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Kularatna N.,University of Waikato | Kularatna N.,Institution of Engineers | Kularatna N.,Institution of Professional Engineers | Mc Dowall J.,University of Waikato | And 4 more authors.
IEEE Sensors Journal | Year: 2010

The details of developing autonomous 3-D motion monitoring systems based on commercial off-the-shelf (COTS) motion sensors for hydraulic environments are discussed. Possible areas of application, are river bed sediment transport monitoring and monitoring the agitation and other physical parameters inside milk vats with a mechanized agitator. Simplified calculations of inertial navigation systems (INSs) such as Euler angle method, MATLAB programs for further processing, power management systems for autonomous operation including the possibility of inductive power transfer (IPT) and use of microelectromechanical systems (MEMS) technology are discussed. Experimental results for proof of concept systems are highlighted. © 2009 IEEE.

Kett I.J.,Institution of Professional Engineers | Ingham J.,University of Auckland | Evans J.,North Shore Materials Testing Laboratory
International Journal of Pavement Engineering | Year: 2010

Allophane is a mineral that consists of alumino-silicate spheres. Soils that contain allophane have been identified as being problematic for the construction of road pavements. When stabilised with lime, allophanic soils gain strength for a limited period of time, but tend to revert to a lower strength over time. The binders that are currently used for the stabilisation of allophanic soil in New Zealand are lime and cement, and while the reverting process is avoided, these binders are not economical. Various potential binders for allophane were identified and put through a testing process that involved several phases, including a field trial and long-term California bearing ratio testing. The long-term testing determined that two binder combinations appear to have the greatest potential for the stabilisation of allophane; these were 'KOBM+cement' and 'fly ash+lime'.

Ujiwara K.,Japan Institute of Electrical Engineers | Ito T.,Institution of Professional Engineers | Takita A.,Industrial and Social Infrastructure Systems Company | Takayama M.,Hitachi Solutions | And 3 more authors.
Hitachi Review | Year: 2010

Hitachi utilizes its strengths that include technology, products, engineering, and development capabilities to reduce the CO2 emissions to the atmosphere. Hitachi intends to expand its social infrastructure business globally by utilizing its comprehensive strengths and by working in collaboration with the customer to deploy total solutions that contribute to customer's business operations. Hitachi conducts surveys and simulations aimed at determining the current situation that cover three points and offers optimum proposals to customers using their equipment based on the results. Hitachi's approach is to implement energy-efficient systems by performing simulations of optimum energy consumption and offering total proposals that include options such as absorption heat pumps that use heat sources such as on-site power generators or compressors cooling water, various types of waste heat recovery equipment, and absorption water chillers.

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