A brief description of our  work by area as well as related publications are provided. Most of the papers  are available through the IEEE, ACM, etc, journal and conference databases. We  will be happy to send a paper per your request as well. 
      1. Wireless  communications  
    1.1 Resource allocation in wireless  ad-hoc networks: capacity issues time-varying topologies and maximum throughput  algorithms
    1.2 Wireless ad-hoc networks: protocols,  topology control and service discovery
    1.3 Wireless ad-hoc networks: Quality of  Service provisioning
    1.4 Smart antennas in wireless  communication networks
    1.5 Broadband wireless networks:  cross-layer design approaches
    1.6 Wireless cellular networks:  architectures, resource allocation and quality of service
    1.7 Mobility tracking in cellular  wireless networks 
    2. Sensor networks and energy  conservation 
    3.  Architectures protocols and service models in the INTERNET  
    3.1 Congestion control and Quality of  Service provisioning in the INTERNET
    3.2 High speed switching: architectures  algorithms and performance
    3.3 Ring Networks: architectures control  and management
    3.4 Multicasting: architectures, routing  and congestion control
    3.5 Information delivery in the internet  by broadcasting methods 
    4. Performance based network management  tools 
    5. Satellite  Communications  
    5.1 Mobile satellite communication  networks
    5.2 Communication systems for  air-traffic control 
      6. Vehicle routing techniques in  transportation problems 
1.1  Resource allocation in wireless ad-hoc networks: capacity issues time-varying  topologies and maximum throughput algorithms  
    A model that captures the  local interaction of wireless links and its impact on access control and  routing has been introduced [ 1.1.1, 1.1.2, 1.1.13]. It is general enough to  have under its scope arbitrary topology networks, with end-to-end routing and a  wide variety of signaling methods. In addition to wireless systems the model  has within its scope other systems with interdependent service like input  queueing switches and databases with locking. The notion of network throughput  region is introduced to represent capacity. Maximum throughput network control  policies are presented. These policies are of high complexity in general and  often NP-hard. In [ 1.1.4] we find scheduling policies that minimize delay in  networks with specialized topologies. In [1.1.8, 1.1.12] a linear complexity  policy that achieves maximum throughput in the general model is presented. In  [1.1.1, 1.1.3, 1.1.14 ] a model for the time varying wireless channel due to  fading and mobility is introduced. The impact to the access layer is analyzed  and access control policies that optimize throughput and delay in view of  channel variability in a single hop system are provided. In [ 1.1.5 , 1.1.11]  the maximum throughput policies in a general topology time varying network are  provided. The time variability statistics are generalized as well to included  the case of correlated losses. In [1.1.6] a generalization of the model in  [1.1.2] is considered to include the cases of asynchronous service times and  correlation among the users. Optimal policies are obtained in the generalized  model as well. In [1.1.9 ] the asymptotic capacity in a hybrid network  involving ad-hoc components and an infrastructure network has been evaluated. 
    1.1.1. L. Tassiulas, "Dynamic  link activation scheduling in multihop radio networks with fixed or changing  topology" Doctoral Dissertation, University of Maryland , College  Park , 1991.
    1.1.2. L. Tassiulas, A. Ephremides, "Stability  properties of constrained queueing systems and scheduling policies for  maximum throughput in multihop radio networks,"  IEEE  Transactions on Automatic Control, Vol. 37, No. 12, pp. 1936-1949,  December 1992.  
    1.1.3. L. Tassiulas, A. Ephremides, "Dynamic server  allocation to parallel queues with randomly varying  connectivity,"  IEEE Transactions on Information Theor y, Vol.  39, No. 2, pp. 466-478, March 1993.
    1.1.4. L. Tassiulas, A. Ephremides, "Dynamic  scheduling for minimum delay in tandem and parallel constrained queueing  models,"  Annals of Operation Research , Vol. 48, pp.  333-355, 1993.
    1.1.5. L. Tassiulas, "Scheduling and performance  limits of networks with constantly changing topology,''  IEEE  Transactions on Information Theory , Vol. 43, No. 3, pp. 1067-1073,  May 1997.
    1.1.6. L. Tassiulas, P. Bhattacharya, "Allocation of  interdependent resources for maximum throughput,'' Stochastic Models ,  Vol 16, Issue Nr 1, pp$$ 2000.
    1.1.7. L. Tassiulas, S. Papavassiliou, "Optimal  anticipative scheduling with asynchronous transmission  opportunities,''  IEEE Transactions on Automatic Control, Vol.  40, No. 12, pp. 2052-2062, December 1995.
    1.1.8. L. Tassiulas, "Linear complexity algorithms for  maximum throughput in radio networks and input queuing switches",  Proceedings of INFOCOM98, San Francisco, California, 1998.
    1.1.9. Ulas Kozat, Leandros Tassiulas " Throughput  Capacity of Random Ad Hoc Networks with Infrastructure Support,"  Proceedings of MOBICOM03, Atlanta  , GA 2003. .
      1.1.10. L. Tassiulas, A. Ephremides, "Comparison of  transmission strategies in CSMA/CD multi-access systems," Proceedings of  the twenty-fifth Annual Conference on Information Sciences and Systems, pp.  952, Baltimore  , 1991.
    1.1.11. L. Tassiulas, "The throughput region of networks  with time-varying topology," Proceedings of the Information Theory  Symposium, pp. 221, San Antonio, Texas, 1993.
    1.1.12. L. Tassiulas, "Low complexity randomized policies  for maximum throughput in systems with concurrency constraints," (invited)  Proceedings of the 32nd Annual Allerton Conference on Communication, Control  and Computing, pp. 392-395, Urbana   , Illinois , 1994.
    1.1.13. L. Tassiulas, A. Ephremides, "Stability  properties of constrained queuing systems and scheduling policies for maximum  throughput in multihop radio networks," Proceedings of the 29th CDC, Honolulu , Hawaii  , 1990.
    1.1.14. L. Tassiulas, A. Ephremides, "Allocation of a  single server to a set of parallel queues with time dependent demands,"  Proceedings of the Information Theory Symposium, pp. 208, Budapest , 1991. 
1.2  Wireless ad-hoc networks: protocols, topology control and service discovery  
      1.2.1. L. Tassiulas, A.  Ephremides, "Jointly optimal routing and scheduling in packet  radio networks ,"  IEEE Transactions on Information Theory, Vol.  38, No. 1, pp. 165-168, January 1992.
      1.2.2. T. Salonidis, P. Bahgwat, L. Tassiulas, R. Lamaire  " Distributed topology construction of bluetooth personal area networks  ," Proceedings of IEEE INFOCOM01, Anchorage   , Alaska April 2001.
      1.2.3. N. Johansson, U. Korner, L. Tassiulas, "A  distributed s cheduling algorithm for a bluetooth scatternet ,"  Proceedings of International Teletraffic Congress 2001. 
      1.2.4.Ulas Kozat, Leandros Tassiulas "Network Layer  Support for Service Discovery in Mobile Ad Hoc  Networks ," Proceedings of IEEE INFOCOM03, San Francisco 2003.
      1.2.5.Koushik Kar, Saswati Sarkar, Leandros Tassiulas,  "Achieving Proportional Fairness using Local Information in Multihop Aloha  Networks'' Proceedings of 41st Annual Allerton Conference on Communication,  Control and Computing, Allerton , Monticello , Illinois , October 1-3, 2003 
      1.2.6.S. Chari, P. Kermani, S.W. Smith, L. Tassiulas  "Security Issues in M-Commerce: A Usage-Based Taxonomy." Advances in  E-Commerce Agents: Broking, Negotiation, Security and Mobility. Lecture Notes  in Computer Science, LNAI 2033, pp 264-282, Springer-Verlag, 2001. 
      1.2.7.V. Tabatabaee, L. Tassiulas, "Optimal distributed  routing in networks with randomly varying connectivity," Proceedings of  the 34th Annual Allerton Conference on Communications, Control and Computing, Urbana , Illinois  , 1996.
      1.2.8. L. Tassiulas, A. Ephremides, J. Gunn, "Solving  hard optimization problems arising in packet radio networks using Hopfield's  net," Proceedings of the 23rd Annual Conference on Information Sciences  and Systems, pp. 603-608, John Hopkins Univ., Baltimore MD, 1989. 
      1.2.9. L. Tassiulas, A. Ephremides, " Joint Routing and  Scheduling in Multihop Packet Radio Networks," Proceedings of the 1st  Bilkent Conference on Communications and Information Processing, Ankara , Turkey  , 1989.
      1.2.10. L. Tassiulas, A. Ephremides, " The effect of the  transmission range on the throughput of a multihop radio network," in the  Proceedings of the 25th Annual Conference on Information Sciences and Systems,  pp. 718, Baltimore , 1991. Theodoros Salonidis Masters Thesis, University of Maryland  College Park ,  1999 
         
      1.3  Wireless ad-hoc networks: Quality of Service provisioning  
    In [1.3.2, 1.3.5] we  present a methodology for providing QoS in wireless networks, that deals  effectively with the main peculiarity of wireless networks, that differentiates  them from their wireline counterparts, namely coordination of transmissions of  neighboring interfering links. A distributed algorithm that does virtual  bandwidth allocation to the different flows based on a token mechanism is  provided. The algorithm is proven to be optimal, providing maxmin fair  bandwidth allocation. In [1.3.4] end-to-end QoS provisioning is considered and  a related algorithm that works in the multi-hop setting is provided. In [1.3.3,  1.3.6] a similar question of QoS provisioning has been investigated in a more  general operating regime where the traffic is not pre-regulated and the  scheduler may need to perform in conditions of overloading. In [1.3.1] we  develop a technique for analyzing the performance of TCP sessions over wireless  links with correlated losses and subsequently we use the technique to compare  different TCP versions. 
    1.3.1. F. Anjum, L. Tassiulas , " Comparative study of various TCP versions over a wireless link with  correlated losses ," IEEE/ACM Transactions on Networking , Vol.11  Is: 3 pp. 370 -383 June 2003.
    1.3.2. L. Tassiulas, S. Sarkar , "Maxmin fair scheduling  in wireless networks," Proceedings of IEEE INFOCOM02, NY,NY 2002.
    1.3.3. Vagelis Tsibonis, Leonidas Georgiadis, Leandros  Tassiulas "Exploiting Wireless   Channel State  Information for Throughput Maximization" Proceedings of IEEE INFOCOM03,  San Francisco 2003 .
    1.3.4. Saswati Sarkar, Leandros Tassiulas, "End-to-end  bandwidth guarantees through fair local spectrum share in wireless ad-hoc  networks,'' Proceedings of Conference on Decision and Control (CDC), 2003, Maui  , Hawaii , December 9-12, 2003
    1.3.5. S. Sarkar, L. Tassiulas, "Maxmin Fair Scheduling  in Wireless Adhoc Networks," submitted to IEEE Journal on Selected Areas  in Communications 2003.
    1.3.6. Vagelis Tsibonis, Leonidas Georgiadis, Leandros  Tassiulas " Exploiting Wireless Channel State Information for Throughput  Maximization " submitted to IEEE Transactions on Information Theory 2003.
    1.4  Smart antennas in wireless communication networks  
    1.4.1. J.H. Chang, L. Tassiulas, F.-R.  Farrokhi, "Beamforming for maximum capacity in wireless networks with  transmitter and receiver antenna arrays," IEEE Transactions on  Wireless Communications, vol.1, no.1, pp 16-27, Jan. 2002. 
    1.4.2. F. Farrokhi,, L. Tassiulas, K.J.R. Liu, "Joint  optimal power control and beamforming in wireless networks using antenna  arrays,'' IEEE Transactions On Communications, pp.1313-1324, Vol 46,  No. 10, Oct . 1998.
    1.4.3. F. Farrokhi, K.J.R. Liu, L. Tassiulas, "Transmit  beamforming and power control for cellular wireless systems," IEEE  Journal on Selected Areas in Communications, Special issue on signal  processing in wireless communications, Vol. 16, No. 8, pp. 1437-1450, 1998.
    1.4.4. L. Tassiulas, "Null placement configurations for  radio network capacity enhancement," Proceedings of the 8th IEEE Workshop  on Statistical Signal and Array Processing, Corfu, Greece, June 1996.
    1.4.5. F. Rashid-Farrokhi, L. Tassiulas, "Power control  and space-time diversity for CDMA systems," Proceedings of IEEE  GLOBECOM-98, November 1998. 
    1.4.6. A. Korakis, G, Yaklari, Leandros Tassiulas " A MAC  protocol for full exploitation of Directional Antennas in Ad-hoc Wireless  Networks," Proceedings of MobiHoc03, Annapolis   , MD 2003.
    1.4.7. Tianmin Ren, R. La, L. Tassiulas, " Optimal  transmission scheduling with base station antenna array in cellular  networks" Proceedings of IEEE INFOCOM04, Hong Kong 2004.
    1.4.8. I. Koutsopoulos,  Tianmin Ren L. Tassiulas, " The Impact of Space Division Multiplexing on  Resource Allocation: A Unified Approach " Proceedings of IEEE INFOCOM03,  San Francisco 2003.
    1.4.9. Farrokh-Rashid Farrokhi, Combined Power Control and  Space Time Diversity in Cellular Communications, Doctoral Dissertation,  University of Maryland  , College Park 1997
    1.4.10. Jae-Hwan Chang Adaptive beamforming and energy  efficient routing in wireless networks, Doctoral Dissertation, University of Maryland , College Park 2003. 
       
    1.5  Broadband wireless networks: cross-layer design approaches  
    1.5.1. I. Koutsopoulos, L. Tassiulas,  " Channel state-adaptive techniques for throughput enhancement in wireless  broadband networks ," Proceedings of IEEE INFOCOM01, Anchorage , Alaska  April 2001. 
    1.5.2. I. Koutsopoulos, L. Tassiulas, " Adaptive Resource  Allocation in SDMA- based Wireless Broadband Networks with OFDM  Signaling," Proceedings of IEEE INFOCOM02, NY,NY 2002.
    1.5.3. I. Koutsopoulos and L. Tassiulas, "Towards  efficient Resource Allocation in Wireless Broadband networks using Adaptive  Modulation techniques", Proceedings of ICC 2001.
    1.5.4. U. Kozat I. Koutsopoulos, L. Tassiulas, " Dynamic  Code Assignment and Spreading Gain Adaptation in Synchronous CDMA Wireless  Networks ," Proceedings of International Symposium of Spread Spectrum  Theory and Applications (ISSSTA), Prague  , 2002.
    1.5.5. U. Kozat, J. Koutsopoulos, L. Tassiulas, " A  Framework for Cross-layer Design of Energy-efficient Communication with QoS  Provisioning in Multi-hop Wireless Networks", roceedings of IEEE  INFOCOM04, Hong Kong 2004 
    1.5.6. Goran Dimic, Nicholas D. Sidiropoulos, Leandros  Tassiulas, "Wireless Networks with retransmission Diversity Access  Mechanisms: Stable Throughput and Delay Properties", IEEE Transactions  on Signal Processing Vol. 51 Is. 8 , pp. 2019 -2030 Aug. 2003
    1.5.7. Iordanis Koutsopoulos Resource allocation issues in  broadband wireless networks with OFDM signaling December 2002. 
         
    1.6  Wireless cellular networks: architectures, resource allocation and quality of  service  
    1.6.1. S. Papavassiliou, L. Tassiulas, P.  Tandon "Meeting QOS requirements in a cellular network with reuse  partitioning,''  IEEE Journal on Selected Areas in Communications , Vol.  12, No. 8, pp. 1389-1401, October 1994.
    1.6.2. F. Farrokhi, K.J.R. Liu, L.  Tassiulas, "Downlink power control and base station assignment,''  IEEE Communications Letters , pp. 102-104, July 1997.
    1.6.3. S. Papavassiliou, L. Tassiulas, "Joint  optimal channel base station and power assignment for wireless access,''  IEEE/ACM  Transactions on Networking , Vol. 4, no. 6, pp. 857-872, December  1996.
    1.6.4. S. Papavassiliou, L. Tassiulas, "Improving  the capacity in wireless networks through integrated channel, base station  and power assignment,''  IEEE Transactions on Vehicular Technology , Vol.  47, No 2, pp. 417-427, May, 1998.
    1.6.5. L. Tassiulas, "Efficient spectrum management for  high capacity wireless networks," Proceedings of the 8th IEEE Workshop on  Computer Communication, Del Mar, California , 1993.  (invited)
    1.6.6. L. Tassiulas, S. Weinstein , "Traffic forwarding  by radio relay in personal communication networks," Proceedings of the 2nd  International Conference on Universal Personal Communications, Ottawa , Canada  , 1993.
    1.6.7. P. Bhattacharya, L. Tassiulas, "An optimal channel  allocation algorithm in a linear cellular reuse partitioning network,"  Proceedings of the IEEE workshop on Multiaccess, Mobility and Teletraffic for  Personal Communications, Paris, France, May 1996.
    1.6.8. Symeon Papavassiliou, Efficient Resource Allocation  in High Capacity Wireless Networks, Doctoral Dissertation, Polytechnic University , New York , 1995 
    1.6.9. Puneet Tandon    Masters Thesis Polytechnic University , New    York , 1994
    1.6.10. Svetlana Nadelson Cellular Systems Control Using  Neural Networks Masters Thesis Polytechnic University , New York , 1995 
1.7  Mobility tracking in cellular wireless networks  
      1.7.1. F. Anjum, L. Tassiulas , M.  Shayman " Optimal paging for mobile location tracking ," to appear in the Advances in Performance Analysis , 2001.
      1.7.2. Y. Mihalas, L. Tassiulas, "Multiuser paging policies  in cellular wireless networks," Proceedings of the IEEE workshop on  Multiaccess, Mobility and Teletraffic for Personal Communications, Washington DC  , 1998. 
      1.7.3. L. Tassiulas, F. Anjum, "A hierarchical  multiresolution registration structure for mobility tracking," Proceedings  of the 5th International Conference on Universal Personal Communications,  Boston, MA, September 1996.
      1.7.4. L. Tassiulas, F. Anjum, "Location tracking  mechanisms for optimal mobility adaptation," Proceedings of the 34th Annual  Allerton Conference on Communications Control and Computing, Urbana , Illinois  , 1996.
      1.7.5. P. Kumar, L. Tassiulas, " Mobile  multi-user ATM platforms: architectures, design issues and challenges,"  IEEE Networks Magazine , vol 14, no 2, pp.42-50, March 2000.
      1.7.6. Yianni Michalas; Multi-user Paging Strategies for  Increased Signaling Efficiency , Masters Thesis, University  of Maryland College Park ,1998.
          
      2.  Sensor networks and energy conservation  
      2.1. J.H. Chang, L. Tassiulas,  "Maximum life time routing in wireless sensor networks," to appear IEEE/ACM  Transactions on Networking, 2003.
      2.2. Koushik Kar, M. Kodialam, T. V. Lakshman, Leandros  Tassiulas , " Routing for Network Capacity Maximization in  Energy-constrained Ad-hoc Networks ," submitted to IEEE/ACM  Transactions on Networking, 2003.
      2.3. J.H. Chang, L. Tassiulas, " Energy Conserving  Routing in Wireless Ad-hoc Networks ," Proceedings of IEEE INFOCOM00, Tel-Aviv , Israel  , March 2000. 
      2.4. Koushik Kar, M. Kodialam, T. V. Lakshman, Leandros Tassiulas  , " Routing for Network Capacity Maximization in Energy-constrained Ad-hoc  Networks ," Proceedings of IEEE INFOCOM03, San Francisco 2003.
      2.5. Jae-Hwan Chang Adaptive beamforming and energy  efficient routing in wireless networks, Doctoral Dissertation, University of Maryland , College Park 2003. 
3.1  Congestion control and Quality of Service provisioning in the INTERNET  
      3.1.1. L. Tassiulas, Y.C. Hung, S.  Panwar, "Optimal buffer control during congestion in an ATM network  node,''  IEEE/ACM Transactions on Networking,  Vol. 2, No.  4, pp. 374-396, August 1994.
      3.1.2. L. Tassiulas, "Adaptive back-pressure  congestion control based on local information,''  IEEE  Transactions on Automatic Control, Vol. 40, No. 2, pp. 236-250,  February 1995.
      3.1.3. L. Tassiulas, A. Ephremides, "Throughput  properties of a queueing network with distributed dynamic routing and flow  control,"  Advances in Applied Probability,  Vol. 28,  pp. 285-307, March 1996.
      3.1.4. L. Tassiulas, "Push-forward link-level  scheduling for network-wide performance,''  IEEE/ACM Transactions  on Networking , Vol. 4, No. 3, pp. 398-407, June 1996.
      3.1.5. L. Tassiulas, "Cut-through switching,  pipelining and scheduling for network evacuation,''  IEEE/ACM  Transactions on Networking , vol. 7, no 1, pp 88-97, February 1999.
      3.1.6. P. Bhattacharya, L. Tassiulas, A.  Ephremides, "Optimal scheduling with deadline constraints in tree  networks,"  IEEE Transactions on Automatic Control , Vol.  42, No. 12, pp. 1703-1705, 1997.
      3.1.7. G. Kesidis, L. Tassiulas, "Traffic shaping for a  loss system," to appear in the IEEE Communication Letters , pp.  417-419, Dec 2000 .
      3.1.8. F. Anjum, L. Tassiulas, "Fair bandwidth sharing  among adaptive and non-adaptive flows in the Internet," Proceedings of  IEEE INFOCOM99, New York , New York , March 1999. 
      3.1.9. K. Kar, S. Sarkar, L. Tassiulas, "Optimization  Based Rate Control for Multipath Sessions" , Proceedings of  Seventeenth International Teletraffic Congress (ITC), Salvador da Bahia,  Brazil, December 2001 . 
3.2  High speed switching: architectures algorithms and performance  
      3.2.1. V. Tabatabaae, L. Georgiadis, L.  Tassiulas, "QoS Provisioning and Tracking Fluid Policies in Input Queueing  Switches," IEEE/ACM Transactions on Networking , vol 9 no 5 pp  605-617, October 2001.
      3.2.2 K. Kar, T.V. Lakshman, D. Stiliadis, L. Tassiulas "  Scheduling Algorithms for Optical Packet Fabrics ." IEEE Journal on  Selected Areas on Communications Special Issue on "High  Performance Optical/Electronic Switches/Routers for High Speed Internet"  Vol. 21 Issue: 7 , pp. 1143 -1155, Sept. 2003.
      3.2.3. L. Tassiulas, "Linear complexity algorithms for  maximum throughput in radio networks and input queuing switches",  Proceedings of INFOCOM98, San Francisco, California, 1998.
      3.2.4. Vahid Tabatabaee, Leandros Tassiulas , " MNCM a  new class of efficient scheduling algorithms for input-buffered switches with  no speedup ," Proceedings of IEEE INFOCOM03, San Francisco 2003.
      3.2.5. L. Tassiulas, A. Ephremides, "Stability  properties of constrained queueing systems and scheduling policies for  maximum throughput in multihop radio networks,"  IEEE  Transactions on Automatic Control, Vol. 37, No. 12, pp. 1936-1949,  December 1992.  
      3.2.6. Vahid Tabatabaee Scheduling and Rate Provisioning  for Input-Buffered Cell Based Switch fabrics, Doctoral Dissertation, University of Maryland  , College Park  , 2003. 
      3.2.7. Koushik Kar, Masters Thesis, University  of Maryland , College Park , 2001. 
         
      3.3  Ring Networks: architectures control and management  
      3.3.1. L. Tassiulas, J. Joung, ''Performance  measures and scheduling policies in ring networks,''  IEEE/ACM  Transactions on Networking , Vol. 3, pp. 576-584, 1995.
      3.3.2. L. Tassiulas, L. Georgiadis, "Any  work-conserving policy stabilizes the ring with spatial reuse,''  IEEE/ACM  Transactions on Networking,  Vol. 4, No. 2, pp. 205-208, April 1996.
      3.3.3. L. Georgiadis, W. Szpankowski,  L. Tassiulas, "A scheduling policy with maximal stability  region for ring networks with spatial reuse,''  Queueing Systems:  Theory and Applications, Vol. 19, pp. 131-148, October 1995.
      3.3.4. L. Georgiadis, W. Szpankowski, L.  Tassiulas, "Stability analysis of quota allocation access  protocols in ring networks with spatial reuse,''  IEEE  Transactions on Information Theory, Vol. 43, No. 3, pp. 923-937, May  1997. 
         
      3.4  Multicasting: architectures, routing and congestion control  
      3.4.1. S. Sarkar , L. Tassiulas, "A  framework for routing and congestion control for multicast information  flows," to appear in the IEEE Transactions on Information Theory ,  2001 . (short version appeared in INFOCOM 99)
      3.4.2. S. Sarkar, L. Tassiulas, "Layered bandwidth  allocation for multicasting of hierarchically encoded sources," to appear  in the IEEE Transactions on Computers , 2004.
      3.4.3. S. Sarkar, L. Tassiulas, "Fair distributed congestion  control in multirate multicast networks," to appear in the IEEE/ACM  Transactions on Networking , 2002. (short version appeared in INFOCOM  2000).
      3.4.4. S. Sarkar , L. Tassiulas, "Fair allocation of  utilities in multirate multicast network: a framework for unifying diverse  fairness objectives," IEEE Transactions on Automatic Control ,  vol. 47, no. 6, pp 931-944, June 2002.
      3.4.5. K. Kar, S. Sarkar, L. Tassiulas, " A  Scalable, Low-Overhead Rate Control Algorithm for Multirate Multicast  Sessions," IEEE Journal on Selected Areas on Communications Special  Issue on Network Support for Multicast Communications, vol 20, no 8, October  2002.
      3.4.6. S. Sarkar, T. Ren, L. Tassiulas, "An Asynchronous  Distributed Algorithm for Computation of Fair Rates in Multirate Multicast  Trees" submitted to the IEEE Transactions on Parallel and Distributed  Systems
      3.4.7. Saswati Sarkar, Leandros Tassiulas, "Scheduling  for Fair Allocation of Rates in Multirate Multicast Networks,'' Proceedings of  International Symposium on Information Theory, 2000. 
      3.4.8. S. Sarkar, L. Tassiulas, " Back-pressure based  multicast scheduling for fair bandwidth allocation ," Proceedings of IEEE  INFOCOM01, Anchorage , Alaska April 2001. 
      3.4.9. K. Kar, S. Sarkar , L. Tassiulas, " A simple rate  control algorithm for maximizing total user utillity ," Proceedings of  IEEE INFOCOM01, Anchorage ,   Alaska April 2001. 
      3.4.10. K. Kar, S. Sarkar , L. Tassiulas, " Optimization  based rate control for multirate multicast sessions ," Proceedings of IEEE  INFOCOM01, Anchorage , Alaska April 2001. 
      3.4.11. S. Sarkar, T. Ren, L. Tassiulas, "Achieving  fairness in multicasting with almost stateless rate control" Proceedings  of the conference on "Scalability and Traffic Control in IP Networks"  SPIE, ITcom 2002.
      3.4.12. K. Kar, L. Tassiulas, " Dual  Based Multicast Rate Control with Discrete Bandwidth Constraints"  Proceedings of 41st Annual Allerton Conference on Communication, Control and  Computing, Allerton , Monticello , Illinois , October 1-3, 2003 .
      3.4.13. Saswati Sarkar, Fair Resource Allocation in  Multicast Networks , Doctoral Dissertation, University of Maryland  , College Park 2000.
      3.4.14. Koushik Kar, Scalable Low Overhead Rate Control  Algorithms for Aggregate Utility Maximization , Doctoral Dissertation,  University of Maryland, College Park 2002.. 
      
    3.5  Information delivery in the internet by broadcasting methods  
    3.5.1. C.J. Su, L. Tassiulas, "Joint  Broadcast Scheduling and User's Cache Management for Efficient Information  Delivery," in ACM Journal on Wireless Networks , pp 279-288, vol  6, 4, 2000.
    3.5.2. L. Tassiulas, C.J. Su, "Optimal memory  management strategies for a mobile user in a broadcast data delivery  system,''  IEEE Journal on Selected Areas in Communications , Vol.  15, No 7, pp. 1226-1238, 1997.
    3.5.3. C.J. Su, L. Tassiulas, V. Tsotras, "Broadcast  scheduling for information distribution''  ACM Journal on Wireless  Networks , Vol. 5, No. 2, pp. 137-147, 1999. 
    3.5.4. L. Tassiulas, C.J. Su, "Information delivery  through broadcasting in satellite communication networks'' Automatica ,  special issue on Control Methods in Communication Networks, Vol. 35,  12, p. 2013-2030, December, 1999. 
    3.5.5 O. Ercetin, L. Tassiulas, "Push based information  delivery in two-stage satellite-terrestrial wireless systems," IEEE Transactions  on Computers , vol 50 pp 506-518, May 2001.
    3.5.6. C.J. Su, L. Tassiulas, "Broadcast scheduling for  information distribution," Proceedings of INFOCOM97, Kobe , Japan  , 1997.
    3.5.7. C.J. Su, L. Tassiulas, " Mobile  user's memory management to minimize deadline misses of users requests in a  data broadcasting system," Proceedings of 15th International Teletraffic  Congress, pp. 223-232, June 1997.
    3.5.8. C.J. Su, L. Tassiulas, "Joint broadcast scheduling  and user's cache management for efficient information delivery,"  Proceedings of 4 th ACM/IEEE International Conference on Mobile Computing and  Networking, MOBICOM98, 1998. 
    3.5.9. Chi-Jiun Su, Information Dissemination Through  Broadcast Delivery. Doctoral Dissertation, Polytechnic University , New York  January 1998. 
    3.5.10. Ozgur Ercetin " Information Delivery in  Two-Stage Satellite-Terrestrial Wireless Networks" , Masters Thesis, University of Maryland  College Park  ,1998. 
4.  Performance based network management tools  
      4.1. P. Sarachik, S. Panwar, P. Liang, S.  Papavassiliou, D. Tsaih, L. Tassiulas, ''A Modeling approach for the  performance management of high speed networks,'' in Network  Management and Control , Vol. 2, pp. 149-163, Edited by I.T. Frisch  et al., Plenum Press, 1994. (book chapter)
      4.2. D. Tsaih, G. Lapiotis, S. Panwar,  L. Tassiulas, "A model-based performance management tool for  ATM and frame-relay networks," Journal of Network and Systems  Management , vol 6, no 4, pp399-428 December 1998. 
      4.3. Y.T. Hou, L.Tassiulas, H.J. Chao, "Overview of  implementing ATM-based enterprise local area network for desktop  multimedia computing,''  IEEE Communications Magazine , Vol.  34, no. 4, pp. 70-76, April 1996. 
      5.1  Mobile satellite communication networks  
      5.1.1. J. Koutsopoulos, L. Tassiulas,  "Carrier Grouping for Half-duplex Communication in GSM-based MEO mobile  satellite networks," IEEE Transactions on Wireless Communications, vol.1,  no.2, pp 342-351, Jan. 2002.
      5.1.2. O. Ercetin, S. Krishnamurthy , S.   Dao , L. Tassiulas, " A Predictive Quality of Service Routing  Scheme for Broadband LEO Satellite Networks ," Computer Networks, 2002 (to  appear).
      5.1.3. L. Tassiulas, S. Papavassiliou , "A dynamic  scheduling problem in packet switched satellite networks," Proceedings of  the 33rd CDC, Lake Buena Vista   , Florida , 1994.
      5.1.4. J. Koutsopoulos, L. Tassiulas, "A unified  framework for the study of handover prediction an resource allocation in  non-geostationary mobile satellite networks," Proceedings of Vehicular  Technology Conference, October 1999.
      5.1.5. Iordanis  Koutsopoulos Masters Thesis, Univeristy of Maryland College Park , 1999 
      
    5.2  Communication systems for air-traffic control  
    5.2.1. O. Ercetin, M. Ball, A. Trani, L.  Tassiulas, "Next Generation Satellite Systems for Aeronautical  Communications", to appear International Journal of Satellite  Communications 2003.
    5.2.2 O. Ercetin, M. Ball, A. Trani, L. Tassiulas,  "Delivering Real-Time Weather Maps to Aircraft by Hybrid Unicast/Broadcast  LEO/GEO Satellite Communications", submitted to IEEE Transactions on  Aerospace and Electronic Systems 2002. 
       
    6.  Vehicle routing techniques in transportation problems  
