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• Journal article
  Vincent CL, Pinson P, Giebel G, 2011,

  Wind fluctuations over the North Sea

  , INTERNATIONAL JOURNAL OF CLIMATOLOGY, Vol: 31, Pages: 1584-1595, ISSN: 0899-8418
  • Cite
• Journal article
  Shorten R, Corless M, Sajja S, Solmaz Set al., 2011,

  On Pade approximations, quadratic stability and discretization of switched linear systems

  , SYSTEMS & CONTROL LETTERS, Vol: 60, Pages: 683-689, ISSN: 0167-6911
  • Cite
  • Citations: 13
• Journal article
  Paolella A, George C, Povia M, Zhang Y, Krahne R, Gich M, Genovese A, Falqui A, Longobardi M, Guardia P, Pellegrino T, Manna Let al., 2011,

  Charge Transport and Electrochemical Properties of Colloidal Greigite (Fe₃S₄) Nanoplatelets

  , CHEMISTRY OF MATERIALS, Vol: 23, Pages: 3762-3768, ISSN: 0897-4756
  • Author Web Link
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  • Citations: 58
• Journal article
  Riedinger A, Leal MP, Deka SR, George C, Franchini IR, Falqui A, Cingolani R, Pellegrino Tet al., 2011,

  "Nanohybrids" Based on pH-Responsive Hydrogels and Inorganic Nanoparticles for Drug Delivery and Sensor Applications

  , NANO LETTERS, Vol: 11, Pages: 3136-3141, ISSN: 1530-6984
  • Author Web Link
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  • Citations: 98
• Journal article
  Van Zalk N, Kerr M, Tilton-Weaver L, 2011,

  Shyness as a moderator of the link between advanced maturity and early adolescent risk behavior

  , SCANDINAVIAN JOURNAL OF PSYCHOLOGY, Vol: 52, Pages: 341-353, ISSN: 0036-5564
  • Author Web Link
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  • Citations: 7
• Journal article
  Korobchevskaya K, George C, Diaspro A, Manna L, Cingolani R, Comin Aet al., 2011,

  Ultrafast carrier dynamics in gold/iron-oxide nanocrystal heterodimers

  , APPLIED PHYSICS LETTERS, Vol: 99, ISSN: 0003-6951
  • Author Web Link
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  • Citations: 20
• Journal article
  Mai L, Yang F, Zhao Y, Xu X, Xu L, Hu B, Luo Y, Liu Het al., 2011,

  Molybdenum oxide nanowires: synthesis & properties

  , MATERIALS TODAY, Vol: 14, Pages: 346-353, ISSN: 1369-7021
  • Author Web Link
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  • Citations: 121
• Journal article
  O'Rourke ST, Calvo RA, McNamara DS, 2011,

  Visualizing Topic Flow in Students' Essays

  , EDUCATIONAL TECHNOLOGY & SOCIETY, Vol: 14, Pages: 4-15, ISSN: 1176-3647
  • Author Web Link
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  • Citations: 9
• Journal article
  Griggs WM, Anderson BDO, Shorten RN, 2011,

  A test for determining systems with "mixed" small gain and passivity properties

  , SYSTEMS & CONTROL LETTERS, Vol: 60, Pages: 479-485, ISSN: 0167-6911
  • Cite
  • Citations: 9
• Journal article
  Reikard G, Pinson P, Bidlot J-R, 2011,

  Forecasting ocean wave energy: The ECMWF wave model and time series methods

  , OCEAN ENGINEERING, Vol: 38, Pages: 1089-1099, ISSN: 0029-8018
  • Cite
• Journal article
  Villalon J, Calvo RA, 2011,

  Concept Maps as Cognitive Visualizations of Writing Assignments

  , EDUCATIONAL TECHNOLOGY & SOCIETY, Vol: 14, Pages: 16-27, ISSN: 1176-3647
  • Author Web Link
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  • Citations: 51
• Journal article
  Mai L-Q, Yang F, Zhao Y-L, Xu X, Xu L, Luo Y-Zet al., 2011,

  Hierarchical MnMoO₄/CoMoO₄ heterostructured nanowires with enhanced supercapacitor performance

  , NATURE COMMUNICATIONS, Vol: 2, ISSN: 2041-1723
  • Author Web Link
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  • Citations: 1014
• Journal article
  Demirel P, Kesidou E, 2011,

  Stimulating different types of eco-innovation in the UK: Government policies and firm motivations

  , ECOLOGICAL ECONOMICS, Vol: 70, Pages: 1546-1557, ISSN: 0921-8009
  • Author Web Link
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  • Citations: 372
• Journal article
  Chang H, Astolfi A, Shim H, 2011,

  A control theoretic approach to malaria immunotherapy with state jumps

  , AUTOMATICA, Vol: 47, Pages: 1271-1277, ISSN: 0005-1098
  • Author Web Link
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  • Citations: 11
• Journal article
  Van Zalk N, Van Zalk M, Kerr M, Stattin Het al., 2011,

  Social Anxiety as a Basis for Friendship Selection and Socialization in Adolescents' Social Networks

  , JOURNAL OF PERSONALITY, Vol: 79, Pages: 499-526, ISSN: 0022-3506
  • Author Web Link
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  • Citations: 61
• Journal article
  Ortega R, Praly L, Astolfi A, Lee J, Nam Ket al., 2011,

  Estimation of Rotor Position and Speed of Permanent Magnet Synchronous Motors With Guaranteed Stability

  , IEEE TRANSACTIONS ON CONTROL SYSTEMS TECHNOLOGY, Vol: 19, Pages: 601-614, ISSN: 1063-6536
  • Author Web Link
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  • Citations: 149
• Journal article
  Laila DS, Lovera M, Astolfi A, 2011,

  A discrete-time observer design for spacecraft attitude determination using an orthogonality-preserving algorithm

  , AUTOMATICA, Vol: 47, Pages: 975-980, ISSN: 0005-1098
  • Author Web Link
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  • Citations: 27
• Conference paper
  Li N, Mohamed MS, Cai J, Lin J, Balint D, Dean TAet al., 2011,

  Experimental and Numerical Studies on the Formability of Materials in Hot Stamping and Cold Die Quenching Processes

  , The 14th International ESAFORM Conference on Material Forming, Publisher: American Institute of Physics, Pages: 1555-1561, ISSN: 0094-243X

  Formability of steel and aluminium alloys in hot stamping and cold die quenching processes is studied in this research. Viscoplastic‐damage constitutive equations are developed and determined from experimental data for the prediction of viscoplastic flow and ductility of the materials. The determined unified constitutive equations are then implemented into the commercial Finite Element code Abaqus/Explicit via a user defined subroutine, VUMAT. An FE process simulation model and numerical procedures are established for the modeling of hot stamping processes for a spherical part with a central hole. Different failure modes (failure takes place either near the central hole or in the mid span of the part) are obtained. To validate the simulation results, a test programme is developed, a test die set has been designed and manufactured, and tests have been carried out for the materials with different forming rates. It has been found that very close agreements between experimental and numerical process simulation results are obtained for the ranges of temperatures and forming rates carried out.

  • Abstract
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• Conference paper
  Porat T, Rief I, Puzis R, Elovici Yet al., 2011,

  LoOkie – It Feels Like Being There, proposing a social mobile application

  , CHI’ 2011 Conference Proceedings
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• Journal article
  Krahne R, Morello G, Figuerola A, George C, Deka S, Manna Let al., 2011,

  Physical properties of elongated inorganic nanoparticles

  , PHYSICS REPORTS-REVIEW SECTION OF PHYSICS LETTERS, Vol: 501, Pages: 75-221, ISSN: 0370-1573
  • Cite
  • Citations: 138
• Journal article
  Calvo RA, O'Rourke ST, Jones J, Yacef K, Reimann Pet al., 2011,

  Collaborative Writing Support Tools on the Cloud

  , IEEE TRANSACTIONS ON LEARNING TECHNOLOGIES, Vol: 4, Pages: 88-97, ISSN: 1939-1382
  • Cite
  • Citations: 84
• Journal article
  Deterding S, 2011,

  Hitting the Straw Man, Missing the Parade

  , CONSTRUCTIVIST FOUNDATIONS, Vol: 6, Pages: 278-281, ISSN: 1782-348X
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• Journal article
  Childs P, McGlashan N, Heyes A, 2011,

  Accessing high thermal efficiency power generation using fluid phase chemical looping

  , Transactions of Nanjing University of Aeronautics and Astronautics, Vol: 28, Pages: 1-11, ISSN: 1005-1120
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• Journal article
  Corless M, Shorten R, 2011,

  On a class of generalized eigenvalue problems and equivalent eigenvalue problems that arise in systems and control theory

  , AUTOMATICA, Vol: 47, Pages: 431-442, ISSN: 0005-1098
  • Cite
  • Citations: 9
• Journal article
  McGlashan NR, Childs PRN, Heyes AL, 2011,

  Chemical looping combustion using the direct combustion of liquid metal in a gas turbine based cycle

  , Journal of Engineering for Gas Turbines and Power, Vol: Vol 133, Pages: 031701-1-031701-13, ISSN: 0742-4795
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• Journal article
  George C, Dorfs D, Bertoni G, Falqui A, Genovese A, Pellegrino T, Roig A, Quarta A, Comparelli R, Curri ML, Cingolani R, Manna Let al., 2011,

  A Cast-Mold Approach to Iron Oxide and Pt/Iron Oxide Nanocontainers and Nanoparticles with a Reactive Concave Surface

  , JOURNAL OF THE AMERICAN CHEMICAL SOCIETY, Vol: 133, Pages: 2205-2217, ISSN: 0002-7863
  • Cite
  • Citations: 72
• Conference paper
  Porat T, Oron-Gilad T, Silbiger J, Rottem-Hovev Met al., 2011,

  Switch and Deliver: display layouts for MOMV (Multiple Operators Multiple Video feeds) environments

  , IEEE CogSIMA 2011 Conference Proceedings
  • Cite
• Journal article
  Casagrande D, Astolfi A, Ortega R, 2011,

  Asymptotic stabilization of passive systems without damping injection: A sampled integral technique

  , AUTOMATICA, Vol: 47, Pages: 262-271, ISSN: 0005-1098
  • Author Web Link
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  • Citations: 20
• Journal article
  Nanayakkara T, Halgamuge MN, Sridhar P, Madni AMet al., 2011,

  Intelligent sensing in dynamic environments using Markov decision process

  , Sensors, Vol: 11, Pages: 1229-1242, ISSN: 1424-8220

  In a network of low-powered wireless sensors, it is essential to capture as many environmental events as possible while still preserving the battery life of the sensor node. This paper focuses on a real-time learning algorithm to extend the lifetime of a sensor node to sense and transmit environmental events. A common method that is generally adopted in ad-hoc sensor networks is to periodically put the sensor nodes to sleep. The purpose of the learning algorithm is to couple the sensor’s sleeping behavior to the natural statistics of the environment hence that it can be in optimal harmony with changes in the environment, the sensors can sleep when steady environment and stay awake when turbulent environment. This paper presents theoretical and experimental validation of a reward based learning algorithm that can be implemented on an embedded sensor. The key contribution of the proposed approach is the design and implementation of a reward function that satisfies a trade-off between the above two mutually contradicting objectives, and a linear critic function to approximate the discounted sum of future rewards in order to perform policy learning.

  • Abstract
  • Publisher Web Link
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• Conference paper
  Childs PRN, McGlashan N, Gosling G, Aurisicchio Met al., 2011,

  Linking design, analysis, manufacture and test in the engineering student experience

  , 12th International Conference on Engineering and Product Design Education, Publisher: The Society Society, Pages: 210-215

  The modern engineer needs to have diverse skills ranging from abilities in re-design, co-design, customisation, management of resources and intellectual property, combined with technical expertise. Design education needs to prepare individuals for these requirements and manage the expectations of the students concerned. A particular challenge is the disconnect between empowered design practice, where the practitioner already has the necessary skills to explore the task, and the novice who is still learning technical and design skills. In order to develop understanding of design processes commonly experienced in industry a combination of projects using fuzzy or constrained briefs are introduced in the first and second years on the MEng in Mechanical Engineering at Imperial College. Constrained briefs defining the limits for the design activity, are sometimes criticised as limiting the creative opportunities for the people involved. Some creative techniques however focus on identifying the constraints and conflicts involved with a view to resolving them. This paper explores a constrained brief project, used for the second year, where students are required to design, manufacture and then test their design for a pump. The project encourages use and exploration of analytical skills, engineering science and form development as well as basic manufacturing skills. Students can use CNC manufacture for their impeller and volute but are required to manually machine the majority of their bearing housing and shaft arrangement. The combination of concept development within constraints, use of analysis and engineering science, development of manufacturing and assembly skills and the student experience derived from testing their designs, are described within this paper.

  • Abstract
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