Stop the war!Остановите войну!
for scientists:
default search action
Google
Google Scholar
Semantic Scholar
Internet Archive Scholar
CiteSeerX
ORCIDDan C. Marinescu
Person information
- affiliation: University of Central Florida, Orlando, USA
Refine list
refinements active!
zoomed in on ?? of ?? records
view refined list in
export refined list as
showing all ?? records
2020 – today
- 2021
[j48]Justin A. Reyes
, Dan C. Marinescu, Eduardo R. Mucciolo:
Simulation of quantum many-body systems on Amazon cloud. Comput. Phys. Commun. 261: 107750 (2021)- [j47]Ryan Florin, Aida Ghazizadeh, Puya Ghazizadeh, Stephan Olariu, Dan C. Marinescu:
Enhancing Reliability and Availability through Redundancy in Vehicular Clouds. IEEE Trans. Cloud Comput. 9(3): 1061-1074 (2021) - 2020
- [j46]Dan C. Marinescu, Stephan Olariu:
Guest Editorial Special Issue on Vehicular Clouds. IEEE Trans. Intell. Transp. Syst. 21(6): 2637-2639 (2020) - [j45]Mohammad Ahmadian, Dan C. Marinescu:
Information Leakage in Cloud Data Warehouses. IEEE Trans. Sustain. Comput. 5(2): 192-203 (2020)
2010 – 2019
- 2019
- [i8]Justin A. Reyes, Eduardo R. Mucciolo, Dan C. Marinescu:
Simulation of Quantum Many-Body Systems on Amazon Cloud. CoRR abs/1908.08553 (2019) - 2018
- [j44]George A. Gravvanis, John P. Morrison, Dan C. Marinescu, Christos K. Filelis-Papadopoulos:
Special section: towards high performance computing in the cloud. J. Supercomput. 74(2): 527-529 (2018) - 2017
- [j43]Dan C. Marinescu, Ashkan Paya, John P. Morrison, Stephan Olariu:
An approach for scaling cloud resource management. Clust. Comput. 20(1): 909-924 (2017) - [j42]Mohammad Ahmadian, Frank Plochan, Zak Roessler, Dan C. Marinescu:
SecureNoSQL: An approach for secure search of encrypted NoSQL databases in the public cloud. Int. J. Inf. Manag. 37(2): 63-74 (2017) - [j41]Ashkan Paya, Dan C. Marinescu:
Energy-Aware Load Balancing and Application Scaling for the Cloud Ecosystem. IEEE Trans. Cloud Comput. 5(1): 15-27 (2017) - [j40]Dan C. Marinescu, Ashkan Paya, John P. Morrison:
A Cloud Reservation System for Big Data Applications. IEEE Trans. Parallel Distributed Syst. 28(3): 606-618 (2017) - [c87]Huanhuan Xiong, Dapeng Dong, Christos K. Filelis-Papadopoulos, Gabriel G. Castañé, Theo Lynn, Dan C. Marinescu, John P. Morrison:
CloudLightning: a Self-Organized Self-Managed Heterogeneous Cloud. FedCSIS 2017: 749-758 - 2015
- [c86]Dan C. Marinescu, John P. Morrison, Ashkan Paya:
Is Cloud Self-organization Feasible? ARMS-CC@PODC 2015: 119-127 - [i7]Dan C. Marinescu, Ashkan Paya, John P. Morrison, Philip D. Healy:
Distributed Hierarchical Control versus an Economic Model for Cloud Resource Management. CoRR abs/1503.01061 (2015) - 2014
- [j39]Shameek Bhattacharjee, Dan C. Marinescu:
A cloud service for trust management in cognitive radio networks. Int. J. Cloud Comput. 3(4): 326-353 (2014) - [c85]Ashkan Paya, Dan C. Marinescu:
Energy-Aware Load Balancing Policies for the Cloud Ecosystem. IPDPS Workshops 2014: 823-832 - [c84]Ashkan Paya, Dan C. Marinescu:
Cloud-Based Simulation of a Smart Power Grid. IPDPS Workshops 2014: 875-884 - [c83]Mohammad Ahmadian, Ashkan Paya, Dan C. Marinescu:
Security of Applications Involving Multiple Organizations and Order Preserving Encryption in Hybrid Cloud Environments. IPDPS Workshops 2014: 894-903 - [c82]Dan C. Marinescu:
Parallel and Distributed Computing: Memories of Time Past and a Glimpse at the Future. ISPDC 2014: 14-15 - [c81]Philip D. Healy, Stefan Meyer, John P. Morrison, Theo Lynn, Ashkan Paya, Dan C. Marinescu:
Bid-Centric Cloud Service Provisioning. ISPDC 2014: 73-81 - [i6]Ashkan Paya, Dan C. Marinescu:
Energy-aware Load Balancing Policies for the Cloud Ecosystem. CoRR abs/1401.2198 (2014) - [i5]Dan C. Marinescu, Ashkan Paya, John P. Morrison:
Coalition Formation and Combinatorial Auctions; Applications to Self-organization and Self-management in Utility Computing. CoRR abs/1406.7487 (2014) - 2013
- [j38]Dan C. Marinescu:
High-Probability Trajectories in the Phase Space and the System Complexity. Complex Syst. 22(3) (2013) - [c80]Jan Curn, Dan C. Marinescu, Niall O'Hara, Vinny Cahill:
Data incest in cooperative localisation with the Common Past-Invariant Ensemble Kalman filter. FUSION 2013: 68-76 - [i4]Ashkan Paya, Dan C. Marinescu:
Clustering Algorithms for Scale-free Networks and Applications to Cloud Resource Management. CoRR abs/1305.3031 (2013) - [i3]Ashkan Paya, Dan C. Marinescu:
Energy-aware Application Scaling on a Cloud. CoRR abs/1307.3306 (2013) - [i2]Dan C. Marinescu, Ashkan Paya, John P. Morrison, Philip D. Healy:
An Auction-driven Self-organizing Cloud Delivery Model. CoRR abs/1312.2998 (2013) - [i1]Philip D. Healy, Stefan Meyer, John P. Morrison, Theo Lynn, Ashkan Paya, Dan C. Marinescu:
Bid-Centric Cloud Service Provisioning. CoRR abs/1312.4853 (2013) - 2012
- [c79]Dan C. Marinescu, Jan Curn, Mélanie Bouroche, Vinny Cahill:
On-ramp traffic merging using cooperative intelligent vehicles: A slot-based approach. ITSC 2012: 900-906 - [c78]Jan Curn, Dan C. Marinescu, Gerard Lacey, Vinny Cahill:
Estimation with non-white Gaussian observation noise using a generalised ENSEMBLE KALMAN filter. ROSE 2012: 85-90 - [c77]Ashkan Paya, Dan C. Marinescu:
A Cloud Service for Adaptive Digital Music Streaming. SITIS 2012: 910-917 - 2010
- [j37]Chen Yu, Dan C. Marinescu:
Algorithms for Divisible Load Scheduling of Data-intensive Applications. J. Grid Comput. 8(1): 133-155 (2010) - [j36]Dan C. Marinescu, Chen Yu, Gabriela M. Marinescu:
Scale-free, self-organizing very large sensor networks. J. Parallel Distributed Comput. 70(5): 612-622 (2010) - [c76]Dan C. Marinescu, Jan Curn, Marco Slot, Mélanie Bouroche, Vinny Cahill:
An active approach to guaranteed arrival times based on traffic shaping. ITSC 2010: 1711-1717
2000 – 2009
- 2009
- [j35]Guoqiang Wang, Ladislau Bölöni, Damla Turgut, Dan C. Marinescu:
Time-parallel simulation of wireless ad hoc networks with compressed history. J. Parallel Distributed Comput. 69(2): 168-179 (2009) - [j34]Guoqiang Wang, Damla Turgut, Ladislau Bölöni, Dan C. Marinescu:
Time-parallel simulation of wireless ad hoc networks. Wirel. Networks 15(4): 463-480 (2009) - [c75]Dan C. Marinescu, Chen Yu, Gabriela M. Marinescu:
Self-organization of Very Large Sensor Networks Based on Small-worlds Principles. SASO 2009: 115-125 - 2008
- [j33]Guoqiang Wang, Damla Turgut, Ladislau Bölöni, Yongchang Ji, Dan C. Marinescu:
A MAC layer protocol for wireless networks with asymmetric links. Ad Hoc Networks 6(3): 424-440 (2008) - [j32]Xin Bai, Dan C. Marinescu, Ladislau Bölöni, Howard Jay Siegel, Rose A. Daley, I-Jeng Wang:
A macroeconomic model for resource allocation in large-scale distributed systems. J. Parallel Distributed Comput. 68(2): 182-199 (2008) - [j31]Guoqiang Wang, Damla Turgut, Ladislau Bölöni, Yongchang Ji, Dan C. Marinescu:
Improving routing performance through m. J. Parallel Distributed Comput. 68(4): 501-514 (2008) - [c74]Chen Yu, Dan C. Marinescu:
Load Distribution and Co-termination Scheduling Algorithms for Large-Scale Distributed Applications. PDCCS 2008: 117-122 - [c73]Christoffer Norvik, John P. Morrison, Dan C. Marinescu, Chen Yu, Gabriela M. Marinescu, Howard Jay Siegel:
Managing Contracts in Pleiades Using Trust Management. ATC 2008: 470-480 - [c72]Dan C. Marinescu, Chen Yu, Gabriela M. Marinescu, John P. Morrison, Christoffer Norvik:
A reputation algorithm for a self-organizing system based upon resource virtualization. IPDPS 2008: 1-6 - [c71]Dan C. Marinescu, Gabriela M. Marinescu, Chen Yu:
Self-organizing sensor networks. ISWPC 2008: 288-292 - [c70]Guoqiang Wang, Dan C. Marinescu:
Cross-layer information sharing for wireless networks with asymmetric links. ISWPC 2008: 475-479 - [c69]Dan C. Marinescu, Gabriela M. Marinescu:
A Parallel Simulator for Quantum Fault Tolerance in the Presence of Correlated Errors. PADS 2008: 152 - [c68]Dan C. Marinescu, Chen Yu, Gabriela M. Marinescu:
A Secure Self-Organizing Sensor Network. SASO Workshops 2008: 114-119 - [c67]Dan C. Marinescu, John P. Morrison, Chen Yu, Christoffer Norvik, Howard Jay Siegel:
A Self-Organization Model for Complex Computing and Communication Systems. SASO 2008: 149-158 - 2007
- [j30]Dan C. Marinescu, Gabriela M. Marinescu:
The Boole Lecture Quantum Information: A Glimpse at the Strange and Intriguing Future of Information. Comput. J. 50(5): 505-521 (2007) - [j29]Feng Lu, Dan C. Marinescu:
An R || C max Quantum Scheduling Algorithm. Quantum Inf. Process. 6(3): 159-178 (2007) - [j28]Feng Lu, Dan C. Marinescu:
Quantum Error Correction of Time-correlated Errors. Quantum Inf. Process. 6(4): 273-293 (2007) - [c66]Chen Yu, Dan C. Marinescu, Howard Jay Siegel, John P. Morrison:
A Simulation Study of Data Partitioning Algorithms for Multiple Clusters. CCGRID 2007: 259-266 - [c65]Chen Yu, Dan C. Marinescu, John P. Morrison, Brian C. Clayton, David A. Power:
An Automated Data Processing Pipeline for Virus Structure Determination at High Resolution. IPDPS 2007: 1-8 - 2006
- [j27]Ladislau Bölöni, Damla Turgut, Dan C. Marinescu:
Task distribution with a random overlay network. Future Gener. Comput. Syst. 22(6): 676-687 (2006) - [j26]Yongchang Ji, Dan C. Marinescu:
Rotational and translational alignment errors in 3D reconstruction of virus structures at high resolution. Int. J. Bioinform. Res. Appl. 2(4): 359-370 (2006) - [c64]Damla Turgut, Guoqiang Wang, Ladislau Bölöni, Dan C. Marinescu:
Speedup-Precision Tradeoffs in Time-Parallel Simulation of Wireless Ad hoc Networks. DS-RT 2006: 265-268 - [c63]Xin Bai, Ladislau Bölöni, Dan C. Marinescu, Howard Jay Siegel, Rose A. Daley, I-Jeng Wang:
A brokering framework for large-scale heterogeneous systems. IPDPS 2006 - [c62]Han Yu, Dan C. Marinescu, Annie S. Wu, Howard Jay Siegel, Rose A. Daley, I-Jeng Wang:
Plan switching: an approach to plan execution in changing environments. IPDPS 2006 - [c61]Guoqiang Wang, Damla Turgut, Ladislau Bölöni, Yongchang Ji, Dan C. Marinescu:
A simulation study of a MAC layer protocol for wireless networks with asymmetric links. IWCMC 2006: 929-936 - [c60]Guoqiang Wang, Damla Turgut, Ladislau Bölöni, Dan C. Marinescu:
Accuracy-Speedup Tradeoffs for a Time-Parallel Simulation of Wireless Ad hoc Networks. LCN 2006: 730-737 - [c59]Ladislau Bölöni, Damla Turgut, Guoqiang Wang, Dan C. Marinescu:
Challenges and benefits of time-parallel simulation of wireless ad hoc networks. VALUETOOLS 2006: 31 - [p2]Xin Bai, Han Yu, Guoqiang Wang, Yongchang Ji, Gabriela M. Marinescu, Dan C. Marinescu, Ladislau Bölöni:
Intelligent Grids. Grid Computing: Software Environments and Tools 2006: 45-74 - [p1]Srinivas Aluru, Nancy M. Amato, David A. Bader, Suchindra Bhandarkar, Laxmikant V. Kalé, Dan C. Marinescu:
Parallel Computational Biology. Parallel Processing for Scientific Computing 2006: 357-378 - 2005
- [j25]Dan C. Marinescu:
Special Issue: Third IEEE International Workshop on High Performance Computational Biology (HiCOMB 2004). Concurr. Comput. Pract. Exp. 17(14): 1625-1626 (2005) - [j24]Ferucio Laurentiu Tiplea, Dan C. Marinescu:
Structural soundness of workflow nets is decidable. Inf. Process. Lett. 96(2): 54-58 (2005) - [j23]Han Yu, Xin Bai, Dan C. Marinescu:
Workflow management and resource discovery for an intelligent grid. Parallel Comput. 31(7): 797-811 (2005) - [j22]Xin Bai, Han Yu, Guoqiang Wang, Yongchang Ji, Gabriela M. Marinescu, Dan C. Marinescu, Ladislau Bölöni:
Coordination in Intelligent Grid Environments. Proc. IEEE 93(3): 613-630 (2005) - [c58]Ladislau Bölöni, Damla Turgut, Dan C. Marinescu:
n-Cycle: a set of algorithms for task distribution on a commodity grid. CCGRID 2005: 615-622 - [c57]Ladislau Bölöni, Damla Turgut, Taskin Koçak, Yongchang Ji, Dan C. Marinescu:
Rapid Distribution of Tasks on a Commodity Grid. EGC 2005: 721-730 - [c56]Yongchang Ji, Dan C. Marinescu:
Rotational and Translational Alignment Errors in 3D Reconstruction of Virus Structures at High Resolution. ICPADS (2) 2005: 321-325 - [c55]Dan C. Marinescu:
The Promise of Quantum Computing and Quantum Information Theory - Quantum Parallelism. IPDPS 2005 - [c54]Dan C. Marinescu, Gabriela M. Marinescu:
Quantum States and Quantum Measurements. VISSAS 2005: 101-126 - 2004
- [b1]Dan C. Marinescu, Gabriela M. Marinescu:
Approaching Quantum Computing. Pearson 2004, ISBN 978-0-13-145224-4, pp. I-XIV, 1-386 - [c53]Dan C. Marinescu:
Quantum parallelism and the exact simulation of physical systems. Conf. Computing Frontiers 2004: 1 - [c52]Xin Bai, Han Yu, Yongchang Ji, Dan C. Marinescu:
Resource Matching and a Matchmaking Service for an Intelligent Grid. International Conference on Computational Intelligence 2004: 262-265 - [c51]Han Yu, Xin Bai, Guoqiang Wang, Yongchang Ji, Dan C. Marinescu:
Metainformation and Workflow Management for Solving Complex Problems in Grid Environment. IPDPS 2004 - [c50]Han Yu, Dan C. Marinescu, Annie S. Wu, Howard Jay Siegel:
Planning with Recursive Subgoals. KES 2004: 17-27 - [c49]Guoqiang Wang, Yongchang Ji, Dan C. Marinescu, Damla Turgut:
A routing protocol for power constrained networks with asymmetric links. PE-WASUN 2004: 69-76 - [c48]Vivek Singh, Yongchang Ji, Dan C. Marinescu:
A Parallel Algorithm for Automatic Particle Identification in Electron Micrographs. VECPAR 2004: 354-367 - 2003
- [j21]Dan C. Marinescu, Yongchang Ji:
A computational framework for the 3D structure determination of viruses with unknown symmetry. J. Parallel Distributed Comput. 63(7-8): 738-758 (2003) - [j20]Chuang Lin, Mingwei Xu, Dan C. Marinescu, Fengyuan Ren, Zhiguang Shan:
A sufficient condition for instability of buffer priority policies in re-entrant lines. IEEE Trans. Autom. Control. 48(7): 1235-1238 (2003) - [c47]Robert E. Lynch, Yongchang Ji, Dan C. Marinescu, Hong Lin:
A Parallel 3D Piecewise Constant Reconstruction Algorithm for Asymmetric Virus Structures. International Conference on Computational Science 2003: 437-446 - [c46]Dan C. Marinescu, Gabriela M. Marinescu, Yongchang Ji, Ladislau Bölöni, Howard Jay Siegel:
Ad hoc grids: communication and computing in a power constrained environment. IPCCC 2003: 113-122 - [c45]Yongchang Ji, Dan C. Marinescu, Wei Zhang, Timothy S. Baker:
Orientation Refinement of Virus Structures with Unknown Symmetry. IPDPS 2003: 49 - [c44]Han Yu, Dan C. Marinescu, Annie S. Wu, Howard Jay Siegel:
A Genetic Approach to Planning in Heterogeneous Computing Environments. IPDPS 2003: 97 - [c43]Ladislau Bölöni, Majid Ali Khan, Xin Bai, Guoqiang Wang, Yongchang Ji, Dan C. Marinescu:
Software Engineering Challenges for Mutable Agent Systems. SELMAS 2003: 149-166 - 2002
- [j19]Zhiguang Shan, Chuang Lin, Dan C. Marinescu, Yang Yang:
Modeling and performance analysis of QoS-aware load balancing of Web-server clusters. Comput. Networks 40(2): 235-256 (2002) - [j18]Dan C. Marinescu, Yongchang Ji, Gabriela M. Marinescu:
Cluster and Grid Computing for Solving Large Structural Biology Problems. Sci. Ann. Cuza Univ. 11: 11-45 (2002) - [c42]Chuang Lin, Yang Qu II, Fengyuan Ren, Dan C. Marinescu:
Performance Equivalent Analysis of Workflow Systems Based on Stochastic Petri Net Models. EDCIS 2002: 64-79 - [c41]Dan C. Marinescu, Yongchang Ji, Gabriela M. Marinescu:
Genetic Economy, Symmetry, and Computational Complexity for Atomic Virus Structure Determination. IPDPS 2002 - [c40]Chuang Lin, Dan C. Marinescu, Yongchang Ji, Gabriela M. Marinescu:
On synthetic criteria for evaluation of network traffic control policies. ISCC 2002: 63-68 - [c39]Kyungkoo Jun, Dan C. Marinescu, Yongchang Ji, Gabriela M. Marinescu:
Scalable Benchmarking and Performance Monitoring: a Coordination and Mobility Perspective. NETWORKING Workshops 2002: 158-164 - 2001
- [j17]Dan C. Marinescu, Yongchang Ji, Robert E. Lynch:
Space-time tradeoffs for parallel 3D reconstruction algorithms for virus-structure determination. Concurr. Comput. Pract. Exp. 13(12): 1083-1106 (2001) - [j16]Dan C. Marinescu, Ladislau Bölöni:
Biological metaphors in the design of complex software systems. Future Gener. Comput. Syst. 17(4): 345-360 (2001) - [c38]Dan C. Marinescu:
Reflections on Qualitative Attributes of Mobile Agents for Computational, Data, and Service Grids. CCGRID 2001: 442-449 - [c37]Dan C. Marinescu, Yongchang Ji, Robert E. Lynch:
A Comparison of Three Parallel Algorithms for 3D Reconstruction. HPCN Europe 2001: 173-182 - [c36]Chuang Lin, Mingwei Xu, Dan C. Marinescu:
A Petri net approach to stability analysis of buffer priority scheduling policies in manufacturing systems. SMC 2001: 1811-1816 - 2000
- [j15]Ladislau Bölöni, Dan C. Marinescu, John R. Rice, Panagiota E. Tsompanopoulou, Emmanuel A. Vavalis:
Agent based scientific simulation and modeling. Concurr. Pract. Exp. 12(9): 845-861 (2000) - [c35]Ladislau Bölöni, Dan C. Marinescu:
A multi-plane state machine agent model. Agents 2000: 80-81 - [c34]Robert E. Lynch, Hong Lin, Dan C. Marinescu:
An Efficient Algorithm for Parallel 3D Reconstruction of Asymmetric Objects from Electron Micrographs. Euro-Par 2000: 481-490 - [c33]Kyungkoo Jun, Ladislau Bölöni, Krzysztof Palacz, Dan C. Marinescu:
Agent-Based Resource Discovery. Heterogeneous Computing Workshop 2000: 43-52 - [c32]Ladislau Bölöni, Dan C. Marinescu:
Agent Surgery: The Case for Mutable Agents. IPDPS Workshops 2000: 578-585 - [c31]Kyungkoo Jun, Ladislau Bölöni, David K. Y. Yau, Dan C. Marinescu:
Intelligent QoS support for an adaptive video service. IRMA Conference 2000: 1096-1098 - [c30]Ladislau Bölöni, Kyungkoo Jun, Krzysztof Palacz, Radu Sion, Dan C. Marinescu:
The Bond Agent System and Applications. ASA/MA 2000: 99-112
1990 – 1999
- 1999
- [c29]Bernd Mohr, Federico Bassetti, Kei Davis, Stefan Hüttemann, Pascale Launay, Dan C. Marinescu, David J. Miller, Ruthe L. Vandewart, Matthias S. Müller, Augustin Prodan:
Parallel / High-Performance Object-Oriented Scientific Computing. ECOOP Workshops 1999: 222-239 - [c28]Dan C. Marinescu:
An Agent-Based Design for Problem Solving Environments. ECOOP Workshops 1999: 228-230 - [c27]Ladislau Bölöni, Dan C. Marinescu:
On the Robustness of Metaprogram Schedules. Heterogeneous Computing Workshop 1999: 146-155 - [c26]Ladislau Bölöni, Ruibing Hao, Kyungkoo Jun, Dan C. Marinescu:
Structural Biology Metaphors Applied to the Design of a Distributed Object System. IPPS/SPDP Workshops 1999: 275-283 - [c25]Robert E. Lynch, Dan C. Marinescu, Hong Lin, Timothy S. Baker:
Parallel Algorithms for 3D Reconstruction of Asymmetric Objects from Electron Micrographs. IPPS/SPDP 1999: 632-637 - [c24]Ruibing Hao, Ladislau Bölöni, Kyungkoo Jun, Dan C. Marinescu:
An Aspect-Oriented Approach to Distributed Object Security. ISCC 1999: 23-30 - 1997
- [c23]Mihai G. Sirbu, Dan C. Marinescu:
A scheduling expert advisor for heterogeneous environments. Heterogeneous Computing Workshop 1997: 74-82 - [c22]Dan C. Marinescu, Kuei Yu Wang:
Empirical Studies of Paging and I/O Activity of Parallel Programs. MASCOTS 1997: 177-183 - [c21]Ioana M. Boier-Martin, Dan C. Marinescu:
A Visualization Environment for Electron Microscopy. PG 1997: 191-197 - 1996
- [c20]Ioana M. Boier-Martin, Dan C. Marinescu:
Exploiting Symmetry in Parallel Computations for Structural Biology. Euro-Par, Vol. II 1996: 255-258 - [c19]Mihai G. Sirbu, Dan C. Marinescu:
Bond - A Parallel Virtual Environment. HPCN Europe 1996: 722-728 - 1995
- [c18]Kuei Yu Wang, Dan C. Marinescu:
Correlation of the paging activity of individual node programs in the SPMD execution mode. HICSS (1) 1995: 61-73 - [c17]Calin R. Costian, Dan C. Marinescu:
Socrates: an environment for high performance computing. WETICE 1995: 199-206 - 1994
- [j14]Marius A. Cornea-Hasegan, Dan C. Marinescu, Zhongyun Zhang:
Data management for a class of iterative computations on distributed-memory MIMD systems. Concurr. Pract. Exp. 6(3): 205-229 (1994) - [j13]