Browsing School of Technology by Issue Date
Now showing items 221-240 of 369
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Pedestrian localisation for indoor environments
(University of CambridgeFaculty of Computer Science and Technology, 2010-11-16)Ubiquitous computing systems aim to assist us as we go about our daily lives, whilst at the same time fading into the background so that we do not notice their presence. To do this they need to be able to sense their ...
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Syngas production from heavy liquid fuel reforming in inert porous media
(University of CambridgeDepartment of Engineering, 2010-11-16)In the effort to introduce fuel cell technology in the field of decentralized and mobile power generators, a hydrocarbon reformer to syngas seems to be the way for the market uptake. In this thesis, a potential technology ...
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Ground movements due to excavation in clay: physical and analytical models
(University of CambridgeDepartment of Engineering, 2010-11-16)In view of the recent catastrophes associated with deep excavations, there is an urgent need to provide vital guidelines on the design of the construction process. To develop a simple tool for predicting ground deformation ...
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Ultra-High Speed Particle Image Velocimetry on Drop-on-Demand Jetting
(Proc 27th Int. Conf. on Digital Printing Technologies NIP27, 2011)An experimental setup to study the dynamics of droplet jetting from a commercially available print-head is described. A MicroFab print-head with an 80 µm diameter transparent nozzle was set to print droplets at a speed ...
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The dynamics of the impact and coalescence of droplets on a solid surface
(Biomicrofluidics, 2011)A simple experimental setup to study the impact and coalescence of deposited droplets is described. Droplet impact and coalescence have been investigated by high-speed particle image velocimetry. Velocity fields near the ...
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Autoregressive clustering for HMM speech synthesis
(ISCA (International Speech Communication Association)Proceedings of the 11th Annual Conference of the International Speech CommunicationProceedings of the 11th Annual Conference of the International Speech Communication, 2011)The autoregressive HMM has been shown to provide efficient parameter estimation and high-quality synthesis, but in previous experiments decision trees derived from a non-autoregressive system were used. In this paper we ...
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Computer code in support of the manuscript "Phase field model for coupled displacive and diffusive microstructural processes under thermal loading"
(2011)Supporting material for the article: Maraldi, M., Wells, G. N., and Molari, L. (2011). Phase field model for coupled displacive and diffusive microstructural processes under thermal loading. Journal of the Mechanics and ...
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Jetting, In-Nozzle Meniscus Motion and Nozzle-Plate Flooding in an Industrial Drop-on-Demand Print Head
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)The state of the ink film at and near the nozzles of a drop-ondemand(DoD) print head during jetting has a direct impact on printing performance and reliability. We have developed highspeed imaging apparatus and analytical ...
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The effect of inkjet ink composition on rheology and jetting behaviour
(Proc 27th Int. Conf. on Digital Printing Technologies, 2011)This work presents recent results on the way linear and non linear viscoelastic properties of the fluids affect the jetting mechanism. Recent progress on quantitative characterising both high frequency linear (LVE) and ...
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Dependence of drop speed on nozzle diameter, viscosity and drive amplitude in drop-on-demand ink-jet printing
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)Results of recent experiments and numerical simulations are presented, which have been used to establish empirical rules for the dependence of drop speed on nozzle diameter and drive amplitude for Newtonian and non-Newtonian ...
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Inkjet printing of non-Newtonian fluids
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)Jet breakup is strongly affected by fluid rheology. In particular,small amounts of polymer can cause substantially different breakup dynamics compared to a Newtonian jet, influencing in-flight fragmentation and detachment ...
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Holographic Measurement of Drop-on-Demand Drops in Flight
(Proc 27th Int. Conf. on Digital Printing Technologies, NIP27, 2011)The analysis of images of ink drops in flight can provide information about jet straightness, drop velocity and volume. However trade-offs between field of view, optical and digital resolution and other factors such as ...
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Computer code in support of paper 'Optimal control with stochastic PDE constraints and uncertain controls'
(2011)Computer code in support of the paper 'Rosseel, E. and Wells, G. N. Optimal control with stochastic PDE constraints and uncertain controls. Comput. Methods Appl. Mech. Engrg., http://dx.doi.org/10.1016/j.cma.2011.11.026.'
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Simulating intertwined design processes that have similar structures: a case study of a small company that creates made-to-order fashion products
(Inderscience, 2011-01)The authors use simulation to analyse the resource-driven dependencies between concurrent processes used to create customised products in a company. Such processes are uncertain and unique according to the design changes ...
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Redesigning the design process through interactive simulation: A case study of life-cycle engineering in jet engine conceptual design
(Inderscience, 2011-01)Many aerospace companies are currently making the transition to providing fully-integrated product-service offerings in which their products are designed from the outset with life-cycle considerations in mind. Based on ...
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Cojumping: Evidence from the US Treasury Bond and Futures Market
(2011-02)The basis between spot and future prices will be affected by jump behavior in each asset price, challenging intraday hedging strategies. Using a formal cojumping test this paper considers the cojumping behaviour of spot ...
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Vibration from underground railways: considering piled foundations and twin tunnels
(University of CambridgeDepartment of Engineering, 2011-02-08)Accurate predictions of ground-borne vibration levels in the vicinity of an underground railway are greatly sought after in modern urban centers. Yet the complexity involved in simulating the underground environment means ...
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Digital Audio Effects
(2011-02-22)
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A comparison and user-based evaluation of models of textual information structure in the context of cancer risk assessment
(2011-03-08)Abstract Background Many practical tasks in biomedicine require accessing specific types of information in scientific literature; e.g. information about the results or conclusions of the study in question. Several schemes ...