Professor XZ Wang

Intelligent Measurement, Control and Analytics of Particulate Processes

Sensor and PAT Data Mining (decision tree generation from data, neural networks, wavelets, principal and independent component analysis, 6s statistical quality control, multidimensional visualisation); On-line Process Analytics (Imaging, NIR, z-potential, acoustics, laser diffraction) for On-line Crystal Shape and Size Measurement and Control, and Characterisation of High Concentration Nano Particulate Systems; Multi-scale Modelling (integration of population balance with morphology modelling) for Shape Control; High-Throughput Formulation of Functional Organic and Inorganic   Nano-materials; Quantitative Structure – Activity Relationships (QSAR) for Prediction of Eco-toxicity of Organic Chemicals and Mixtures.

Sensor and PAT Data Mining

The work involves development of:

(i) techniques for effective extraction of key features from sensor signals to enhance measurement capabilities.

(ii) a genetic programming technique for automatic generation of causal models e.g. decision trees that capture the complex relationships between process operating conditions and product quality.

(iv) data mining techniques for historical data analysis for continuous process performance improvement.

(v) data mining and experimental design to support high-throughput formulation of functional organic and inorganic nano-materials.

(vi) an integrated process data mining system integrating various tools including sensor data pre-processing, neural networks, causal networks, statistical and visualization tools.

(EPSRC EP/D038391, GR/L61774)

Measurement and Control of the Shapes of Growing Crystals

On-line video imaging and multi-scale image analysis are investigated to obtain real-time information of crystal growth rates, growth kinetics and population balance which are all characterised based upon individual crystal facets instead of as a spherical shape. The information is used for developing techniques for controlling crystal growth of individual facets. (Shape project, EPSRC/EP/C009541; Vision project, Malvern Instruments).

Multidimensional Population Balance and Crystal Morphology Modelling

Multidimensional population balance models based upon individual crystal facets are developed through the integration with crystal morphology prediction, which are combined with shape measurement to achieve model predictive control for morphology.

(Shape project, EPSRC/EP/C009541)

In-line sensing and quality control of high concentration nanoparticles

Size measurement in high solid concentration for nano-particles poses great challenges because dilution will cause the change of sample conditions. The work aims at developing an integrated solution by combining z-potential, acoustic attenuation spectroscopy, impedance process tomography and data mining.

(ZAPT project, DTI TP2/SC/6/I/10097)

Simultaneous Measurement of Solid and Liquid Phase Properties Using NIR

Our investigation on the information content of NIR spectra has shown that the spectra contain information of both solid and liquid phases including solid and liquid concentration, size, and polymorphs. Signal separation techniques are being investigated for simultaneous prediction of the multiple properties. (NIRIICA PilotPlant project, EPSRC EP/C001788).

QSAR Mixture Eco-toxicity Prediction

Quantitative structure – activity relationships (QSAR) for toxicity prediction of chemicals have been used only for pure compounds. This work aims at developing a new QSAR technique based on molecular descriptors, fuzzy membership function and inductive data mining for prediction of mixture toxicity.

(MixQSAR project, EPSRC Crystal Faraday Green Technology 01306000)

Intelligent Measurement, Control and Analytics of Particulate Processes

Sensor and PAT Data Mining
The research involves the development of:(i) techniques for effective extraction of key features from sensor signals to enhance measurement capabilities.(ii) a genetic programming technique for automatic generation of causal models e.g. decision trees that capture the complex relationships between process operating conditions and product quality.
(iii) data mining techniques for historical data analysis for continuous process performance improvement.
(iv) data mining and experimental design to support highthroughput formulation of functional organic and inorganic nanomaterials.(v) an integrated process data mining system integrating various tools including sensor data pre-processing, neural networks, causal networks, statistical and visualization tools. (EPSRC EP/D0 8 91, GR/L6177;  EPSRC High Throughput Project EP/H008853/1;)
 
Measurement and Control of the Shapes of Growing Crystals
On-line video imaging and multi-scale image analysis are investigated to obtain real-time information of crystal growth rates, growth kinetics and population balance which are all characterised based upon individual crystal facets instead of as a spherical shape. The information is used for developing techniques for controlling crystal growth of individual facets. (EPSRC SHAPE Follow-on project EP/H008012/1; EPSRC StereoVision Project EP/E045707/1; EPSRC SHAPE Project EP/C009541/1); TSB HMV CGM project;  Vision project, Malvern Instruments). 
 
Morphological Population Balance Modelling of Crystal Growth
Multidimensional population balance models based upon individual crystal facets are developed through the integration with crystal morphology prediction, which are combined with shape measurement to achieve model predictive control for morphology. (EPSRC StereoVision Project EP/E045707/1; EPSRC SHAPE Project EP/C009541/1)

Engineering Nanomaterials
Size measurement in high solid concentration for nanoparticles poses great challenges because dilution will cause the change of sample conditions. The research aims to develop an integrated solution by combining z-potential, acoustic attenuation spectroscopy, impedance process tomography and data mining. Research is also being conducted to combine modeling  (population balance and computational fluid dynamics) with on-line sening to develop scale-up and control strategies for a hydrothermal process for nanomaterial synthesis (EPSRC EngineeringNano project /EP/E040624/1; EPSRC High Throughput Project EP/H008853/1; ZAPT project, DTI TP2/SC/6/I/10097)

Simultaneous Measurement of Solid and Liquid Phase Properties Using NIR
Our investigation on the information content of NIR spectra has shown that the spectra contain information of both solid and liquid phases including solid and liquid concentration, size, and polymorphs. Signal separation techniques are being investigated for simultaneous prediction of the multiple properties. (NIRIICA PilotPlant project, EPSRC EP/C001788).

QSAR Mixture Eco-toxicity Prediction
Quantitative structure – activity relationships (QSAR) for toxicity prediction of chemicals have been used only for pure compounds. This work aims at developing a new QSAR technique based on molecular descriptors, fuzzy membership function and inductive data mining for prediction of mixture toxicity. (MixQSAR project, EPSRC Crystal Faraday Green Technology 01 06000; NERC NanoSar Project)

Research Institute Membership

• Institute of Particle Science and Engineering
• Institute of Process Research and Development

Full Papers in Refereed Journals

Chao Y Ma and Xue Z Wang*, (accepted), "Closed-loop control of crystal shape in cooling crystallisation of L-Glutamic acid", Journal of Process Control.

Chao Y Ma and Xue Z Wang*, (in press), "Model identification of crystal facet growth kinetics in morphological population balance modeling of l-glutamic acid crystallization and experimental validation", Chemical Engineering Science, doi:10.1016/j.ces.2011.05.042

Man Chen, Cai Y. Ma, Tariq Mahmud, Jawwad A. Darr and Xue Z. Wang* (in press) “Modelling and simulation of continuous hydrothermal flow synthesis process for nano-materials manufacture”, Journal of Supercritical Fluids. doi:10.1016/j.supflu.2011.07.002

Chao Y Ma and Xue Z Wang* (in press) “Simultaneous characterization of multiple properties of solid and liquid phases in crystallization processes using NIR”, Particuology, doi:10.1016/j.partic.2011.03.010

B Boonkhao, RF Li, XZ. Wang*, RJ Tweedie and K Primrose (2011) "Making use of process tomography data for multivariate statistical process control”, AIChE Journal, 57(9), 2360-2368. DOI: 10.1002/aic.12443

Cai Y. Ma, Christopher J. Tighe, Robert I. Gruar, Tariq Mahmud, Jawwad A. Darr, Xue Z. Wang* (2011) “Numerical modelling of hydrothermal fluid flow and heat transfer in a tubular heat exchanger under near critical conditions”, Journal of Supercritical Fluids, 57(3), 236-246. doi:10.1016/j.supflu.2011.03.007

Catherine McGuinnes, Rodger Duffin, Simon Brown, Nicholas Mills, Ian L Megson, William MacNee, Shonna Johnston, Sen Lin Lu, Lang Tran, Rufia Li, Xue Wang, David Newby, Ken Donaldson (2011) “Surface derivatization state of polystyrene latex nanoparticles determines both their potency and their mechanism of causing human platelet aggregation in vitro”, Toxicological Sciences, 119 (2): 359-368.

XZ Wang*, CY Ma, J Wan (2011) “Pharmaceutical crystal shape control based on online image processing and multi-scale modeling”, International Journal of Modelling, Identification and Control, 12 (1-2): 101-106.

CY Ma, FV Buontempo, XZ Wang* (2011) “Inductive data mining: Automatic generation of decision trees from data for QSAR modelling and process historical data analysis”, International Journal of Modelling, Identification and Control, 12 (1-2):101-106.

Y Yang, T Lin, XL Weng, JA Darr, XZ Wang* (2011) “Data flow modeling, data mining and QSAR in high-throughput discovery of functional nanomaterials”, Computers and Chemical Engineering, 35(4): 671-678.

JJ Liu, CY Ma, YD Hu, XZ Wang*(2010) “Effect of seed loading and cooling rate on crystal size and shape distributions in protein crystallization-A study using morphological population balance simulation”, Computers & Chemical Engineering, 34(12), 1945-1952.

JJ Liu, CY Ma, YD Hu, XZ Wang*(2010) “Modelling protein crystallisation using morphological population balance models”, Trans IChemE Part A - Chemical Engineering Research and Design, 88(4A): 437-446.

T Lin, S Kellici, K Gong, K Thompson, JRG Evans, X Wang, JA Darr (2010) “Rapid automated materials synthesis instrument: Exploring the composition and heat-treatment of nanoprecursors toward low temperature red phosphors”, Journal of Combinatorial Chemistry 12 (3): 383-392.

XZ Wang* , CY Ma (2009) “Morphological Population Balance Model in Principal Component Space”, AIChE Journal, 55(9): 2370-2381

J Wan, XZ Wang*, CY Ma (2009) Particle Shape Manipulation and Optimization in Cooling Crystallization Involving Multiple Crystal Morphological Forms”. AIChE Journal, 55(8), 2049-2061.

Chao Y Ma, XZ Wang*,  (2009) “Inductive data mining based on genetic programming: Automatic generation of decision trees from data for process historical data analysis”, Computers & Chemical Engineering, 33(10): 1602-1616

Xue Z. Wang*, Ben Perstona, Yang Yanga, Tian Linb and Jawwad A. Darrb (2009) “Robust QSAR model development in high-throughput catalyst discovery based on genetic parameter optimization”. Trans IChemE Part A - Chemical Engineering Research and Design, 87A (10): 1420-1429.

Xiaole Weng, Ben Perstonc, Xue Z. Wang, Isaac Abrahams, Tian Lin, Shoufeng Yang, Julian R.G. Evans, David J. Morgan, Albert F. Carley, Michael Bowker, Jonathan C. Knowles, Ihtesham Rehman and Jawwad A. Darr (2009) “Synthesis and characterization of doped nano-sized ceria–zirconia solid solutions”,  Applied Catalysis B: Environmental, 90 (3-4), 405-415.

Xue Z. Wang,∗, Lande Liu, Rui F. Li, Richard J. Tweedie, Ken Primrose, Jason Corbettc, Fraser K. McNeil-Watsonc (2009) “Online characterisation of nanoparticle suspensions using dynamic light scattering, ultrasound spectroscopy and process tomography”. Trans IChemE Part A - Chemical Engineering Research and Design, 87, 874–884

Li, R.F., Wang, X.Z.*, Abebe, S.B. (2008) Monitoring Batch Cooling Crystallization Using NIR: Development of    Calibration Models Using Genetic Algorithm and PLS. Particle & Particle Systems Characterization, 25(4), 314-327.

Wang, XZ*, Christofides, P.D. (2008) “Control of Particulate Processes”, Particle & Particle Systems Characterization,, 25(4), 291-291

Ma, C.Y ,Wang, X.Z.* (2008) Crystal growth rate dispersion modeling using morphological population balance. AIChE Journal, 54(9), 2321-2334.

Wan, J., Ma, C.Y. and Wang, X.Z*. (2008) A method for analyzing on-line video images of crystallization at high-solid concentrations. Particuology, 6(1), 9-15.

Ma, C.Y., Wang, X.Z.*, and Roberts, K.J. (2008) Morphological population balance for modelling crystal growth in face directions. AIChE Journal, 54(1), 209-222.

Wang, X.Z.*, Roberts, K.J. and Ma, C.Y. (2008) Crystal growth measurement using 2D and 3D imaging and the perspectives for shape control. Chemical Engineering Science, 63(5), 1173-1184

Christofides, P.D. and Wang X.Z. (2008) Editorial - Special Issue on 'Control of Particulate Processes', Chemical Engineering Science, 63(5), 1151.

Abebe, S.B., Wang, X.Z.*, Li, R., Roberts, K.J. and Lai X. (2008) The information content in NIR spectral data for slurries of organic crystals. Powder Technology,179(3), 176-183.

Ma, C.Y., Wang, X.Z.* (2007) Multi-dimensional population balance modeling of the growth of rod-like L-glutamic acid crystals using growth rates estimated from in-process imaging. Advanced Powder Technology, 18(6), 707-723.

Wang, X.Z., Calderon De Anda, J. and Roberts, K. J. (2007) Real-time measurement of the growth rates of individual crystal facets using imaging and image analysis: a feasibility study on needle-shaped crystals of L-glutamic acid. Trans of IChemE Part A: Chemical Engineering Research and Design, 85, (A7), pp.921-927.
Received ‘Most Cited Author 2006-2009 Award’

Al-Bazzaz H.; Wang, X.Z. (2007) Introduction of Dynamics to an Approach for Batch Process Monitoring using Independent Component Analysis. Chemical Engineering Communications, 194(2), pp.218 – 233

Shinto H, Wang XZ, Dagastine RR, Sharma P. (2007) Preface to the special issue. Advanced Powder Technology 18 (6): 603-604.

XZ Wang, FV Buontempo, A Young, D Osborn, (2006), Induction of decision trees using genetic programming for modelling ecotocity data: adaptive discretization of real-valued endpoints. SAR and QSAR in Environmental Research, 17(5), pp.451-471.

SJ Antony, CH Zhou, XZ Wang, (2006) An integrated mechanistic neural network modelling for granular systems. Applied Mathematical Modelling, 30, pp.116-128.

S Dharmayat, JA Calderon de Anda, RB Hammond, X Lai, KJ Roberts,  XZ Wang, (2006) Polymorphic Transformation of L-glutamic Acid Monitored using Combined On-line Video Microscopy and X-ray Diffraction”. Journal of Crystal Growth, 294(1), pp.35-40.

RF Li, GB Thomson, G White, XZ Wang*, J Calderon De Anda, KJ Roberts, (2006), “Integration of crystal morphology modeling and on-line shape measurement”, AIChE Journal, 52 (6): 2297-2305.

M Mwense (PhD student), XZ Wang*, FV Buontempo (PhD student), N Horan, A Young, D Osborn, (2006), “QSAR approach for mixture toxicity prediction using independent latent descriptors and fuzzy membership functions”, SAR and QSAR In Environmental Research, 17(1), 53-73.

H Albazzaz (PhD student), XZ Wang*, (2006) “Historical data analysis based on plots of independent and parallel coordinates and statistical control limits”, Journal of Process Control, 16(2), 103-114.

XZ Wang*, J Calderon De Anda (PhD student), KJ Roberts, RF Li, GB Thomson, G White, (2005) "Advances in on-line monitoring and control of the morphological and polymorphic forms of organic crystals grown from solution", KONA: Powders and Particle, No 23, 69-85. Paper downloadable from http://www.kona.or.jp/html/about/index2005.html

JA Calderon De Anda (PhD student), XZ Wang*, KJ Roberts, (2005) “Multi-scale segmentation image analysis for the in-process monitoring of particle shape with batch crystallisers”, Chemical Engineering Science, 60(4), 1053-1065.
One of Most downloaded 25 papers for six months after publication

JA Calderon De Anda (PhD student), XZ Wang*, X Lai, KJ Roberts,  KH Jennings (GlaxoSmithKline-GSK), MJ Wilkinson (GSK), D Watson (Malvern Instruments Ltd - MIL), D Roberts (MIL), (2005) “Real-time product morphology monitoring in crystallisation using on-line imaging”, AIChE Journal, 51(5), 1406-1065.

FV Buontempo (PhD student), XZ Wang*, Mwense MC(PhD student), NJ Horan, A Young, D Osborn, (2005) “Genetic programming for the induction of decision trees to model ecotoxicity data”, Journal of Chemical Information and Modeling, 45(4), 904-912.

J Chen (PDRA), XZ Wang*, (2005) “A wavelet method for analysis of droplet and particle images for monitoring heterogeneous processes”, Chemical Engineering Communications, 192(4), 499-515.

JA Calderon De Anda (PhD student), XZ Wang*, X Lai, KJ Roberts, (2005) “Classifying organic crystals via in-process image analysis and the use polymorphic and morphological changes based on analysis of on-line images”, Journal of Process Control, 15(7), 785-797
One of Most downloaded 25 papers for three months after publication

H Albazzaz (PhD student), XZ Wang*, F Marhoon (MSc student), (2005)
“Multidimensional visualization for process historical data analysis: a comparative study with multivariate statistical process control”, Journal of Process Control, 15(3), 285-294.
One of Most downloaded 25 papers for three months after publication

XZ Wang*, H Albazzaz (PhD student), F Marhoon (MSc student), (2004) “Multidimensional visualisation of principal component scores for process historical data analysis”, Industrial & Engineering Chemistry Research, 43(22), 7036-7048.

H Albazzaz (PhD student), XZ Wang*, (2004) “Statistical process control charts for batch operations based on independent component analysis”, Industrial & Engineering Chemistry Research, 43(21), 6731-6741.

MC Mwense (PhD student), XZ Wang*, FV Buontempo (PhD student), NJ Horan (School of Civil Eng), A Young (AstraZeneca), D Osborn (Centre of Ecology and Hydrology), (2004) “Prediction of non-interactive mixture toxicity of organic compounds based on a fuzzy set method”, Journal of Chemical Information and Computer Sciences, 44(5), 1763-1773.

R Garcia-Flores (PhD student), XZ Wang*, TF Burgess, (2003) “Tuning inventory policy parameters in a small chemical company", Journal of the Operational Research Society, 34, 350-361.

RF Li (PhD student), XZ Wang*, (2002) "Dimension reduction of process dynamic trends using independent component analysis", Computers & Chemical Engineering, 26, 467-473.

YM Sebzali (PhD student), XZ Wang*, (2002), "Joint analysis of process and operator performance in chemical process operational safety", Journal of Loss Prevention in the Process Industries, 15, 555-564.

R Garcia-Flores (PhD student), XZ Wang* (2002) "A multi-agent system for chemical supply chain simulation and management support",  OR Spectrum, 24(3), 343-370.

XZ Wang*, M Wang, RA Williams, (2002), “Process operational condition monitoring”, The Chemical Engineer, 728(2) 36-38.

RF Li (PhD student), XZ Wang*, (2001) "Qualitative/quantitative simulation of process temporal behaviour using fuzzy clustered digraphs", AIChE Journal, 47 (4), 906-919.

B Yuan (PhD student), XZ Wang*, (2001) "Multilevel PCA and inductive learning for knowledge extraction from operational data of batch processes", Chemical Engineering Communications, 185, 201-221.

J Chen (PDRA), XZ Wang*, (2001) "A new approach to near infrared spectral data analysis using independent component analysis". Journal of Chemical Information and Computer Sciences, 41, 992-1001.

RG Gosden, K Sahakaro, AF Jonson, J Chen (PDRA), RF Li (PhD student), XZ Wang*, ZG Meszena, (2001), "Living polymerisation reactors: molecular weight distribution control using inverse neural network models", Polymer Reaction Engineering, 9(4), 249-270.

YM Sebzalli (PhD student), XZ Wang*, (2001) "Knowledge discovery from process operational data using PCA and fuzzy clustering", Engineering Applications of Artificial Intelligence, 14, 607-616.

FZ Chen (PDRA), XZ Wang*, (2000) "Discovery of operational spaces from process data for production of multiple grades of products", Industrial & Engineering Chemistry Research, 39(7), 2378-2383.

R Garcia-Flores (PhD student), XZ Wang*, GE Goltz, (2000), "Agent-based information flow for process industries' supply chain modelling", Computers & Chemical Engineering, 24, 1135-1142.

YM Sebzalli (PhD student), RF Li (PhD student), FZ Chen (PDRA), XZ Wang*, (2000) "Knowledge discovery from process operational data for assessment and monitoring of operator performance", Computers & Chemical Engineering, 24, 409-414.

B Yuan (PhD student), XZ Wang*, T Morris (AH Marks & Company Ltd), (2000) "Software analyser design using data mining technology for toxicity prediction of aqueous effluents", Waste Management, 20(8), 677-686.

SH Yang (Visiting PDRA), BH Chen (PhD student), XZ Wang, (2000) "Neural network based fault diagnosis using unmeasurable inputs", Engineering Applications of Artificial Intelligence, 13 (3), 345-356.

FZ Chen (PDRA), XZ Wang*, (2000), "Computer-aided causal knowledge discovery from text documents of process and equipment malfunctions", Transactions of IChemE (Part B) - Process Safety and Environmental Protection, 78(B), 60-67.

XZ Wang*, RF Li (PhD student), (1999), "Combining conceptual clustering and principal component analysis for state space based process monitoring", Industrial &. Engineering Chemistry Research, 38, 4345-4358.

XZ Wang*, BH Chen (PhD student), SH Yang (visiting PDRA), C McGreavy, (1999), "Application of wavelets and neural networks to diagnostic system development, part 2", Computers & Chemical Engineering, 23, 945-954.

BH Chen (PhD student), XZ Wang*, SH Yang (Visiting PDRA), C McGreavy, (1999), "Application of wavelets and neural networks to diagnostic system development, part 1", Computers & Chemical Engineering, 23, 899-906.

YC Huang (PDRA), XZ Wang*, (1999) "Application of causal fuzzy networks to wastewater treatment plants", Chemical Engineering Science, 54, 2731-2738.

FZ Chen (PDRA), XZ Wang*, (1999) "An integrated data mining system and its application to process operational data analysis", Computers and Chemical Engineering,23, s777-s780.

D. Sampson (MSc student), XZ Wang*, (1999) "Application of Bayesian networks to troubleshooting distillation columns", Computers and Chemical Engineering, 23, s605-s608.

FZ Chen (PDRA), XZ Wang*, (1998) "Software sensor design using Bayesian automatic classification and backpropagation neural networks", Industrial & Engineering Chemistry Research, 37, 3985-3991.

XZ Wang*, C McGreavy, (1998) "Automatic classification for mining process operational data", Industrial & Engineering Chemistry Research, 37, 2215-2222.

XZ Wang*, BH Chen (PhD student) (1998), "Clustering of infrared spectra of lubricating base oils using adaptive resonance theory", Journal of Chemical Information and Computer Sciences, 38, 457-462.

SH Yang (Visiting PDRA), XZWang, C McGreavy, QH Chen, (1998) “Soft sensor based predictive control of industrial fluid catalytic cracking processes", Transactions of IChemE (Part A) – Chemical Engineering Research & Design, 76(A), 499-508.

BH Chen (PhD student), XZ Wang, C McGreavy, (1998) "On-line operational support system for faults diagnosis in process plants", Computers& Chemical Engineering, 22, s973-s976.

SH Yang, PWH Chung, XZ Wang, C McGreavy, (1998) "Multi-objective constraint control for FCC reactor-regenerator system", Computers & Chemical Engineering, 22, s831-s834.

XZ Wang*, BH Chen (PhD student), C McGreavy, (1997) "Data mining for failure diagnosis of process units by learning probabilistic networks", Transactions of IChemE (Part B) – Process Safety and Environmental Protection, 75(B), 210-216.

XZ Wang*, ML Lu , C McGreavy, (1997) "Learning dynamic fault models based on a fuzzy set covering method", Computers & Chemical Engineering, 21, 621-630.

XZ Wang*, BH Chen (PhD student), SH Yang , C McGreavy, (1997) "Fuzzy rule generation from data for process operational decision support", Computers & Chemical Engineering, 21, s661-s666.

XZ Wang*, BH Chen (PhD student), SH Yang (Visiting PDRA), C McGreavy, (1996) "Neural nets, fuzzy sets and digraphs in safety and operability studies of refinery reaction processes",  Chemical Engineering Science, 51, 2169-2178.

SH Yang (Visiting PDRA), XZ Wang, C McGreavy,  (1996) "Multivariable co-ordinated control system based on predictive control strategy for FCC reactor- regenerator system", Chemical Engineering Science, 51, 2977-2982.

XZ Wang*, SA Yang (Visiting RA), SH Yang (Visiting PDRA), C McGreavy, (1996) "Fuzzy qualitative simulation in safety and operability studies of process plants", Computers & Chemical Engineering, 20, s671-s676.

C McGreavy, XZ Wang, ML Lu, M Zhang , SH Yang, (1996) "Objects, agents and workflow modelling in concurrent process design" , Computers & Chemical Engineering, 20, s1167-s1172.

SH Yang (Visiting PDRA), XZ Wang, C McGreavy, XX Sen, FZ Mao,  (1996) "Application of compensation control in FCC main fractionator" , Development in Chemical and Mineral Processing, 4(1/2), 61-69.

C McGreavy, XZ Wang, ML Lu, Y Naka, (1995) "A concurrent engineering environment for chemical manufacturing", Concurrent Engineering: Research and Applications, 3(4), 281-293.

XZ Wang*, SA Yang (Visiting RA), E Veloso, ML Lu, C McGreavy., (1995) "Qualitative process modelling - a fuzzy signed directed graph method", Computers & Chemical Engineering, 19, s735-s740.

C McGreavy, ML Lu, XZ Wang, EKT Kam, (1994) "Characterisation of the behaviour and product distribution in fluid catalytic cracking using neural networks", Chemical Engineering Science, 49, 4717-4724.

XZ Wang, (1993) "A DCS simulator for the crude oil distillation unit", Journal of System Simulation, 12, 234-239.

XZ Wang, (1993) "Modelling and simulation of refinery crude atmospheric and vacuum distillation unit"
Acta Simulata Systematica Sinica, 5(1), 53-57.

XZ Wang, YF Xu, ZZ Shi, F Shen, (1992) "An object-oriented expert system for trouble-shooting refinery distillation columns", Journal of Chemical Industry and Engineering, 7(2), 197-207.

XZ Wang, YF Xu, ZZ Shi, F Shen,  (1991) "A Prolog-based object-oriented external database system for refinery distillation engineering", Acta Petrolei Sinica (Petroleum Processing Section), 7(4), 84-91.

XZ Wang, YF Xu, XM Xu, RX Jiang, F Shen, (1991) "Diagnostic procedure of refinery trayed distillation columns" , Petroleum Processing, (5)39-44.

XZ Wang, LS Zhang, XM Xu, F Shen., (1990) "MIRT-1: a multifunctional integrated software package for refinery trayed columns", Acta Petrolei Sinica (Petroleum Processing Section), 5(1), 91-96.

XZ Wang, YF Xu, XM Xu, RX Jiang, F Shen, (1990) "Diagnostic procedure of refinery distillation columns", Petroleum Processing, (12), 32-37.

XZ Wang, YF Xu, XM Xu, RX Jiang, F Shen, (1990) "An expert system for selection and design of refinery distillation trays", Petroleum Processing, (7), 6-17.

XZ Wang, LS Zhang, XM Xu, F Shen, (1989) "A generalised correlation for weeping rates of valve trays" Journal of Chemical Industry and Engineering , (1), 123-127.

LS Zhang, YS Liu, XZ Wang, F Shen, (1988) "A new correlation for pressure drop of V-4 valve trays", Petroleum Refinery Engineering, (3), 36-39.

XZ Wang, LS Zhang, XM Xu, F Shen, (1988) "Computer aided diagnosis and revamping of atmospheric and vacuum distillation columns, (I)  the integrated software system" , Petroleum Processing, (4), 1-9.

XZ Wang, LS Zhang, XM Xu, F Shen, (1988) "Computer aided diagnosis and revamping of atmospheric and vacuum distillation columns, (II) industrial applications" , Petroleum Processing , (6), 47-53.

Research Monograph

 XZ Wang
 Data Mining and Knowledge Discovery for Process Monitoring and Control, 251 pages
 Springer, London, 1999
ISBN: 1-85233-137-2

  
Conference Papers and Presentations

Cai Y Ma, Jian Wan and Xue Z Wang*, (2011), Faceted Crystal Growth  Estimation of Potash Alumina in a Hot-stage Reactor Using online Imaging Technique,  UK-China Particle Technology forum III, 3-6 July 2011, Birmingham.

Chao Y. Ma and  Xue Z. Wang*, (2011) Closed-loop control of crystal shape distribution, UK-China Particle Technology forum III, 3-6 July 2011, Birmingham.

Man Chen, Xue Z. Wang*, Tariq Mahmud, Cai Y. Ma, (2011), Modelling and Simulation of Continuous Hydrothermal Flow Synthesis Process for nano-materials Manufacture, UK-China Particle Technology forum III, 3-6 July 2011, Birmingham.

Bundit Boonkhao and Xue Z. Wang* (2011) Using Multivariate Statistical Process control for Monitoring Size via Ultrasonic Attenuation Spectra, UK-China Particle Technology forum III, 3-6 July 2011, Birmingham.

Jing J. Liu, Cai Y. Ma, Yang D. Hu and Xue Z. Wang* (2009) “Morphological Population Balance Models for the Dynamic Evolution of Particle Shape and Size Distribution in Protein Crystallization”. Proceedings of 10th International Symposium on Process Systems Engineering - PSE2009, Aug 16-20, 2009, Salvador, Bahia, Brazil, Rita Maria de Brito Alves, Claudio Augusto Oller do Nascimento and Evaristo Chalbaud Biscaia Jr. (Editors),. pp. 1911-1916.
Best Poster Award

Rui F. Li, Lande Liu, Xue Z. Wang*, Richard Tweedie, Ken Primrose, Jason Corbett, Fraser McNeil-Watson (2009) “Multivariate Statistical Control of Emulsion and Nanoparticle Slurry Processes Based on Process Tomography, Dynamic Light Scattering, and Acoustic Sensor Data”, Proceedings of 10th International Symposium on Process Systems Engineering - PSE2009, Aug 16-20, 2009, Salvador, Bahia, Brazil, Rita Maria de Brito Alves, Claudio Augusto Oller do Nascimento and Evaristo Chalbaud Biscaia Jr. (Editors), Vol. pp. (available in Aug 09).

CY Ma, Wang XZ* (2009) “Development of a Morphological Population Balance Model in Principal Component Space”. Proceedings of 10th International Symposium on Process Systems Engineering - PSE2009, Aug 16-20, 2009, Salvador, Bahia, Brazil, Rita Maria de Brito Alves, Claudio Augusto Oller do Nascimento and Evaristo Chalbaud Biscaia Jr. (Editors), Vol. pp. (available in Aug 09). pp.723-728.

Y Yang, Wang XZ*(2009) “Information flow modeling and data mining in high-throughput discovery of functional nanomaterials”. Jezowski J, Thullie J. eds. 19th ESCAPE, Kracow, Poland; 14-17 June,  2009 - Computer-Aided Chemical Engineering, Vol. 26, 135-140.
Best Poster Award

Chao Y Ma, Wang XZ* (2009) “Measurement of Multiple Properties of Solid and Liquid Phases in Crystallisation Processes Using NIR: Calibration Model Development Using Genetic Algorithm and Support Vector Machine”. Jezowski J, Thullie J. eds. 19th ESCAPE, Kracow, Poland; 14-17 June, 2009 - Computer-Aided Chemical Engineering, Vol. 26, 1393-1398.

Wang XZ∗, Lande Liu, Rui F. Li, Richard J. Tweedie, Ken Primrose, Jason Corbettc, Fraser K. McNeil-Watsonc (2009) “Online characterisation of nanoparticle suspensions using dynamic light scattering, ultrasound spectroscopy and process tomography”. Jezowski J, Thullie J. eds. 19th ESCAPE,  Kracow, Poland; 14-17 June, 2009 - Computer-Aided Chemical Engineering, Vol. 26, 351-356.

Wan J, Wang XZ*, Ma CY.  (2009) “Model-based optimisation and closed-loop control of crystal shape in cooling crystallisation.” Jezowski J, Thullie J. eds. 19th ESCAPE, Kracow, Poland; 14-17 June,  2009 - Computer-Aided Chemical Engineering, Vol. 26, 483-488.

Wang XZ, (2009), Control of Particle Shape and Size Distributions: Integrating Measurement, Data Mining and Multi-scale Modelling, The 8th International Conference on Measurement and Control of Granular Materials (MCGM2009), August 27-29, 2009, Shenyang, China.
Plenary Presentation

Wang XZ, (2009): Particle Shape and Size Control: Integrating Measurement, Data Mining and Modelling. What Where When Multidimensional Advances for Industrial Process Monitoring, 23-24 June 2009, Leeds, UK.
Keynote presentation

Xue Z. Wang, Rui F. Li, Lande Liu, Richard Tweedie, Ken Primrose, Jason Corbett, Fraser McNeil-Watson (2009), Multivariate SPC of Emulsion and Nanoparticle Slurry Processes Based on Process Tomography, Dynamic Light Scattering and Acoustic Spectroscopic Data. Proceedings of The 8th International Conference on Measurement and Control of Granular Materials (MCGM2009), August 27-29, 2009, Shenyang, China. Pp. 77-80
Plenary Presentation

Chao Y Ma, Xue Z Wang (2009) “Measurement of multiple properties of solid and liquid phases in crystallisation using NIR: calibration model development using genetic algorithm and support vector machine”. What Where When Multidimensional Advances for Industrial Process Monitoring, 23-24 June 2009, Leeds, UK.

Xue Z. Wang, (2009) Multivariate Statistical Control of Emulsion and Nanoparticle Slurry Processes Based on Process Tomography, Dynamic Light Scattering, and Acoustic Sensor Data. Annual Conference of Multi-phase Flows, China Engineering Thermo-physics Association. Jilin, 29 August – 31 August 2009.
Plenary Presentation

Jing J. Liu, Cai Y. Ma, Yang D. Hu and Xue Z. Wang* (2009) “Morphological Population Balance Models for the Dynamic Evolution of Particle Shape and Size Distribution in Protein Crystallization”. What Where When Multidimensional Advances for Industrial Process Monitoring, 23-24 June 2009, Leeds, UK.

Rui F. Li, Lande Liu, Xue Z. Wang*, Richard Tweedie, Ken Primrose, Jason Corbett, Fraser McNeil-Watson (2009) “Multivariate Statistical Control of Emulsion and Nanoparticle Slurry Processes Based on Process Tomography, Dynamic Light Scattering, and Acoustic Sensor Data”. What Where When Multidimensional Advances for Industrial Process Monitoring, 23-24 June 2009, Leeds, UK.

Wang XZ, Invited Seminar (2009): Crystal Morphology: Measurement, Modelling and Closed-loop Control. University of Newcastle, 1 May 2009.

Chao Y Ma, FV Buontempo and XZ Wang* (2008) “Inductive Data Mining: Automatic Generation of Decision Trees from Data for QSAR Modelling and Process Historical Data Analysis”. Bertrand Braunschweig and Xavier Joulia eds. 18th European Symposium on Computer Aided Process Engineering – ESCAPE 18, Lyon, France, 1-4 June, 2008, Computer-Aided Chemical Engineering, Vol 25, 581-586.

CY Ma, XZ Wang* and KJ Roberts (2008) “Morphological Population Balance for Modelling Shape Evolution of Crystals Grown From Solution”, Bertrand Braunschweig and Xavier Joulia eds. 18th European Symposium on Computer Aided Process Engineering – ESCAPE 18, Lyon, France, 1-4 June,  2008. Computer-Aided Chemical Engineering, Vol 25, pp. ??-??.

Wang XZ*, CY Ma and KJ Roberts (2008) “Shape – The Final Frontier”. Bertrand Braunschweig and Xavier Joulia eds. 18th European Symposium on Computer Aided Process Engineering – ESCAPE 18, Lyon, France, 1-4 June,  2008. Computer-Aided Chemical Engineering, Vol 25, 817-822.

Wang XZ (2008) Invited Seminar: Crystal Morphology: Measurement, Modelling and Closed-loop Control. Industrial Club on Pharmaceutical Crystallisation, 4 Nov 2008, AstraZeneca, Charnwood, Loughborough.

Wang XZ (2008) Invited Seminar: Data mining and PAT for Pharamceticla Application, July 2008, GlaxoSmithKline, Stevenage.

Ma CY, Wang XZ*, Roberts KJ (2007) “Morphological population balance for modelling shape evolution of crystal grown from solution, Proceedings of The third Asian Particle Technology Symposium – APT2007, 3-5 September Beijing, China. Ed. Wei F and Li J, Vol 1, pp.356-365.

Wang XZ*, Ma CY, Roberts KJ (2007) “Shape – the Final Frontier“,Proceedings of The third Asian Particle Technology Symposium – APT2007, 3-5 September Beijing, China. Ed. Wei F and Li J, Vol 1, pp.448-456.

Wang XZ, (2007) Process Analytical Technology and Data Mining: The Path to Particulate Product Manufacturing Excellence. The third Asian Particle Technology Symposium – APT2007, 3-5 September Beijing, China.
Keynote presentation

H Albazzaz (PhD student), XZ Wang*, (2006) “Multivariate statistical batch process monitoring using dynamic independent component analysis”, Computer Aided Chemical Engineering, 21B: Proceedings of Joint PSE’2006 & ESCAPE16 (9th International Symposium on Process Systems Engineering and 16th European Symposium on Computer Aided Process Engineering), Eds: Wolfgang Marquardt and Costas Pantelides. 9-13 July 2006, Garmisch-Partenkirchen, Germany. Elsevier. pp. 1341-1346.

XZ Wang, KJ Roberts, J Calderon De Anda (PDRA), (2006) “Advances and future directions in morphology monitoring and control of organic crystals grown from solution”, Computer Aided Chemical Engineering, 21B: Proceedings of Joint PSE’2006 & ESCAPE16 (9th International Symposium on Process Systems Engineering and 16th European Symposium on Computer Aided Process Engineering). Eds: Wolfgang Marquardt and Costas Pantelides. 9-13 July 2006, Garmisch-Partenkirchen, Germany. Elsevier. pp.1611-1616.

XZ Wang, (2006), “Data mining and causal model development from sensor and PAT data for optimal manufacture of particulate products’, 6th Seminar of JSPS Advanced Particle Handling Science – young researchers’ meeting 2006, 3-5 December 2006, Kyoto, Japan.

Xue Z Wnag, Solomon Abebe, Ruifa Li, Kevin J Roberts, Xiaojun Lai., (2006), “The Information content in NIR spectral data for slurries of organic crystals”, Proceedings of the 5th International Symposium on Measurement Techniques for Multiphase Flows (5th ISMTMF), Edited by Xiaoshu Cai, Yingxiang Wu, Zhiyao Huang, Shimin Wang and Mi Wang, Macau, 10-13 December 2006. pp.317-323.

Xue Z Wang, “On-line measurement of the shape and growth rates of organic crystals in reactors: advances and perspectives for control”, Proceedings of the 5th International Symposium on Measurement Techniques for Multiphase Flows (5th ISMTMF), Edited by Xiaoshu Cai, Yingxiang Wu, Zhiyao Huang, Shimin Wang and Mi Wang, Macau, 10-13 December 2006. pp.443-449.

CY Ma, XZ Wang, J Calderon De Anda, KJ Roberts, (2006), “Multi-dimensional population balance modelling incorporating real-time crystal shape measurement via in-process imaging”, Control of Particulate Processes VII, 29 October – 2 November, 2006, Harrison Hot Springs, British Columbia, Canada.

Radoslav Y Penchev, Richard Tweedie, Xue Z Wang, Kevin J Roberts (2006), “Monitoring crystallisation of organic chemicals using ultrasound spectroscopy”, Control of Particulate Processes VII, 29 October – 2 November, 2006, Harrison Hot Springs, British Columbia, Canada.
Xue Z Wang, (2006), “Shape - the final frontier”, Control of Particulate Processes VII, 29 October – 2 November, 2006, Harrison Hot Springs, British Columbia, Canada.

Jan Willem Gerristen, Ruifa Li, Radoslav Penchev, Xue Zhong Wang, Kevin Roberts, Richard Tweedie, “Online shape analysis of particles using an in-situ vision system”, Control of Particulate Processes VII, 29 October – 2 November, 2006, Harrison Hot Springs, British Columbia, Canada.

Rui F. Li, Xue Z. Wang, Solomon B. Abebe, Xaiojun Lai (2006), “Wavelength selection and calibration model development using genetic algorithm and PLS in applying NIR to monitoring multiple properties of crystallisation”, Control of Particulate Processes VII, 29 October – 2 November, 2006, Harrison Hot Springs, British Columbia, Canada.

FV Buontempo, XZ Wang, A Young, D Osborn, “Induction of decision trees using genetic programming for modelling eco-toxicity data: adaptive discretization of real-valued endpoints”, Proceedings of the 2006 UK Workshop on Computational Intelligence (UKCi2006), Edited by Xue Z Wang and Ruifa Li, 4-6 September 2006, Leeds, UK. pp. 25-39.

Ruifa Li, Xue Z Wang, Gillian B Thomson, (2006), “Camera model integrating crystal morphology prediction with on-line shape measurement using imaging”, Proceedings of the 2006 UK Workshop on Computational Intelligence (UKCi2006), Edited by Xue Z Wang and Ruifa Li, 4-6 September 2006, Leeds, UK. pp. 85-92.

Xue Z Wang, Caiyun Ma, Kevin J Roberts, Jorge Calderon De Anda, (2006), “On-line imaging and image analysis for monitoring the shape and growth of pharmaceutical crystals”, Proceedings of the 2006 UK Workshop on Computational Intelligence (UKCi2006), Edited by Xue Z Wang and Ruifa Li, 4-6 September 2006, Leeds, UK. pp. 297-301.
Xue Z Wang, (2006), “Data mining: methodologies and applications in process engineering”, IChemE Workshop, 8 September 2006, Surrey, UK.

XZ Wang*, FV Buontempo (PhD student), Mwense MC(PhD student), NJ Horan, A Young, D Osborn, (2005) “Induction of decision trees using genetic programming for the development of SAR toxicity models”, Proceedings of UKCI2005 - The 2005 UK Workshop on Computational Intelligence, Birkbeck University of London, London, 5-7 September 2005, UK., pp.169-175.

J Calderon De Anda(PhD student), XZ.Wang*, K.Roberts, (2005) “Shape monitoring and classification in pharmaceutical crystallisation based on on-line imaging and image analysis”, PSA2005 – Particulate Systems Analysis 2005, 21-23 September 2005, Stratford-upon-Avon, UK.

H. Al-Bazzaz (PhD student) and X.Z. Wang*, (2005), “New statistical process control charts for batch operations based on independent component analysis”, PSA2005 – Particulate Systems Analysis 2005, 21-23 September 2005, Stratford-upon-Avon, UK.
R.Penchev, K. Roberts, R.Tweedie, X.Z.Wang, (2005), “Monitoring crystallisation of organic materials via ATR FTIR and ultrasound spectroscopy techniques”, PSA2005 – Particulate Systems Analysis 2005, 21-23 September 2005, Stratford-upon-Avon, UK.

XZ Wang*, (2005), Inductive data mining for automatic construction of causal models from process data. Oral presentation, one-day conference on Data Mining & Decision Support Techniques, Cheshire Innovation Park, Nr Chester, 16 March 2005.

H Al-Bazzaz and XZ Wang*, (2005) New statistical process control charts for batch operations based on independent component analysis, 7th Word Congress of Chemical Engineering, Glasgow, 10-14 July 2005.

FV Buontempo (PhD student), XZ Wang*, Mwense MC(PhD student), NJ Horan, A Young, D Osborn, (2005) An integrated data mining system for ecotoxicity prediction of  speciality organic chemicals, 7th Word Congress of Chemical Engineering, Glasgow, 10-14 July 2005.

XZ Wang*, J Calderon De Anda, KJ Roberts, (2005) Shape monitoring and classification in pharmaceutical crystallization based on on-line imaging and image analysis, 7th Word Congress of Chemical Engineering, Glasgow, 10-14 July 2005.

RF Li, GB Thomson, G White, J Calderon De Anda, XZ Wang*, KJ Roberts, (2005) Combining morphological modelling and online imaging technique for on-line crystal shape recognition in batch crystallisation processes, 7th Word Congress of Chemical Engineering, Glasgow, 10-14 July 2005.

MC Mwense (PhD student), XZ Wang*, FV Buontempo (PhD student), NJ Horan, A Young, D Osborn, (2005) QSAR approach for mixture toxicity prediction using independent latent descriptors and fuzzy membership functions, 3rd International Symposium on Computational Methods in Toxicology and Pharmacology Integrating Internet Resources (CMTPI-2005), 29 October - 1 November 2005, Shang Hai.

FV Buontempo (PhD student), XZ Wang*, Mwense MC(PhD student), NJ Horan, A Young, D Osborn, (2005) Data mining and knowledge discovery for ecotoxicity prediction of  speciality organic chemicals, 3rd International Symposium on Computational Methods in Toxicology and Pharmacology Integrating Internet Resources (CMTPI-2005), 29 October - 1 November 2005, Shanghai.

XZ Wang*, FV Buontempo (PhD student), Mwense MC(PhD student), NJ Horan, A Young, D Osborn, (2005) Genetic programming for the induction of decision trees to model ecotoxicity data.  3rd International Symposium on Computational Methods in Toxicology and Pharmacology Integrating Internet Resources (CMTPI-2005), 29 October - 1 November 2005, Shanghai.

M Mwense (PhD student), XZ Wang*, FV Buontempo (PhD student) , N Horan (School Civil Eng), “Prediction of non-interactive mixture toxicity of organic compounds base don a fuzzy set method”, Edited by M Withall and C Hinde
In: Proceedings of the 2004 UK Workshop on Computacional Intelligence – UKCI-2004, ISBN: 1-874152-11-X, Loughborough, September 2004. pp. 121-128.

J Calderon De Anda (PhD student), XZ Wang*, KJ Roberts,
“Real-time image analysis for on-line monitoring of product shape in crystallisation””
Edited by M Withall and C Hinde
In: Proceedings of the 2004 UK Workshop on Computacional Intelligence – UKCI-2004, ISBN: 1-874152-11-X, Loughborough, September 2004. pp. 19-26.

J Calderon De Anda, XZ Wang*, KJ Roberts
“Real-time product mrphology monitoring in batch crystallisation using on-line microscopy and image analysis”
BACG British Association for Brustal Growth September Meeting 2004, Leeds, September 2004.

R Garcia-Flores (PhD student), XZ Wang*, B Hua, ML Lu
“Advanced information systems for process control and supply chain integration”
Edited by B Chen and AW Westerberg
In: Computer-Aided Chemical Engineering 15, Elsevier Science, Amsterdam, ISBN: 1570-7946,
Conf: PSE2003, Kunming, China, 6 pages, pp. 636-641, 2003. Conference held in Jan 2004.

LZ Stec (PDRA) , PK Bell, A Borissova (PFRA), MFairweather ＧGE Goltz, A McKay, XZ Wang*
“Reconfigurable batch processes: innovative design of the engineering side of chemical supply chains”
Edited by B Chen and AW Westerberg
In: Computer-Aided Chemical Engineering 15, Elsevier Science, Amsterdam, ISBN: 1570-7946
Conf: PSE2003, China, 6 pages, pp. 346-351, 2003. Conference held in Jan 2004.

R Batres, ML Lu, XZ Wang
Concurrent process engineering and integrated decision making
Edited by B Chen and AW Westerberg
In: Computer-Aided Chemical Engineering 15, Elsevier Science, Amsterdam, ISBN: 1570-7946
Conf: PSE2003, China, 6 pages, pp.160-165, 2003. Conference held in Jan 2004.

J Calderon De- Anda (PhD student), XZ Wang*, XJ Lai, KJ Roberts
On-line product morphology monitoring and control in batch crystallisation reactors employing advanced image analysis and data interpretation techniques
CGOM6 – 6th International Workshop on Crystal Growth, Glasgow, Poster, August 2003.

RY Penchev, XZ Wang*, XJ Lai, KJ Roberts, R Tweedie
Monitoring and control of batch crystallisation processes using USS and FTIR spectroscopy
CGOM6 – 6th International Workshop on Crystal Growth, Glasgow, Poster, August 2003.

YM Sebzalli (PhD student), XZ Wang*
“Joint analysis of process and operator performance”
ESCAPE-11: 11th European Symposium on Computer Aided Process Engineering,
The Hague, The Netherlands, Oral, Paper in proceedings, April 2002.

Wang XZ, Invited Keynote: An Agent-Based Concurrent Engineering System for Chemical Supply Chain Simulation and Management Support” JSPS (Japan Society for the Promotion of Science) International Workshop on Safety-Assured Operation and Concurrent Engineering, Yokohama, Japan,  December 2000.

An agent-based concurrent engineering system for supply chain management and simulation
International Workshop on Safety-Assured Operation and Concurrent Engineering
Yokohama, Japan, Invited Keynote
Paper in proceedings, B-1~B-16, 3~5 December, 2000.

R Garcia-Flores (PhD student), XZ Wang*
“Agent-based information flow for process industries’ supply chain modelling”,
PSE2000: 7th International Symposium on Process Systems Engineering,
Keystone, Colorado, USA, Oral, Paper in proceedings, July, 2000.

YM Sebzalli (PhD student), RF Li (PhD student), FZ Chen (PDRA), XZ Wang*
"Knowledge Discovery from Process Operational Data for Assessment and Monitoring of Operator Performance" PSE2000: 7th International Symposium on Process Systems Engineering,
Keystone, Colorado, USA, Poster, Paper in proceedings, July, 2000.

B Yuan (PhD student), XZ Wang*
“Knowledge extraction from operational records of batch processes using multilevel PCA and inductive learning”
Process Control and Instrumentation 2000 – An International Conference to Mark the Millennium
Oral, Paper in preprints, July , 2000.

R Garcia-Flores (PhD student), XZ Wang
“Chemical supply chain modelling and simulation using agent-based technique”
Process Control and Instrumentation 2000 – An International Conference to Mark the Millennium
Oral, Paper in preprints, July , 2000.

D Sampson (MSc student), XZ Wang*
“Application of Bayesian networks to troubleshooting distillation columns”
ESCAPE-9: 9th European Symposium on Computer Aided Process Engineering, Budapest, Hungary
Poster, Paper in proceedings, June , 1999.

FZ Chen (PDRA), XZ Wang*
"An integrated data mining system and its application to process operational data analysis"
ESCAPE-9: 9th European Symposium on Computer Aided Process Engineering, Budapest, Hungary
Poster, Paper in proceedings, June, 1999.

B Yuan (PhD student), XZ Wang*, FZ Chen (PDRA), T Morris (AH Marks & Company Ltd)
 “Software analyser design using data mining technology for toxicity prediction of aqueous effluents”
Press’99: 2nd Conference on Process Integration, Modelling and Optimisation for Energy Saving and Pollution Reduction, Budapest, Hungary, Poster, Paper in proceedings, June, 1999

XZ Wang*, FZ Chen (PDRA), RF Li (PhD student), C McGreavy
“Data mining for monitoring and diagnosis of the MTBE reactor and reactive distillation process”
ISCRE15: 15th International Symposium on Chemical Reaction Engineering
California, USA, Oral, Paper abstract in proceedings, 1998.

YC Huang (PDRA), XZ Wang*
"Application of causal fuzzy networks to wastewater treatment plants"
ISCRE15: 15th International Symposium on Chemical Reaction Engineering
California, USA, Poster, Paper abstract in proceedings, 1998.

BH Chen (PhD student), ZG Shang (Visiting RA), SH Yang (Visiting PDRA), XZ Wang, C McGreavy
 “Operational support system for on-line faults monitoring in chemical manufacturing”
 SAFEPROCESS’97: IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, Hull, UK, Oral, Paper in preprints, Ed RJ Patton, J Chen, Vol 2, 932-937, August 1997.

SH Yang (Visiting PDRA), BH Chen (PhD student), XZ Wang, C McGreavy
 “Soft sensor based fault diagnosis of industrial fluid catalytic cracking reactor”
 SAFEPROCESS’97: IFAC Symposium on Fault Detection, Supervision and Safety for Technical Processes, Hull, UK, Oral, Paper in preprints, Ed by RJ Patton, J Chen, Vol 1,240-245, August 1997.

XZ Wang*, C McGreavy
“Data mining for safety and operability studies in process industries”
PADD’97 - First International Conference on Data Mining and Knowledge Discovery in Databases, London. ISBN: 0 952555 7 6, Oral, Paper in proceedings, 271-292, April 1997.

M Zhang (PhD student), XZ Wang*, C McGreay
 “Team knowledge for goal-sharing conflicts in concurrent process engineering”
 PAAM 96 - The First International Conf. and  Exhibition on The Practical Application of Intelligent Agents and Multi-agent Technology, London , ISBN: 0 9525554 3 3, Oral, Paper in proceedings, Edited by B Crabtree, N Jennings, 773-782, April, 1996.

ML Lu, HS Li, R Batres, Y Naka, ZZ Shi, XZ Wang, C McGreay
  “Concurrency coordination in agent-based operational design of chemical processes”
 PAAM 96 - The First International Conference and  Exhibition on The Practical Application of Intelligent Agents and Multi-agent Technology
 London , ISBN: 0 9525554 3 3, Oral, Paper in proceedings, Edited by B Crabtree, N Jennings
375-385, April, 1996.

ML Lu, ZZ Shi, XZ Wang, C McGreavy , Y Naka
“Agent configuration in a concurrent engineering environment for chemical manufacturing”
3rd international Conf. on Concurrent Engineering & Electronic Design Automation
Bournemouth, UK.   Oral, Paper in proceedings, January, 1996.

XZ Wang*, SH Yang (Visiting PDRA), C McGreavy
 “Machine learning fault models of industrial R-FCC processes”
 IFAC (International Federation on       Automatic Control) Workshop on On-line Fault Detection and Supervision in the Chemical Process  Industries
 Newcastle Upon Tyne, UK,    Oral, Paper in preprints, 174-179, 1995.

XZ Wang*, ML Lu, C McGreavy
 "Design of an operator decision support environment for crude distillation unit".
 ESCAPE4 - The  4th European Symposium on Computer Aided Process System Engineering
 Dublin.  Poster, Paper in proceedings, pp. 33-40, 1994.

XZ Wang*, SA Yang (Visiting RA), ML Lu, C McGreavy,
 "Performance-oriented mechanical design of distillation columns",  
 IChemE Research Event
 University College London, Oral, Paper in Proceedings, 918-921, January, 1994.

SA Yang (Visiting RA), Y Hashimoto, ML Lu, XZ Wang, C McGreavy
 “Cocurrent process and control system design"
 The 5th two day International Symposium on Application of Multi-Variable System Technologies
 Bradford, UK
 ISBN: 0 85298 828 1,  Oral, “Appl. of multivariate system techniques, Ed R Whalley, 41-47, March 1994.

XZ Wang*, CG Wu
 “An intelligent dynamic simulator for the residual fluid catalytic process” 
 MICONEX’92 – The 5th multinational instrumentation and control conference
Oral, Paper in proceedings, 104-109, 1992.

XZ Wang*, XY Fang, XM Xu, ZZ Shi, F Shen
 “Integrating deep knowledge modelling with object-oriented knowledge representation in an expert system for refinery distillation engineering”
INTERPEC China’91:  International Conference on Petroleum  Refining and Petrochemical Processing Beijing, Oral, Paper in proceedings, 972-978, September 1991.