulty of a divide by a small number, we show in model calculations that WDDM competes well with the modern conventional iterative methods like ePIE (the extended Ptychographical Iterative Engine).
    Ultramicroscopy 12/2014;

Information

  • Address
    Western Bank, S10 2TN, Sheffield, South Yorkshire, United Kingdom
  • Head of Institution
    Sir Peter Middleton
  • Website
    http://www.shef.ac.uk/
  • Phone
    0114 222 2000
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Top publications last week by downloads

 
01/2002;
270 Downloads
 
CIE42, Cape Town, South Africa; 07/2012
249 Downloads

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