Research Interests:
· Modeling and Performance Analysis of Discreteevent Systems.
· Petri Nets.
· Algorithms.
Software:
GPenSIM (Generalpurpose Petri Net Simulator and RealTime Controller):
http://www.davidrajuh.net/gpensim
Davidrajuh, R. (2018) “Modeling DiscreteEvent Systems with GPenSIM” Springer. ISBN13: 9783319731018 
Davidrajuh, R. (2021) “Petri Nets for Modeling of Large Discrete Systems” Springer. ISBN13: 9789811652028 


Davidrajuh (2023) “ Colored Petri Nets for Modeling Discrete Systems: A practical approach based on GPenSIM,” Springer, ISBN: 9789819968589 

165 
Kossowski, T., Samolej, S.; and Davidrajuh, R. (2024) " Simulation in the GPenSIM Environment of the Movement of Vehicles in the City Based on Their License Plate Numbers," Electronics. 2024, 13(4), 683; DOI: https://doi.org/10.3390/app131810252. Open Access 
164 
Davidrajuh, R. (2023) "Generating Random Petri Nets for GPenSIM environment," 9th International Conference on Systems and Informatics (ICSAI 2023), 1618 December 2023, Changsha, China (virtual conference). 
163 
Davidrajuh, R. (2023) "A New Closeness Centrality Measure based on Minimum Weight Spanning Tree," 9th International Conference on Systems and Informatics (ICSAI 2023), 1618 December 2023, Changsha, China (virtual conference). 
162 
[A book published by Springer] Davidrajuh, R. (2023) Colored Petri Nets for Modeling of Discrete Systems: A Practical Approach With GPenSIM. Springer. ISBN: 9789819968589. 
161 
Davidrajuh, R. (2023) "A Classifier of Petri Nets for GPenSIM Environment," 7th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT2023), October 2628, 2023, Ankara, Turkey. 
160 
Davidrajuh, R. (2023) "Indexed Coloring in GPenSIM for Developing Colored Petri Nets," 7th International Symposium on Multidisciplinary Studies and Innovative Technologies (ISMSIT2023), October 2628, 2023, Ankara, Turkey. 
159 
Mohammad, A., Belayneh, M. A., and Davidrajuh, R. (2023) " PhysicsBased Swab and Surge Simulations and Machine Learning Modeling of the Field Telemetry Swab Dataset," App. Sci. 2023, 13(18), 10252; DOI: https://doi.org/10.3390/app131810252. Open Access 
158 
Mohammad, A. and Davidrajuh, R. (2023) "Extracting a Mathematical Model from Oil Drilling Data using GMDH," 27th Int Conf on Circuits, Systems, Communications and Computers (CSCC 2023), Rhodes Island (Rodos Island), Greece. July 1922, 2023. 
157 
Davidrajuh, R. (2023) "A Linear Algebraic Toolbox for Analyzing Strongly Connected Components," 27th Int Conf on Circuits, Systems, Communications and Computers (CSCC 2023), Rhodes Island (Rodos Island), Greece. July 1922, 2023. 
156 
Davidrajuh, R., Krenczyk, D., and Skolud, B. (2023) “ Modular distributed models of production systems: a Petri netbased approach,” Bulletin of the Polish Academy of Sciences, Technical Sciences. 71(2), 2023; Article number: e144621. DOI: 10.24425/bpasts.2023.144621 Open Access 
155 
Mohammad, A., Panchalingam, M., Karunakaran, S., and Davidrajuh, R. (2022) "Prediction of Downhole Pressure While Tripping," 14th IEEE Computational Intelligence and Communication Networks (CICN 2022), AlKhobar, Saudi Arabia, 0406 December 2022. 
154 
Montreer, K., Bienvenu, L., Franquinet, J., and Davidrajuh, R. (2022) "Modeling APAP Metabolism in Human Liver with Petri Nets," IEEE 26th International Conference on Intelligent Engineering Systems 2022 (INES 2022), Crete, Greece, 1215 August 2022. 
153 
Mohammad, A. and Davidrajuh, R. (2022) "Understanding RealTime Data from Drilling for Oil & Gas in the North Sea," 26th International Conference on Circuits, Systems, Communications and Computers (CSCC 2022), Rhodes Island, Greece, 1922 July 2022. 
152 
Davidrajuh, R., Krenczyk, D., and Skould, B. (2022) "Modeling Production Systems as Modular Systems : A Petri Nets Based Approach," International ScientificTechnical Conference on Manufacturing (MANUFACTURING 2022), Poznan, Poland, 1619 May 2022. 
151 
Mohammad, A., and Davidrajuh, R. (2022) " Review of Four Prominent Works on Swab and Surge Mathematical Models ,” International Journal of Simulation. Systems, Science and Technology. 23, pp.8.18.9. DOI: 10.5013/IJSSST.a.23.01.08, Open Access. 
150 
Sandbakk, T. S., Usama, M., and Davidrajuh, R. (2022) " Simulating a Monitoring System for an Aquaponics Farm ,” International Journal of Simulation. Systems, Science and Technology. 23, pp.7.17.8. DOI: 10.5013/IJSSST.a.23.01.07, Open Access. 
149 
Guniem, Mohammed Z. and Davidrajuh, R. (2022) "Simulation of Mass Vaccination Programs: Centralized versus Mobile Vaccination ,” International Journal of Simulation. Systems, Science and Technology. 23, pp.6.16.7. DOI: 10.5013/IJSSST.a.23.01.06, Open Access. 
148 
Davidrajuh, R. and Joseph, J. F.(2022) "Towards Modeling Road Tunnels: A Petri Nets based Approach ,” International Journal of Simulation. Systems, Science and Technology. 23, pp.5.15.5. DOI: 10.5013/IJSSST.a.23.01.05, Open Access. 
147 
Mohammad A, Davidrajuh R. (2022) “Modeling of Swab and Surge Pressures: A Survey,” Applied Sciences. 2022; 12(7):3526. https://doi.org/10.3390/app12073526 
146 
Jaiswal, R., Maatug, F., Davidrajuh, R., and Rong, C. (2021) “Anomaly Detection in Smart Meter Data for Preventing Potential Smart Grid Imbalance,” 4th Artificial Intelligence and Cloud Computing Conference (AICCC’21), Dec 1719, 2021, online conference. 
145 
[A book published by Springer] Davidrajuh, R. (2021) “Petri Nets for Modeling of Large Discrete Systems,” Springer. ISBN13: 9789811652028 
144 
Jaiswal, R., Davidrajuh, R., and Wondimagegnehu, S. M. (2021) "Fog Computing for Efficient Predictive Analysis in Smart Grids," 3Proceedings of the 2021 International Conference on Artificial Intelligence and its Applications ICARTI 2021, Mauritius, 0910 December, 2021. ACM Publications 2021 ISBN 9781450385756. 
143 
Jaiswal, R. and Davidrajuh, R. (2021) "Optimal Design of Wind Farm Collector System using a Novel Steiner Spanning Trees," 33rd Norwegian ICT conference for research and education, Trondheim, Norway, 29 Nov1 Dec, 2021. 
142 
Jaiswal, R. and Davidrajuh, R. (2021) “A Simple Algorithm for finding Steiner Spanning Trees,” International Conference on Artificial Intelligence and its Applications (icARTi2021), Mauritius, 910 December 2021. 
141 
Jaiswal, R. and Davidrajuh, R. (2021) “Fog Computing for Efficient Predictive Analysis in Smart Grids,” International Conference on Electrical, Computer, Communications and Mechatronics Engineering (ICECCME), Mauritius, 0708 October 2021. 
140 
Roci, A. and Davidrajuh, R. (2021) “Developing a Bridge from GPenSIM to NuSMV for Model Checking,” 33^{rd} European Modeling & Simulation Symposium – (EMSS 2021), Krakow, Poland, 1517 September 2021. 
139 
Haraldsen, E., Østrådt, K., and Davidrajuh, R. (2021) “Understanding the importance of efficient visitor flow within Tokyo Skytree”, UKSimAMSS 23rd International Conference on Modelling & Simulation, Cambridge University, 31 March  2 April 2021. Open Access. 
138 
Valberg, V., and Davidrajuh, R. (2021) “Estimating Increased Cost of Salmon Lice due to Global Warming: A Petri Net based Approach”, UKSimAMSS 23rd International Conference on Modelling & Simulation, Cambridge University, 31 March  2 April 2021. Open Access. 
137 
Hathibelagal, M. A., and Davidrajuh, R. (2021) “Modeling Melanin Biosynthesis Pathway with Petri Nets”, UKSimAMSS 23rd International Conference on Modelling & Simulation, Cambridge University, 31 March  2 April 2021. Open Access. 
136 
R. Davidrajuh (2021) "Modularizing Petri Nets for Modeling of Large Manufacturing Systems: An Approach based on GPenSIM" PhD thesis (in Mechanical Engineering), Silesian University of Technology, Poland. The Faculty of Mechanical Engineering, Department of Engineering Processes Automation and Integrated Manufacturing Systems. 
135 
Roci, A. and Davidrajuh, R. (2020) “A new dynamic algorithm for Petri Nets Slicing,” 14th IEEE International Conference on Application of Information and Communication Technologies (AICT2020), Virtual Conference. 
134 
Jaiswal, R.; Davidrajuh, R.; Rong, C. (2020) “Fog Computing for Realizing Smart Neighborhoods in Smart Grids”. Computers 2020, 9, 76. Open Access. 
133 
Davidrajuh, R. (2020) “Extracting Petri Modules From Large and Legacy Petri Net Models," in IEEE Access, vol. 8, pp. 156539156556, 2020, doi: 10.1109/ACCESS.2020.3020213. Open Access. 
132 
Kaid, H., AlAhmari, A., Li, Z., and Davidrajuh, R. (2020) “Automatic Supervisory Controller for Deadlock Control in Reconfigurable Manufacturing Systems with Dynamic Changes,” Applied Sciences, 2020, 10(15), 5270. Open Access. 
131 
Davidrajuh, R. (2020) “Experimenting with the Static Slicing of Petri Nets,” 24th International Conference on Intelligent Engineering Systems (INES 2020), July 810, 2020, Reykjavík, Iceland. IEEE, 9781728110592 
130 
Kaid, H., Al‐Ahmari, A., Li, Z., and Davidrajuh, R. (2020) “Intelligent Colored Token Petri Nets for Modeling, Control, and Validation of Dynamic Changes in Reconfigurable Manufacturing Systems” Processes, 2020, 8, 358; doi:10.3390/pr8030358. Open Access. 
129 
Behzad, B., Farzad, M., and Davidrajuh, R. (2020) “Understanding the IKEA Warehouse Processes and Modeling using Modular Petri Nets,” UKSimAMSS 22nd International Conference on Modelling & Simulation (UKSim2020), 2527 March 2020, Cambridge University, UK. International Journal of Simulation. Systems, Science and Technology, 21(2), pp.3.13.7. DOI: 10.5013/IJSSST.a.21.02.03, Open Access. 
128 
Davidrajuh, R. and Rong, C. (2020) “Introducing a New Toolbox for Theory of Connection,” UKSimAMSS 22nd International Conference on Modelling & Simulation (UKSim2020), 2527 March 2020, Cambridge University, UK. International Journal of Simulation. Systems, Science and Technology, 21(2), pp.4.14.5. DOI: 10.5013/IJSSST.a.21.02.04, Open Access. 
127 
AlAhmari, A., Kaid, H., Li, Z., and Davidrajuh, R. (2020) “Strict Minimal SiphonBased Colored Petri Net Supervisor Synthesis for Automated Manufacturing Systems With Unreliable Resources,” IEEE Access, Vol. 8, 2020, pp. 2241122424. DOI: 10.1109/ACCESS.2020.2968469. Open Access. 
126 
Kaid, H., AlAhmari, A., Li, Z., and Davidrajuh, R. (2020) “Single ControllerBased Colored Petri Nets for Deadlock Control in Automated Manufacturing Systems,” Processes, 2020, 8, 21. DOI: 10.3390/pr8010021. Open Access. 
125 
Davidrajuh, R., Skolud, B., and Krenczyk, D. (2020) “Incorporating Automatic Model Checking into GPenSIM,” in Bozejko & Bocewicz (eds.), Modelling and Performance Analysis of Cyclic Systems. (pp. 175187). Springer, Cham. DOI: 10.1007/9783030276522_9 
124 
Davidrajuh, R. (2019) “A New Modular Petri Net for Modeling Large DiscreteEvent Systems: A Proposal Based on the Literature Study,” Computers, 2019, 8(4), 83; DOI: 10.3390/computers8040083. Open Access. 
123 
Davidrajuh, R. and Rong, C. (2019) "Solving Scheduling Problems with Randomized & Parallelized BruteForce Approach," 12th International Conference on Computer Science and Information Technologies (CSIT 2019), September 2327, 2019, Yerevan, Armenia. 
122 
Davidrajuh, R. and Rong, C. (2019) “Finding the Pivotal Elements for Modularization of Petri Nets,” International Conference on Advanced Mechatronic Systems (ICAMechS), Kusatsu, Shiga, Japan, August 26  August 28, 2019. 
121 
Krenczyk D., Davidrajuh R., Skolud B. (2019) “Comparing Two Methodologies for Modeling and Simulation of DiscreteEvent Based Automated Warehouses Systems.” In: Hamrol A., Kujawińska A., Barraza M. (eds) Advances in Manufacturing II. Lecture Notes in Mechanical Engineering. Springer, Cham 
120 
Davidrajuh, R. and Roci, A. (2019) “Performance of Static Slicing Algorithms for Petri Nets.” International Journal of Simulation. Systems, Science and Technology, 20(S1), pp.15.115.7. DOI: 10.5013/IJSSST.a.20.S1.15. Top Review Score Certificate. Open Access. 
119 
Davidrajuh, R. and Krenczyk, D. (2019) "Extending GPenSIM for Model Checking on Petri Nets." International Journal of Simulation. Systems, Science and Technology, 20 (1), pp.13.113.08, DOI: 10.5013/IJSSST.a.20.01.13. Open Access. 
118 
Davidrajuh, R. (2019) "Developing a Toolbox for Modeling and Simulation of Elevators." International Journal of Simulation. Systems, Science and Technology, 20(S1), pp.1.11.6. DOI: 10.5013/IJSSST.a.20.S1.01. Open Access. 
117 
Davidrajuh, R., Skolud, B., and Krenczyk, D. (2019) "Finding Clusters in Petri Nets: An approach based on GPenSIM" Modeling Identification and Control, 2019, Vol. 40, No.1, pp.110. DOI: 10.4173/mic.2019.1.1. Open Access. 
116 
Davidrajuh, R. and Rong, C. (2018) “Measuring Network Centrality in Petri Nets.” the 2018 IEEE International Conference on Advanced Manufacturing, November 1618, 2018, in Yunlin, Taiwan. Best Paper Award! 
115 
Davidrajuh, R. (2018) “A New Petri Nets Based Approach for Modeling of Discrete Manufacturing System,” Advances in Intelligent Systems and Computing 2018, Volume 637. pp. 109120. 
114 
Roci, A. and Davidrajuh, R. (2018) “A PolynomialTime AlphaAlgorithm for Process Mining.” International Journal of Simulation. Systems, Science and Technology, 19(5), pp.12.112.7. DOI: 10.5013/IJSSST.a.19.05.12. Open Access. 
113 
Davidrajuh, R., Skolud, B., Krenczyk, D. (2018) “Performance Evaluation of Discreteevent Systems with GPenSIM,” Computers, 2018, 7(1), 8. DOI: 10.3390/computers7010008. Open Access. 
112 
Roci, and R. Davidrajuh (2018) “Scheduling Jobs in MultiGrid Environment: A Modeling Approach based on Petri Nets,” UKSimAMSS 20th International Conference on Modelling & Simulation (UKSim2018), Cambridge, UK, 2729 March 2018. 
111 
[A book published by Springer] Davidrajuh, R. (2018) “Modeling DiscreteEvent Systems with GPenSIM: An Introduction.” Springer. ISBN13: 9783319731018. 
110 
Davidrajuh, R. and Rong, C. (2018) “‘Firing Sequence’ as a Tool for the Analysis of Petri Nets,” 2018 International Conference on Advances in Big Data, Computing and Data Communication Systems (icABCD), August 0607, 2018, Durban, South Africa. 
109 
Davidrajuh, R. and Saadallah, N. (2017) “Implementing A Cohesive PT Nets with Inhibitor Arcs in GPenSIM,” International Journal of Simulation Systems, Science & Technology (IJSSST), 18(2), pp.8.18.6, June 2017. DOI: 10.5013/IJSSST.a.18.302.08. Open Access. 
108 
Davidrajuh, R. (2017) “ActivityOriented Petri Nets: Aligning Realworld Buffers with Virtual Places,” International Journal of Simulation Systems, Science & Technology (IJSSST), 18(3), pp.7.17.6, September 2017. DOI: 10.5013/IJSSST.a.18.03.07. Open Access. 
107 
Davidrajuh, R. (2017) “Modelling LargeScale Discrete Event Systems as Modular Petri Nets using GPenSIM,” International Journal of Simulation Systems, Science & Technology (IJSSST), 18(4), pp.8.18.6, December 2017. DOI: 10.5013/IJSSST.a.18.04.08. Open Access. 
106 
Davidrajuh, R. (2017) “Petri Net based Modeling and Control of Humanoid Robots,” International Journal of Simulation, Systems, Science & Technology (IJSSST), 17(32), pp. 40.140.9. DOI: 10.5013/IJSSST.a.17.32.40. Open Access. 
105 
Skolud, D. Krenczyk, and R. Davidrajuh (2017) “Multiassortment production flow synchronization. Multiscale modelling approach,” 21st International Conference on Innovative Manufacturing Engineering & Energy (IManE&E 2017), Iasi, Romania, 2526 May 2017. 
104 
R. Davidrajuh, B. Skolud, and D. Krenczyk (2017) “GPenSIM for Performance Evaluation of Event Graphs,” International ScientificTechnical Conference on Manufacturing (MANUFACTURING 2017), Poznan, 2426 October 2017. DOI: 10.1007/9783319686196_28. Best Paper Award! 
103 
A. Jakobczyk, K. Nogaj, J. Diakun, and and R. Davidrajuh (2017) “Production Process Analysis in Conditions of ShortTerm Raw Materials Expiration Dates and Long Setup Times using Simulation Method,” International ScientificTechnical Conference on Manufacturing (MANUFACTURING 2017), Poznan, 2426 October 2017. 
102 
D. Krenczyk, B. Skolud, and R. Davidrajuh (2017) “An activityoriented petri net simulation approach for optimization of dispatching rules in job shop transient scheduling,” 11th International Conference on Soft Computing Models in Industrial and Environmental Applications (SOCO’17), Leon, Spain, 0608 September 2017. 
101 
R. Davidrajuh (2017) “Modular Petri Net Models of Communicating Agents: A GPenSIM Approach,” 11th International Conference on Soft Computing Models in Industrial and Environmental Applications (SOCO’17), Leon, Spain, 0608 September 2017. 
100 
R. Davidrajuh (2017) “A New Petri Nets Based Approach for Modeling of Discrete Manufacturing System,” Intelligent Systems in Production Engineering and Maintenance (ISPEM 2017), Wroclaw, Poland, 2829 September 2017. 
099 
Lekova, A., Ryan, D., and Davidrajuh, R., (2016) “Fingers and Gesture Recognition with Kinect v2 Sensor,” Information Technologies and Control, De Gruyter OPEN, Vol 3, 2006, pp. 2430. DOI: 10.1515/itc20170009. Open Access. 
098 
Davidrajuh, R. and Saadallah, N. (2016) “Implementation of “Cohesive PlaceTransition Nets with Inhibitor Arcs” in GPenSIM.” IEEE 2016 Asia Multi Conference on Modelling and Simulation, Kota Kinabalu, Malaysia, December 46, 2016. 
097 
Davidrajuh, R. (2016) “Aligning Virtual Places with Realworld Buffers, in ActivityOriented Petri Nets.” IEEE 2016 Asia Multi Conference on Modelling and Simulation, Kota Kinabalu, Malaysia, December 46, 2016. 
096 
Davidrajuh, R. (2016) “Modular Petri Nets: Modeling Large Discrete Event Systems Using GPenSIM.” IEEE 2016 Asia Multi Conference on Modelling and Simulation, Kota Kinabalu, Malaysia, December 46, 2016. 
095 
Skolud, B., Krenczyk, D., and Davidrajuh, R. (2016) “Solving repetitive production planning problems: An approach based on Activityoriented Petri nets”. 11th International Conference on Soft Computing Models in Industrial and Environmental Applications (SOCO), San Sebastian, Spain, October, 19–21, 2016. 
094 
Davidrajuh, R. (2016) “Outperforming Genetic Algorithm with a Brute Force approach based on Activityoriented Petri Nets”. 1th International Conference on Soft Computing Models in Industrial and Environmental Applications (SOCO), San Sebastian, Spain, October, 19–21, 2016. 
093 
Davidrajuh, R. (2016) “Detecting Existence of Cycles in Petri Nets: An algorithm that computes nonredundant (nonzero) parts of sparse adjacency matrix”. 1th International Conference on Soft Computing Models in Industrial and Environmental Applications (SOCO), San Sebastian, Spain, October, 19–21, 2016. 
092 
Davidrajuh, R. (2015) “A New TwoPhase Approach for Petri Net Based Modeling of Scheduling Problems”. Industrial Engineering, Management Science and Applications (ICIMSA 2015), Tokyo, Japan, May 2628, 2015. 
091 
Davidrajuh, R. (2015) “Modeling Humanoid Robot as a Discrete Event System: A Modular Approach based on Petri Nets”. IEEE 3rd International Conference on Artificial Intelligence, Modelling & Simulation, pp. 277285, Kota Kinabalu, Malaysia, December 2015. ISBN 9781467386753. IEEE Press. DOI: 10.1109/AIMS.2015.52. Best paper award! 
090 
Davidrajuh, R. and T. Try (2015) “Developing a Software Application for Identifying Potential Terrorists at Airports: Application of Predictive Profiling Using Fuzzy Logic”. IEEE 3rd International Conference on Artificial Intelligence, Modelling & Simulation, pp. 147153, Kota Kinabalu, Malaysia, December 2015. ISBN 9781467386753. IEEE Press. 
089 
Davidrajuh, R. (2014) “Benchmarking GPenSIM”. Lecture Notes in Electrical Engineering, Springer, Volume 312 (1), s. 373379, 2015. 
088 
Azab A., Meling, H., and Davidrajuh, R. (2014) "A FuzzyLogic Based Coordinated Scheduling Technique for InterGrid Architectures", K. Magoutis and P. Pietzuch (Eds.): DAIS 2014, LNCS 8460, pp. 171–185, 2014. 
087 
Davidrajuh, R. (2014) “Verifying Solutions to the Dining Philosophers Problem with ActivityOriented Petri Nets”. IEEE 4th International Conference on Artificial Intelligence with applications in Engineering and Technology, Kota Kinabalu, Malaysia, 0305 December 2014. 
086 
Davidrajuh, R. (2014) “Solving assembly line balancing problems with emphasis on cost calculations: A Petri nets based approach”, IEEE European Modelling Symposium (EMS), Pisa, Italy, October 2123, 2014. 
085 
Davidrajuh, R. (2014) “Efficient data structures for a new Petri net based simulator”, IEEE European Modelling Symposium (EMS), Pisa, Italy, October 2123, 2014. 
084 
Davidrajuh, R. (2013) “Distributed Workflow based Approach for Eliminating Redundancy in Virtual Enterprising,” Journal of Supercomputing (ISSN: 09208542), 63(1), pp. 107125, Publisher: Springer. Open Access. 
083 
Davidrajuh, R. (2013) “Benchmarking GPenSIM”, International Conference on Systems, Computing Sciences and Software Engineering (SCSS 13), Online Conference, 1214 December 2013. 
082 
Davidrajuh, R. (2013) “Adding PNML Capability to GPenSIM,” European Modelling Symposium 2013, Manchester, UK, 2022 November 2013. IEEE Press 2013 ISBN 9781479925780. pp. 173178. 
081 
Davidrajuh, R. (2013) “Revisiting Petri Net modeling of the Cigarette Smokers' Problem: A GPenSIM Approach.” European Modelling Symposium 2013, Manchester, UK, 2022 November 2013. IEEE Press 2013 ISBN 9781479925780. pp. 185190. 
080 
Davidrajuh, R. (2013) “Extended Reachability Graph of Petri Net for Cost Estimation”, 8th EUROSIM Congress on Modelling and Simulation, Cardiff, Wales, 1012 September, 2013. IEEE Press 2013 ISBN 9780769550732. pp. 378382. 
079 
Davidrajuh, R. (2013) “A Novel Approach for Reducing the Size of Petri Net Models of Resource Scheduling Problems”, International Conference on Medical Information and Computing Service (MICS), Tainan, Taiwan, 0304 August, 2013. 
078 
Davidrajuh, R. (2013) “Realizing Simple Petri Net Models for Complex and Large Scheduling Problems”, IEEE UKSimAMSS 15th International Conference on Modelling and Simulation, Cambridge University, 1012 April, 2013. 
077 
Davidrajuh, R. (2012) “Developing a Petri Nets based RealTime Control Simulator,” International Journal of Simulation, Systems, Science & Technology (IJSSST), 13(2), pp. 2836; published by the United Kingdom Simulation Society. Open Access. 
076 
Davidrajuh, R. (2012) "Estimating Machine Startup Timing with Petri Nets”, IEEE International Conference on Industrial Engineering and Engineering Management (IEEM 2012), December 1013, Hong Kong, China. 
075 
Davidrajuh, R. (2012) “Achieving Atomicity of Tokens in Time Petri Nets”, European Modelling Symposium (EMS2012), November 14–16, 2012, Malta. 
074 
Davidrajuh, R. (2012) “Modeling Resource Management Problems with ActivityOriented Petri Nets”, European Modelling Symposium (EMS2012), November 14–16, 2012, Malta 
073 
Davidrajuh, R. (2012) “Activity Based Costing with Petri Nets”, European Modelling Symposium (EMS2012), November 14–16, 2012, Malta. 
072 
Davidrajuh, R. (2012) “Designing FaultTolerant Autonomous Systems with Adaptive Supervisory Control”, European Modelling Symposium (EMS2012), November 14–16, 2012, Malta. 
071 
Davidrajuh, R. (2012) "ActivityOriented Petri Net for Scheduling of Resources", 2012 IEEE International Conference on Systems, Man, and Cybernetics (IEEE SMC 2012), October 1417, Seoul, Korea. 
070 
Davidrajuh, R. and Lin, B. (2011) "Exploring Airport Traffic Capability Using Petri Net based Model", Expert Systems With Applications (ESWA), 38 (2011) pp. 1092310931; Publisher: Elsevier publications. 
069 
Davidrajuh, R. (2011) "Design Issues in Developing a RealTime Control Simulator", IEEE UKSim 5th European Modelling Symposium On Computer Modelling and Simulation (EMS2011), Madrid, Spain, 16  18 November 2011. Publisher: IEEE Computer Society. Los Alamitos, CA; ISBN 9780769546193; pp. 156161. 
068 
Davidrajuh, R. (2011) "Model Simplification in Petri Net Models", IEEE UKSim 5th European Modelling Symposium on Computer Modelling and Simulation (EMS2011), Madrid, Spain, 16  18 November 2011. Publisher: IEEE Computer Society. Los Alamitos, CA; ISBN 9780769546193. pp. 162167. 
067 
Davidrajuh, R. (2011) "Scheduling using 'Activitybased Modeling' ", 2011 IEEE Conference on Computer Applications & Industrial Electronics (ICCAIE 2011), Penang, Malaysia, December 47, 2011. Publisher: IEEE; ISBN 9781457720574. pp. 5054. 
066 
Davidrajuh, R. (2011) "Extending a Petri Net Simulator as a RealTime Control Simulator'", IEEE International Conference on Control System, Computing and Engineering (ICCSCE 2011), Penang, Malaysia, November 2527, 2011. Publisher: IEEE; ISBN 9781457716416. pp. 16. 
065 
Davidrajuh, R. (2011) "Representing Resources in Petri Net Models: Hardwiring or Softcoding?", 2011 IEEE International Conference on Service Operations and Logistics, and Informatics, Beijing, China, July 1012, 2011; ISBN: 9781457705724; IEEE Press: NJ, USA; pp. 6267. 
064 
Davidrajuh, R. (2010) "Geometrical Modeling for Material Flow Management", Communications of the IIMA (CIIMA), (ISSN: 15435970), Vol. 10, Issue. 1, pp. 1723. 
063 
Davidrajuh, R. and Bjørke, Ø. (2010) "A Mathematical Modeling Approach Based on the Theory of Connection", International Journal of Technology, Modeling and Management (ISSN: 09757171), Vol.1, No.1, JanuaryJune 2010, pp. 19. 
062 
Davidrajuh, R. (2010) “Smart Grid Solution for the Electricity Needs of NorthEast Sri Lanka”. Journal of Next Generation Information Technology (ISSN 20928637), Vol. 1, No. 1, pp. 19 – 31. 
061 
Davidrajuh, R. (2010) "GPenSIM: A New Petri Net Simulator", in "Petri Nets Applications" edited by Pawel Pawlewski, ISBN 9789533070476, InTech, February 2, 2010. Open Access. 
060 
Davidrajuh, R. (2010) "Modeling Ethical Decisions", in the book "Modeling Simulation and Optimization  Focus on Applications" edited by Shkelzen Cakaj, ISBN 9789533070551, InTech, March 3, 2010. Open Access. 
059 
Davidrajuh, R. (2010) "Is Norway an Information Society", 2010 2nd IEEE/ IACSIT International Conference on Information and Financial Engineering (ICIFE 2010), 1719 September 2010, Chongqing, China. IEEE Press, ISBN: 9781424469253, pp. 918921. 
058 
Davidrajuh, R. and Molnar, I. (2009) “Designing a new tool for Modeling and Simulation of discreteevent based systems”. Issues in Information Systems (ISSN 15297314), Vol. X. No. 2, pp. 472477. 
057 
Nabavi, A. and Davidrajuh, R. (2009) “Designing an assessment tool for measuring ereadiness of Iranian ICT companies”. Information Systems (ISSN 15297314), Vol. X, No. 2, pp. 175184. 
056 
Melberg, R. and Davidrajuh, R. (2009) “Modeling Atlantic Salmon Fish Farming Industry: Harvesting Sub Model”, World Academy of Science, Engineering and Technology, Vol. 57, 2009, pp. 10861096. 
055 
Davidrajuh, R. (2009). “Evaluating Performance of a Bluetoothbased Classroom Tool”. International Journal of Mobile Learning and Organisation (ISSN: 1746725X), Vol. 3, No. 2, pp. 148163. 
054 
Davidrajuh, R. (2009). “Design of Optimal Power Cogeneration for Northeast Sri Lanka based on Standalone Renewable Energy Systems”. International Journal of Sustainable Economy (ISSN: 17565804), Vol. 1, No. 2, pp. 155166. 
053 
Melberg, R., & Davidrajuh, R. (2009) “Dynamic Arc weight in Petri Nets,” IASTED International Conference Applied Simulation and Modelling (ASM 2009), Vol. 682, p. 064), September 0709, 2009, Mallorca, Spain. 
052 
Davidrajuh, R.(2009) "A Model for Greener Power Generation for NorthEast Sri Lanka Based on Standalone Renewable Energy Systems", in the book "Renewable Energy" edited by T J Hammons, ISBN 9789537619527, InTech, December 12, 2009. Open Access. 
051 
Davidrajuh, R. (2009) "Workflow based Approach for Eliminating Redundancy in Virtual Enterprising", 2009 IEEE International Symposium on Parallel and Distributed Processing with Applications, 1012 Aug. 2009, Chengdu, China. IEEE Press, ISBN: 9780769537474, pp. 579 – 583. 
050 
Davidrajuh, R. (2009) "Modeling Engineering Systems with Geometry" 2009 International Conference on Information Management and Engineering (ICIME2009), Kuala Lumpur, Malaysia, April 3  5, 2009: IEEE Computer Society, Los Alamitos, CA, USA, ISBN 9780769535951, pp. 5259. 
049 
Melberg, R. and Davidrajuh, R. (2009) "Modeling Atlantic Salmon Fish Farming Industry: Freshwater Sub Model Simulation" ACM/SIGSIM Spring Simulation Multiconference 2009 (SpringSim'09), March 2227, San Diego, CA, USA. 
048 
Melberg, R. and Davidrajuh, R. (2009). “Modeling Atlantic Salmon Fish Framing Industry”. IEEE International Conference on Industrial Technology (IEEE  ICIT 2009), 1013 February 2009, Churchill, Victoria, Australia. pp. 1370 – 1375. 
047 
Davidrajuh, R. (2008). “Building a Fuzzy Logic based Tool for Ereadiness Measurement”. Electronic Government, an International Journal (ISSN: 1740749),Vol. 5, No. 2, pp. 120130. 
046 
Davidrajuh, R. (2008). “A Conceptual Model for Ethical Business DecisionMaking under the Influence of Personal Relationships”. International Journal of Business and Systems Research (ISSN: 1751200X), Vol. 2, No. 2, pp. 107123. 
045 
Davidrajuh, R. (2008). "Towards, Measuring True EReadiness of a ThirdWorld Country: A Case Study on Sri Lanka", in Electronic Government: Concepts, Methodologies, Tools, and Applications (6 Volumes), Edited By: AriVeikko Anttiroiko, Published by IGI Global / Information Science Reference, Hershey, USA. ISBN: 9781599049472. chapter 5.35, pp. 29662976. 
044 
Davidrajuh, R. (2008). “A Computing Systems to Assist Business leaders in Making Ethical decisions” in IFIP International Federation for Information Processing, Volume 286; Towards Sustainable Society on Ubiquitous Networks, eds. Oya, M.,Uda, R., Yasunobu, C., (Boston: Springer), pp. 303–314. 
043 
Davidrajuh, R. (2008) “Developing a New Petri Net Tool for Simulation of Discrete Event Systems”. 2008 Second Asia International Conference on Modelling & Simulation, Kuala Lumpur, Malaysia, 1315 May 2008. Publisher: IEEE Computer Society: Los Alamitos, CA; ISBN 9780769531366; pp. 861866. 
042 
Davidrajuh, R. (2008) “Modeling Ethical DecisionMaking”. 10th International Conference on Computer Modelling and Simulation (EUROSIM/UKSiM 2008), 13 April, 2008, Cambridge, England. (ISBN: 9780769531144, Publisher: IEEE Computer Society, Los Alamitos, CA, USA; pp. 163168). 
041 
Davidrajuh, R. and Melberg, Rune (2008) “ArrayBased Logic for Realizing Inference Engine in Mobile Agents”. IEEE International Conference on Industrial Technology (IEEEICIT 2008), 2124 April, 2008, Chengdu, China. (ISBN: 9781424417063), Publisher: IEEE 
040 
Davidrajuh, R. (2007). “Exploring the use of Bluetooth in Building Wireless Information Systems”. International Journal of Mobile Communications (ISSN: 1470949X),Vol.5, No.1, pp. 110. 
039 
Davidrajuh, R. (2007). “ArrayBased Logic for Realizing Inference Engine in Mobile Applications”. I J of Mobile Learning and Organisation (IJMLO)(ISSN: 1746725X), Vol. 1, No.1, pp. 4157. 
038 
Davidrajuh, R. (2007). “A ServiceOriented Approach for Developing Adaptive Distribution Chain”, International Journal of Services and Standards (ISSN (Online): 17408857  ISSN (Print): 17408849), Vol. 3, No.1, pp. 64 – 78. 
037 
Davidrajuh, R. and Jensen, Ø. (2007) “Towards Modeling the Economies of Personal Relationships in Dyadic Business Exchanges”. Issues in Information Systems (ISSN 15297314), Vol. 8, No. 2, pp. 309314. 
036 
Davidrajuh, R. (2007) “Exploring Ethical Implications of Personal Relationships in Dyadic Business Exchanges”. Communications of IIMA (ISSN: 15435970), Vol. 7, Issue. 1, pp. 1119. 
035 
Davidrajuh, R. (2007). “Design and Application of Templates in GPenSIM”. 11th Pacific Asia Conference on Information Systems (PACIS 2007), Auckland, New Zealand, 36 July 2007; ISBN: 9780473124342. Publisher: Association for Information Systems. 
034 
Davidrajuh, R. (2007). “Fuzzy logic based model of a new tool for measuring ereadiness”. 1st Asia International Conference on Modelling & Simulation (AMS2007), Asia Modelling Symposium, Phuket, Thailand, 2730 March 2007; Publisher: IEEE Computer Society, IEEE Computer Society Order Number P2845, ISBN13: 9780769528458, ISBN10: 0769528457, pp. 539—545. 
033 
Davidrajuh, R. (2006) “Structures for Stepwise Development of Adaptive Supply Chains”. Journal of Internet Commerce (ISSN: 15332861; Electronic  ISSN: 1533287X), Vol. 5, No. 4, pp. 5572. 
032 
Davidrajuh, R. and Molnar, I. (2006) “A Tool for Teaching Mathematical Modeling to Information Systems Students”. Issues in Information Systems (ISSN 15297314), Vol. 7, No.1, pp. 155160. 
031 
Salimi, F., Dankbaar, B., and Davidrajuh, R. (2006) “A Comprehensive Study on the Differences between MRP and ERP implementation”. Communications of IIMA (ISSN: 15435970), Vol. 6, Issue. 1, pp. 8394. 
030 
Salimi, F., Dankbaar, B., and Davidrajuh, R. (2006) “A Comprehensive Study on the Differences in ERP Implementation between Manufacturing and Service Industry”. Journal of International Technology and Information Management (ISSN 15435962), Vol. 15, Issue 3, pp. 2739. 
029 
Davidrajuh, R. (2006). “Towards measuring true ereadiness of a Thirdworld Country: A Case Study on Sri Lanka”, in GLOBAL EGOVERNMENT: THEORY, APPLICATIONS AND BENCHMARKING, Edited by Latif AlHakim, published by IDEA Group Publishing, Hershey, PA. ISBN: 159904028X, pp. 185199. 
028 
Davidrajuh, R. (2006). “Logic Programming for Machine Tools: A Mathematical Approach”, in International Federation for Information Processing (IFIP), Volume 207, Knowledge Enterprise: Intelligent Strategies in Product Design, Manufacturing, and Management, Eds. Wang, Kovacs, Wozny, and Fang. ISBN: 0387344020. Pp. 717722, Springer, Boston, pp. 717 – 722. 
027 
Davidrajuh, R. Tvedteras, J. E. (2006). ”Fuzzy Approach for Measuring EReadiness”. IEEE International Conference on Intelligent Agents, Web Technologies and Internet Commerce (IAWTIC06) Jointly with International Conference on Computational for Modelling, Control and Automation (CIMCA'2006), Nov 29  Dec 01, Sydney, Australia; IEEE Computer Society Press, IEEE Product No. E2731, ISBN: 0769527310. 
026 
Davidrajuh, R., and Ma, H. M. (2006). “Developing a Modern Distribution Chain: A ThreePronged Approach”, IEEE International Conference on Service Operations and Logistics, and Informatics, 2123, June 2006, Shanghai, China. IEEE Catalog Number: 06EX1352, ISBN: 1424403170, pp. 340345. 
025 
Ifinedo, P. and Davidrajuh, R. (2005). "Digital Divide in Europe: Assessing and comparing the ereadiness of a developed and an emerging economy in the Nordic region", Electronic Government: An International Journal (ISSN: 17407494), vol.2, no.2, 2005. 
024 
Davidrajuh, R. (2005). "Java Bluetooth Wireless Technology for Evaluating Student Performance in Classroom". Communications of the IIMA (ISSN: 15435970), Vol. 5, No. 4, pp. 3338. 
023 
Ma, H. and Davidrajuh, R. (2005). "An iterative approach for distribution chain design in agile virtual environment", Industrial Management and Data Systems (ISSN: 02635577), vol. 105, no. 6, pp. 815834. 
022 
93. Davidrajuh, R. (2005). "Incorporating Domestic Digital Divide in EReadiness Measurement", 2005 International Association of Computer Information Systems – Pacific Conference (IACIS  Pacific 2005), Taipei, Taiwan, May 1921, 2005. 
021 
Davidrajuh, R. (2004). "Planning EGovernment Startup: A Case Study on ESri Lanka", Electronic Government: An International Journal (ISSN: Print 17407494), vol.1, no. 1, pp. 92106. 
020 
Davidrajuh, R. (2004). "A Hybrid Modeling Approach for Supplier Selection in Agile Virtual Environment", Issues in Information Systems (ISSN 15297314), vol. V, no. 2, pp. 427  433, October, 2004. 
019 
Velauthapillai, D. and Davidrajuh, R. (2004). "How EReady is ESri Lanka?” Fourth International Conference on Electronic Business (ICEB2004), Beijing, China, December 59, 2004. 
018 
Davidrajuh, R. (2003). "Modeling and Implementation of Supplier Selection Procedures for eCommerce Initiatives", Industrial Management and Data Systems (ISSN: 02635577), vol. 103, no. 1, pp. 2839. 
017 
Davidrajuh, R. (2003). "Realizing a New ECommerce Tool for Formation of a Virtual Enterprise", Industrial Management and Data Systems (ISSN: 02635577), vol. 103, no. 6, pp. 434445. 
016 
Davidrajuh, R. (2003). “B2B eCommerce for Collaborative Supply Chain Management”, in ELECTRONIC BUSINESS IN SMALL TO MEDIUMSIZED ENTERPRISES (ISBN: 1591402638; Edited by Nabeel AlQirim)", pp. 275290, IDEA Group Publishing. 
015 
Davidrajuh, R. and Hussein, B. (2003). "Modeling Logic Systems with Structured ArrayBased Logic", Modeling, Identification and Control (ISSN: 03327353), vol. 24, no. 1, pp. 2736. 
014 
Davidrajuh, R. (2003). "Eventdriven Simulation, Modeling, and Analysis with GPenSIM", Communications of the IIMA (ISSN: 15435970), vol. 3, no. 2, pp. 5371, 2003. 
013 
Davidrajuh, R. (2003). “A lowcost solution for computersupported collaborative learning in educational environments with limited resources”, 4th Annual Global Information Technology Management (GITM) World Conference, Calgary, Canada, June 0810, 2003. 
012 
Rong, C. and Davidrajuh, R. (2002, October). "A New Decentralized P2P Architecture Providing User Anonymity by Using Secret Sharing", 5th International Conference on ECommerce Research (ICECR5), Montreal, Canada. 
011 
Davidrajuh, R. and Rong, C. (2002). "A Methodology for Tactical Design of Virtual Supply Chain for ETailing", 5th International Conference on ECommerce Research (ICECR5), Montreal, Canada, October 2327, 2002. 
010 
Davidrajuh, R. and Hussein, B. (2001). “Modeling Logic Systems with Structured ArrayBased Logic”, Nordic MATLAB Conference 2001, Oslo, Norway, October 1718, 2001. 
009 
Deng, Z., Pettersen, J., Jensen, E., Bang, B. and Davidrajuh, R. (2000). “Realizing Interenterprise Remotely Synchronous Collaborative Design and Planning within Multiplatform Environment,” 7th ISPE Intl Conference on Concurrent Engineering (CE2000), LyonFrance, July 1720, 2000. 
008 
Davidrajuh, R. and Deng, Z. (2000) “Identifying Potential Suppliers for Formation of Virtual Manufacturing System,” International Conference on Information Technology for Business Management (ITBM'2000), Beijing China, August 2125, 2000. 
007 
Davidrajuh, R. (2000). “Automating Supplier Selection Procedures”. PhD Dissertation, Norwegian University of Science & Technology (NTNU); ISSN: 0809103X; ISBN: 8279841598. 
006 
Davidrajuh, R. (2000). "A Petri Net Approach for Performance Measurement of Supply Chain in Agile Virtual Environment", MIS Review (ISSN: 10181393), vol. 10, no. 2, pp. 103132, 2000. 
005 
Davidrajuh, R. and Deng, Z. (2000). "An Autonomous Data Collection System for Virtual Manufacturing System", International Journal of Agile Management Systems (ISSN: 14654652), vol. 1, no. 2, pp. 715. 
004 
Davidrajuh, R., Deng, Z., and Wang, K. (1999) “Realizing Integrated Intelligent Manufacturing System with Distributed Intelligent Agents,” 15th International Conference on ComputerAided Production Engineering (CAPE'99), Durham UK, April 1921, 1999. 
003 
Deng, Z., Davidrajuh, R., Bang, B., and Lakså, A. (1999) “Multiagent based modeling for interenterprise integration,” International Enterprise Modeling Conference (IEMC'99), Verdal Norway, June 1416, 1999. 
002 
Davidrajuh, R. and Deng, Z. (1998) “Enabling Technologies for Information Flow in Computer Integrated Manufacturing Systems,” 18th AIMTDR Conference, Kharagpur India, December 1012, 1998. 
001 
Davidrajuh, R. (1994). “Light Control System for a MiniTheatre”. MSc Thesis, Norwegian Institute of Technology (NTH), Department of Engineering Cybernetics. 