Presentations

Talks in International Conferences

  1. H. Tanaka, T. Dohi, N. Kaio and S. Osaki, "An investment strategy of European stock option trading, "was presented at International Conference on Operations Research, Vienna, Austria, August 28-31, 1990.
  2. N. Kaio, T. Dohi and S. Osaki, "A note on replacement policies for a cumulative damage model with several shock modes,, "was presented at First China-Japan International Symposium on Industrial Management (ISIM'91), Beijing, China, October 16-19, 1991.
  3. T. Dohi, N. Kaio and S. Osaki, "A note on optimal production planning with lognormal diffusion demand, "was presented at First China-Japan International Symposium on Industrial Management (ISIM'91), Beijing, China, October 16-19, 1991.
  4. T. Dohi, H. Tanaka, N. Kaio and S. Osaki, "A simple portfolio optimization under threshold stopping rule, "was presented at ?nd International Conference on Optimization: Techniques and Applications (ICOTA'92), Singapore, Jun 3-5, 1992.
  5. T. Dohi, N. Kaio and S. Osaki, "Optimal control of a finite dam with a sample path constraint, "was presented at Australia-Japan Workshop on Stochastic Models in Engineering, Technology & Management, Gold Coast, Australia, July 14-16, 1993.
  6. E. Kitaoka, T. Dohi and S. Osaki, "Alternative optimality criteria of portfolio selection based upon threshold stopping rule, "was presented at Australia-Japan Workshop on Stochastic Models in Engineering, Technology & Management, Gold Coast, Australia, July 14-16, 1993.
  7. N. Kaio, T. Dohi and S. Osaki, "A note on block replacement policies with system down state, "was presented at Second China-Japan International Symposium on Industrial Management (ISIM'93), Beijing, China, October 16-19, 1993.
  8. T. Dohi, N. Kaio and S. Osaki, "Optimal order limit policy under cost effectiveness criterion, "was presented at 16th International Conference on Computers & Industrial Engineering (ICC & IE-94), Ashikaga, Japan, March 7-9, 1994.
  9. T. Dohi, N. Kaio and S. Osaki, "Monitored replenishment rules for continuous review cyclic inventory system, "was presented at 16th EURO XIII/OR 36, Glasgow, UK, July 19-22, 1994.
  10. T. Dohi, N. Kaio and S. Osaki, "Optimal ordering policies for a two-unit standby redundant system under cost effectiveness criterion, "was presented at 1994 Pacific Conference on Manufacturing (PCM'94), Jakarta, Indonesia, December 19-22, 1994.
  11. T. Dohi, N. Kaio and S. Osaki, "Solution procedure for a repair limit problem using TTT-transform, "was presented at Second IMA International Conference on Mathematical Models in Maintenance, Salford, UK, April 19-21.
  12. T. Dohi and S. Osaki, "Learning effects of knowledge-based technical analysis systems for financial planning, "was presented at TIMS XXXIII International Meeting, Singapore, June 25-28, 1995 (invited talk).
  13. T. Dohi, N. Kaio and S. Osaki, "Power saving strategies for a portable personal computer --nonparametric approach--, "was presented at The 3rd International Congress on Industrial and Applied Mathematics (ICIAM 95), Hamburg, Germany, July 3-7, 1995.
  14. T. Dohi, T. Aoki, N. Kaio and S. Osaki, "Performance evaluation of nonparametric age replacement methods -- survey and comparison --, "was presented at UK-Japanese Research Workshop on Stochastic Modelling in Innovative Manufacturing, Cambridge, UK, July 19-21, 1995.
  15. T. Dohi, M. Hatakeyama and S. Osaki, "On the network size for neuro-based stock option forecasting system, "was presented at UK-Japanese Research Workshop on Stochastic Modelling in Innovative Manufacturing, Cambridge, UK, July 19-21, 1995).
  16. Y. Shinohara, T. Dohi and S. Osaki, "Approximation methods to reliability function based on the expert opinions, "was presented at Sydney International Statistical Congress (SISC-96), Sydney, Australia, July 8-12, 1996.
  17. T. Dohi, N. Kaio and S. Osaki, "The optimal lot sizing for unreliable economic manufacturing model, "was presented at The International Federation of Operational Research Societies 14th Triennial Conference (IFORS 96), Vancouver, Canada, July 8-12, 1996.
  18. T. Dohi, N. Kaio and S. Osaki, "A graphical method to repair-cost limit replacement policies with imperfect repair, "was presented at Second Australia-Japan Workshop on Stochastic Models in Engineering, Technology & Management, Gold Coast, Australia, July 17-19, 1996.
  19. Y. Shinohara, M. Imanishi, T. Dohi and S. Osaki, "Software reliability prediction using neural network technique, "was presented at Second Australia-Japan Workshop on Stochastic Models in Engineering, Technology & Management, Gold Coast, Australia, July 17-19, 1996.
  20. N. Kaio, T. Dohi and S. Osaki, "Modified block replacement policies taking account of allowed minimal repairs, "was presented at Third China-Japan International Symposium on Industrial Management (ISIM' 96), Nanjing, China, October 14-16, 1996.
  21. Y. Shinohara, T. Dohi and S. Osaki, "Comparisons of optimal release policies for software systems, "was presented at 20th International Conference on Computers & Industrial Engineering (ICC & IE-96), Kyongju, Korea, October 6-9, 1996.
  22. T. Dohi, N. Kaio and S. Osaki, "The optimal control of production time limit, "was presented at 1994 Pacific Conference on Manufacturing (PCM'96), Seoul, Korea, October 29-31, 1996.
  23. T. Dohi and S. Osaki, "The optimal policy for an economic manufacturing model with stochastic machine breakdown and repair, "was presented at 6th IFIP TC5/WG5.7 International Conference on Advances in Production Management Systems (APMS'96), Kyoto, Japan, November 4-6, 1996.
  24. H. Okamura, T. Dohi and S. Osaki, "Optimal timing strategies for controlled M/G/1 queueing system via diffusion approximation approach, "was presented at 28th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 96), Kyoto, Japan, November 14-16, 1996.
  25. T. Dohi, N. Kaio and S. Osaki, "On the optimal ordering policies in maintenance theory -- survey and applications --, "was presented at VIII International Symposium on Applied Stochastic Models and Data Analysis (ASMDA'97), Napoli, Italy, June 11-14, 1997 (invited talk).
  26. T. Dohi, N. Kaio and S. Osaki, "Some maintenance policies in unreliable manufacturing environment, "was presented at The European Consortium on Maintenance Management and Quality Control, Lisbon, Portugal, June 15-17, 1997 (invited talk).
  27. T. Dohi, N. Kaio and S. Osaki, "Spare parts inventory control policies under cost effectiveness criterion, "was presented at The 14th International Conference on Production Research (ICPR'97), Osaka, Japan, August 4-8, 1997.
  28. T. Dohi, T. Aoki, N. Kaio and S. Osaki, "Nonparametric preventive maintenance policy under earning rate criterion, "was presented at IFAC Symposium of SAFEPROCESS'97, Kingston upon Hull, UK, August 26-28, 1997.
  29. T. Dohi, N. Kaio and S. Osaki, "Optimal maintenance strategies under intermittently used environment, "was presented at INFORMS Meeting, Dallas, USA, October 26-27, 1997 (invited talk).
  30. T. Dohi, M. Shigeta and S. Osaki, "A stock investment expert system based on a fuzzy neural network, "was presented at The 29th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 97), Tokyo, Japan, November 10--12, 1997.
  31. Y. Shinohara, T. Dohi and S. Osaki, "Determination of optimal software release timing via GMDH neural networks, "was presented at The 29th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 97), Tokyo, Japan, November 10--12, 1997.
  32. T. Dohi, N. Kosugi, N. Kaio and S. Osaki, "Comparison of checkpoint institution methods based on a simple probability model, "was presented at The 4th Coference of the Association of Asian-Pacific Operational Research Societies, within IFORS (APORS' 97), Melbourne, Australia, November 30 -- December 21, 1997.
  33. T. Dohi, N. Kaio and S. Osaki, "An empirical estimation method for the optimal repair-limit replacement problems with discounting, "was presented at First Euro-Japanese Workshop on Stochastic Risk Modelling for Finance, Insurance, Production and Reliability, Brussels, Belgium, September 7--9, 1998.
  34. T. Dohi, H. Morishita and S. Osaki, "A statistical estimation method of optimal software release timing applying autoregressive models, "was presented at First Euro-Japanese Workshop on Stochastic Risk Modelling for Finance, Insurance, Production and Reliability, Brussels, Belgium, September 7--9, 1998.
  35. T. Dohi, Y. Nishio and S. Osaki, "Determination of optimal burn-in schedule applying a neural network, "was presented at The 14th International Conference on Computer-Aided Production Engineering (CAPE'98), Tokyo, Japan, September 8--10, 1998.
  36. N. Kaio, T. Dohi and S. Osaki, "A note on determination of lead time in ordering policy, "was presented at 4th China-Japan International Symposium on Industrial Management (ISIM'98), Dalian, China, October 14-16, 1998.
  37. T. Dohi, H. Nagai, N. Kaio and S. Osaki, "An improvement of the nonparametric repair-limit replacement method by a cubic spline approximation, "was presented at The 30th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 98), Kyoto, Japan, November 4--6, 1998.
  38. T. Dohi, W. Y. Yun, N. Kaio and S. Osaki, "Optimal design of economic manufacturing process with machine failure rate depending on production speed, "was presented at International Symposium on Manufacturing Strategy'98 (ISMS'98), Tokyo, Japan, November 18--20, 1998.
  39. T. Dohi, N. Kaio and S. Osaki, "Controlled buffer systems with different recovery functions and their comparison, "was presented at The Second International Symposium on Semi-Markov Models: Theory and Applications, Compiegne, France, 1998.
  40. T. Dohi, H. Okamura and S. Osaki, "Optimal control of preventive maintenance schedule and safety stocks in an unreliable manufacturing environment, "was presented at International Conference on Industrial Engineering and Production Management (IEPM'99), Glasgow, UK, July 12--15, 1999.
  41. T. Dohi, A. Ashioka, N. Kaio and S. Osaki, "Optimizing the optimal repair- limit replacement schedule with discounting and imperfect Repair, "was presented at Integrity, Reliability and Failure: An International Conference, Port, Portugal, July 19--22, 1999.
  42. T. Dohi, A. Ashioka, N. Kaio and S. Osaki, "The optimal repair-time limit replacement policy with imperfect repair: Lorenz transform approach, "was presented at The First Western Pacific and Third Australia-Japan Workshop on Stochastic Models in Engineering, Technology and Management, Christchurch, New Zealand, September 23--25, 1999.
  43. T. Dohi, K. Yasui and S. Osaki, "Software reliability assessment models based on cumulative Bernoulli trial processes, "was presented at The First Western Pacific and Third Australia-Japan Workshop on Stochastic Models in Engineering, Technology and Management, Christchurch, New Zealand, September 23--25, 1999.
  44. H. Okamura, T. Dohi and S. Osaki, "The phase type approximation for the optimal auto-sleep scheduling, "was presented at The First Western Pacific and 3rd Australia-Japan Workshop on Stochastic Models in Engineering, Technology and Management, Christchurch, New Zealand, September 23--25, 1999.
  45. T. Dohi}, A. Ashioka, N. Kaio and S. Osaki, "A simulation study on the cost distribution under age replacement policy with discounting, "was presented at The Second Asia-Pacific Conference on Industrial Engineering and Management Systems, Kanazawa, Japan, October 30-31, 1999.
  46. H. Okamura, K. Hamamoto, T. Dohi and S. Osaki, "The diffusion approximation method for the G/G/1 type of economic manufacturing quantity process with preventive maintenance, "was presented at The Second Asia-Pacific Conference on Industrial Engineering and Management Systems, Kanazawa, Japan, October 30-31, 1999.
  47. T. Dohi, S. Nagai and S. Osaki, "A computation algorithm to generate the optimal block replacement schedule -- radial basis function neural network approach --, "was presented at The 31st ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 99), Yokohama, Japan, November 11--12, 1999.
  48. H. Okamura, T. Dohi, N. Kaio and S. Osaki, "The optimal control-limit policies for buffer systems with different recovery functions, "was presented at The 31st ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 99), Yokohama, Japan, November 11--12, 1999.
  49. T. Dohi, N. Kaio and S. Osaki, "Optimal checkpointing and rollback strategies with media failures: statistical estimation algorithms, "was presented at 1999 Pacific Rim International Symposium on Dependable Computing (PRDC 1999), Hong Kong, China, December 16--17, 1999.
  50. T. Dohi, N. Kaio and S. Osaki, "A new graphical method to estimate the optimal repair-time limit with incomplete repair and discounting, "was presented at International Conference on Applied Stochastic System Modeling (ASSM'2000), Kyoto, Japan, March 29-30, 2000.
  51. H. Okamura, T. Dohi and S. Osaki, "A structural approximation method to generate the optimal auto-sleep schedule for a computer system, "was presented at International Conference on Applied Stochastic System Modeling (ASSM'2000), Kyoto, Japan, March 29-30, 2000.
  52. N. Wakana, T. Dohi, N. Kaio and S. Osaki, "On the first failure time of a two-unit paralell redundant system with deterioration on a lattice, "was presented at Second International Conference on Mathematical Methods in Reliability (MMR' 2000), Bordeaux, France, July 4--7, 2000.
  53. H. Okamura, T. Dohi and S. Osaki, "The optimal preventive maintenance schedule for an economic manufacturing quantity process: phase type approximation method, "was presented at Second International Conference on Mathematical Methods in Reliability (MMR' 2000), Bordeaux, France, July 4--7, 2000.
  54. H. Okamura, T. Dohi and S. Osaki, "The optimal preventive maintenance policies for an economic manufacturing quantity process in Markovian environment, "was presented at The International Conference on Production Research Special (ICPR-2000), Bangkok, Thailand, August 2--4, 2000.
  55. N. Wakana, T. Dohi and S. Osaki, "Bivariate cumulative Bernoulli trial process and its application to reliability assessment, "was presented at 6th ISSAT International Conference on Reliability and Quality in Design, Orlando, USA, August 9--11, 2000.
  56. H. Okamura, A. Fujimoto, T. Dohi, S. Osaki and K. S. Trivedi, "The optimal preventive maintenance policy for a software system with multi server station, "was presented at 6th ISSAT International Conference on Reliability and Quality in Design, Orlando, USA, August 9--11, 2000.
  57. T. Dohi, T. Danjou, N. Kaio and S. Osaki, "The statistical estimation for delivery schedule of spare units, "was presented at 6th ISSAT International Conference on Reliability and Quality in Design, Orlando, USA, August 9--11, 2000.
  58. T. Dohi, S. Osaki and K. S. Trivedi, "Bayesian estimation for a unified software reliability growth model and its comparison, "was presented at The 2000 Joint Statistical Meetings (JSM 2000), Indianapolis, USA, August 13--17, 2000.
  59. H. Okamura, T. Sugihara, T. Dohi and S. Osaki, "Bayesian statistical estimation of the optimal shutdown schedule in a computer system, "was presented at The 2000 Joint Statistical Meetings (JSM 2000), Indianapolis, USA, August 13--17, 2000.
  60. T. Dohi, H. Okamura and S. Osaki, "The optimal design of delivery schedule in a continuous-time (r, Q) cyclic inventory system, "was presented at 2000 Pacific Conference on Manufacturing (PCM'2000), Detroit, USA, October 6-8, 2000.
  61. H. Okamura, T. Dohi and S. Osaki, "Performance analysis of a transaction based software system with shutdown, "was presented at Second International Workshop on Software and Performance (WOSP'2000), Ottawa, Canada, September 17-20, 2000.
  62. T. Dohi, S. Osaki and K. S. Trivedi, "Heuristic self-organization algorithms for software reliability assessment and their applications, "was presented at 11th International Symposium on Software Reliability Engineering (ISSRE'00), San Jose, CA, USA, October 8-11, 2000.
  63. N. Kaio, T. Dohi and S. Osaki, "A Note on planned maintenance policies with minimal repairs, "was presented at The 5th China-Japan International Symposium on Industrial Management (ISIM'2000), Beijing, China, October 16-18, 2000.
  64. H. Okamura, T. Dohi and S. Osaki, "Characterizing the idle-period distribution of a GI/G/1 queue with vacation, "was presented at 32nd ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 00), Tottori, Japan, November 1-2, 2000.
  65. T. Dohi, K. Goseva-Popstojanova and K. S. Trivedi, "Analysis of software cost models with rejuvenation, "was presented at 5th IEEE International Symposium on High Assurance Systems Engineering (HASE 2000), Albuquerque, NM, USA, November 15-17, 2000.
  66. T. Dohi, H. Okamura, N. Kaio and S. Osaki, "The age-dependent optimal warranty policy and its application to software maintenance contract, "was presented at 5th International Conference on Probabilistic Safety Assessment and Management (PSAM 5), Osaka, Japan, November 27-December 1, 2000.
  67. T. Dohi, K. Goseva-Popstojanova and K. S. Trivedi, "Statistical non-parametric algorithms to estimate the optimal software rejuvenation schedule, "was presented at 2000 Pacific Rim International Symposium on Dependable Computing (PRDC 2000), Los Angels, CA, USA, December 18-20, 2000.
  68. T. Dohi, N. Kaio and S. Osaki, "The cost-effective optimal order--replacement policies, "was presented at 10th International Symposium on Applied Stochastic Models and Data Analysis ASMDA 2001), Compiegne, France, June 12--15, 2001.
  69. H. Okamura, T. Dohi and S. Osaki, "Optimal shutdown schedule for a single-user operating system under a Markovian arrival circumstance, "was presented at 10th International Symposium on Applied Stochastic Models and Data Analysis (ASMDA 2001), Compiegne, France, June 12--15, 2001.
  70. T. Dohi, N. Wakana, S. Osaki and K. S. Trivedi, "Analysis on the hypergeometric software reliability model, "was presented at 12th International Symposium on Software Reliability Engineering (ISSRE'01), Hong Kong, China, November 28 -- December 1, 2001.
  71. T. Dohi, T. Danjou and H. Okamura, "Optimal software rejuvenation policy with discounting, "was presented at 2001 Pacific Rim International Symposium on Dependable Computing (PRDC 2001), Seoul, Korea, December 17--19, 2001.
  72. H. Okamura and T. Dohi, "A sequential estimation algorithm for the optimal shutdown policy in a queueing system, "was presented at 2002 Japan-USA Symposium on Flexible Automation, Hiroshima, Japan, July 15--17, 2002.
  73. T. Dohi, A. Ashioka, N. Kaio and S. Osaki, "Statistical estimation algorithms for some repair--limit replacement scheduling problems under earning rate criteria, "was presented at Second Euro-Japanese Workshop on Stochastic Risk Modelling for Fianance, Insurance, Production and Reliability, Chamonix, France, September 18--20, 2002.
  74. H. Fujio, H. Okamura and T. Dohi, "Fine-grained shock models to rejuvenate a software system, "was presented at Second Euro-Japanese Workshop on Stochastic Risk Modelling for Fianance, Insurance, Production and Reliability, Chamonix, France, September 18--20, 2002.
  75. T. Dohi, K. Iwamoto H. Okamura and N. Kaio, "Discrete-time cost analysis for a telecommunication billing application with rejuvenation, "was presented at Second Euro-Japanese Workshop on Stochastic Risk Modelling for Fianance, Insurance, Production and Reliability, Chamonix, France, September 18--20, 2002.
  76. H. Okamura, T. Dohi and S. Osaki, "A unified approximation of the optimal shutdown schedule based on the regulated Brownian motion process, "was presented at Second Euro-Japanese Workshop on Stochastic Risk Modelling for Fianance, Insurance, Production and Reliability, Chamonix, France, September 18--20, 2002.
  77. H. Okamura, Y. Watanabe and T. Dohi, "Estimating mixed software reliability models based on the EM algorithms, "was presented at 2002 International Symposium on Empirical Software Engineering (ISESE 2002), Nara, Japan, October 3--4, 2002.
  78. T. Dohi, N. Kaio and K. S. Trivedi, "Availability models with age dependent-checkpointing, "was presented at 21st Symposium on Reliable Distributed Systems (SRDS02), Osaka, Japan, October 13--16, 2002.
  79. T. Dohi, K. Iwamoto, H. Okamura and N. Kaio, "Discrete availability models to rejuvenate a telecommunication billing application,, "was presented at 7th IEEE International Symposium on High Assurance Systems Engineering (HASE2002), Tokyo, Japan, October 23--25, 2002.
  80. H. Okamura, K. Kumada and T. Dohi, "Diffusion approximation for incomplete convolutions arising in multi-stage production/inventory systems, "was presented at The 7th Annual International Conference on Industrial Engineering (ICIE 2002), Busan, Korea, October 24--26, 2002.
  81. T. Dohi, H. Okamura and N. Kaio, "Optimal age-dependent checkpoint strategy with retry of rollback recovery, "was presented at The 2nd IEEE Computer Society International Workshop on Autonomous Decentralized Systems (IWADS2002), Beijing, China, November 4-6, 2002.
  82. H. Okamura, S. Miyahara and T. Dohi, "Dependability analysis of a client/server software systems with rejuvenation, "was presented at 13th International Symposium on Software Reliability Engineering (ISSRE'02), Annapolis, Maryland, USA, November 12--15, 2002.
  83. H. Suzuki, T. Dohi, K. Goseva-Popstojanova and K. S. Trivedi, "Analysis of multstep failure models with periodic software rejuvenation, "was presented at International Conference on Stochastic Modelling and the IV International Workshop on Retrial Queues, Trikkakara, India, December 17 -- 21, 2002.
  84. B. C. Giri and T. Dohi, "Discrete-time stochastic EMQ models with machine breakdown and repair, "was presented at 9th International Conference on Reliability and Quality in Design (ISSAT 2004), Honolulu, USA, August 6--8, 2003.
  85. K. Iwamoto, T. Dohi and N. Kaio, "Estimating discrete-time periodic software rejuvenation schedules under cost effectiveness criterion, "was presented at 9th International Conference on Reliability and Quality in Design (ISSAT 2004), Honolulu, USA, August 6--8, 2003.
  86. B. C. Giri and T. Dohi, "Optimal design of production rate in a stochastic manufacturing system with a failure-prone machine, "was presented at The 35th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 03), Ube, Japan, October 30--31, 2003.
  87. B. C. Giri and T. Dohi, "Optimal lot sizing for an unreliable production system in discrete time setting, "was presented at The 8th Annual International Conference on Industrial Engineering: Theory, Applications and Practice (ICIE 2003), Las Vegas, USA, November 10--12, 2003.
  88. H. Suzuki, T. Dohi, N. Kaio and K. S. Trivedi, "Maximizing interval reliability in operational software system with rejuvenation, "was presented at 14th International Symposium on Software Reliability Engineering (ISSRE'03), Denver, Colorado, USA, November 17--20, 2003.
  89. H. Okamura, T. Watanabe and T. Dohi, "An iterative scheme for maximum likelihood estimation in software reliability modeling, "was presented at 14th International Symposium on Software Reliability Engineering (ISSRE'03), Denver, Colorado, USA, November 17--20, 2003.
  90. B. C. Giri and T. Dohi, "Optimal lot sizing for an unreliable manufacturing system under cost-effectiveness criterion, "was presented at The 9th Asia Pacific Management Conference -- Managing in the E-Era - (APMC), Osaka, Japan, November 20--21, 2003.
  91. T. Danjou, T. Dohi, N. Kaio and S. Osaki, "Analysis of periodic sotware rejuvenation policies based on net present value approach, "was presented at Second International Conference on Quality, Reliability and Information Technology, New Delhi, India, December 18--20, 2003.
  92. H. Okamura, T. Dohi and S. Osaki, "Some remarks on Littlewood software reliability model, "was presented at Second International Conference on Quality, Reliability and Information Technology, New Delhi, India, December 18--20, 2003.
  93. H. Okamura, T. Dohi and S. Osaki, "EM algorithms for logistic software reliability models, "was presented at 7th IASTED International Conference on Software Engineering, Innsbrucxk, Austria, February 16--18, 2004.
  94. H. Okamura, Y. Nishimura and T. Dohi, "A dynamic checkpointing scheme based on reinforcement learning, "was presented at The 10th International Symposium on Pacific Rim Dependable Computing (PRDC 2004), Tahiti, French Polynesia, March 3--5, 2004.
  95. H. Okamura, A. Murayama and T. Dohi, "EM algorithm for discrete software reliability models: a unified parameter estimation method, "was presented at 8th IEEE International Symposium on High Assurance Systems Engineering (HASE 2004), Tampa, Florida, March 25--26, 2004.
  96. B. C. Giri and T. Dohi, "Cost-effective production policy for a stochastic unreliable manufacturing system, "was presented at 5th IMA International Conference on Modelling in Industrial Maintenance and Reliability -- Impacting on Practice -- (MIMAR 2004), Salford, UK, April 5--7, 2004.
  97. T. Dohi, N. Kaio and S. Osaki, "Estimating the cost-effective checking request policies, "was presented at 4th International Conference on Mathematical Methods in Reliability -- Methodology and Practice -- (MMR 2003), Santa Fe, New Mexico, USA, June 21--25, 2004.
  98. K. Rinsaka and T. Dohi, "Optimal testing/maintenance design in a software development project, "was presented at 4th International Conference on Mathematical Methods in Reliability -- Methodology and Practice -- (MMR 2003), Santa Fe, New Mexico, USA, June 21--25, 2004.
  99. H. Okamura and T. Dohi, "EM algorithms for extreme-value software reliability models, "was presented at 4th International Conference on Mathematical Methods in Reliability -- Methodology and Practice -- (MMR 2003), Santa Fe, New Mexico, USA, June 21--25, 2004.
  100. T. Ozaki, T. Dohi, H. Okamura and N. Kaio, "Min-max checkpoint placement under incomplete information, "was presented at The International Conference on Dependable Systems and Networks (DSN-2004) -- Performance and Dependability Symposium, Florence, Italy, June 28--July 1, 2004.
  101. H. Okamura, T. Sugihara and T. Dohi, "A dynamic power management model based on a semi-Markov decision process, "was presented at 47th IEEE International Midwest Symposium on Circuit and Systems (MWSCAS 2004), Hiroshima, Japan, July 25--28, 2004.
  102. K. Rinsaka and T. Dohi, "Who solved the optimal software release problem based on Markovian software reliability model?, "was presented at 47th IEEE International Midwest Symposium on Circuit and Systems (MWSCAS 2004), Hiroshima, Japan, July 25--28, 2004.
  103. H. Okamura, T. Fukuda and T. Dohi, "An improved instrusion-detection model by profiling correlated access data, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  104. K. Rinsaka and T. Dohi, "Determination of optimal warranty period in a software development project, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  105. B. C. Giri, T. Dohi and N. Kaio, "Discrete-time spare ordering policy with lead time and discounting, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  106. K. Iwamoto, T. Dohi and N. Kaio, "Analysis of discrete-time software cost model based on NPV approach, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  107. T. Ozaki, T. Dohi and N. Kaio, "Optimal inspection policies with an euality constraint based on the variational calculus approach, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  108. T. Ando and T. Dohi, "How can we estimate software reliability with a continuous-state software reliability model?, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  109. H. Okamura, N. Kobayashi and T. Dohi, "Dependence of computer virus prevalence on network structure--stochastic modeling approach--, "was presented at 2004 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2004), Hiroshima, Japan, August 26--27, 2004.
  110. T. Dohi and N. Kaio, "Discrete repair-time limit replacement program, "was presented at 5th International Conference on Operations and Quantitative Management (ICOQM-V), Seoul, Korea, October 25--27, 2004.
  111. K. Rinsaka and T. Dohi, "Determining the discrete warranty period in a software development project, "was presented at 10th Asia Pacific Management Conference (APMC-2004), Daejeon, Korea, October 27--29, 2004.
  112. T. Dohi, T. Danjou and N. Kaio, "Determining the optimal delivery schedule of spare units via NPV approach, "was presented at 10th Asia Pacific Management Conference (APMC-2004), Daejeon, Korea, October 27--29, 2004.
  113. H. Okamura, H. Furumura and T. Dohi, "Bayesian approach to estimate software reliability in fault-removal environment, "was presented at The 15th IEEE International Symposium on Software Reliability Engineering (ISSRE 2004) (Fast Abstract), Saint-Malo, France, December 2--5, 2004.
  114. B. C. Giri and T. Dohi, "Inspection scheduling for imperfect production processes, "was presented at 36th ISCIE International Symposium on Stochastic Systems Theory and Its Applications (SSS' 04), Saitama, Japan, November 3--4, 2004.
  115. K. Iwamoto, T. Dohi and N. Kaio, "A discrete software cost model with periodic rejuvenation for a telecommunication billing application," was presented at 8th IASTED International Conference on Software Engineering and Applications, Cambridge, USA, November 9--11, 2004.
  116. T. Dohi, S. Osaki and K. S. Trivedi, "An infinite server queueing approach for describing software reliability growth ~unified modeling and estimation framework~," was presented at 11th Asia-Pacific Software Engineering Conference (APSEC 2004), Busan, Korea, December 30--December 3, 2004.
  117. H. Okamura, K. Tsuruta and T. Dohi, "An architecture-based software reliability model with finite number of faults," was presented at 9th IASTED International Conference on Software Engineering, Innsbrucxk, Austria, February 15--17, 2005.
  118. H. Okamura, S. Miyahara and T. Dohi, "Effect of preventive rejuvenation in communication network system with burst arrival," was presented at The 7th International Symposium on Autonomous Decentralized Systems (ISADS 2005), Chengdu, China, April 4--6, 2005.
  119. K. Rinsaka and T. Dohi, "Behavioral analysis of a fault-torellant software system with rejuvenation," was presented at The 7th International Symposium on Autonomous Decentralized Systems (ISADS 2005), Chengdu, China, April 4--6, 2005.
  120. H. Okamura, H. Kobayashi and T. Dohi,“Extinction time distribution of internet worms in stochastic kill-signal model,” was presented at The International Conference on Dependable Systems and Networks (DSN 2005) (Fast Abstract), Yokohama, Japan, June 28-- July 1, 2005.
  121. H. Eto and T. Dohi,“Optimality of control-limit type of software rejuvenation policy,” was presented at First International Workshop on Reliability and Autonomic Management in Parallel and Distributed Systems (RAMPDS) within IEEE 11th International Conference on Parallel and Distributed Systems (ICPDS-2005), Fukuoka, Japan, July 20 -- 22, 2005.
  122. H. Okamura, K. Iwamoto and T. Dohi,“A dynamic programming algorithm for software rejuvenation scheduling under distributed computation circumstance,” was presented at First International Workshop on Reliability and Autonomic Management in Parallel and Distributed Systems (RAMPDS) within IEEE 11th International Conference on Parallel and Distributed Systems (ICPDS-2005), Fukuoka, Japan, July 20 -- 22, 2005.
  123. K. Ohishi, H. Okamura and T. Dohi,“Gompertz software reliability model and its application,”will be presented at The 29th Annual International Computer Software and Application Conference (COMPSAC 2005), Edinburgh, UK, July 25 -- 28, 2005.
  124. H. Okamura, K. Iwamoto and T. Dohi,“A DP-based optimal checkpointing algorithm for a real time system,”will be presented at 11th International Conference on Reliability and Quality in Design (ISSAT 2005), St. Louis, USA, August 4 -- 6, 2005.
  125. T. Dohi, N. Kaio and S. Osaki,“Discrete-time opportunistic replacement policy and its application,”will be presented at International Workshop on Recent Advances in Stochastic Operations Research, Canmore, Canada, August 25 --26, 2005.
  126. K. Rinsaka and T. Dohi,“Estimating age replacement policies with a small sample data,'' {\it{International Workshop on Recent Advances in Stochastic Operations Research,”will be presented at International Workshop on Recent Advances in Stochastic Operations Research, Canmore, Canada, August 25 --26, 2005.
  127. N. Kobayashi and T. Dohi,“Bayesian perspective of optimal checkpoint placement,”will be presented at 9th IEEE International Symposium on High Assurance Systems Engineering (HASE 2005), Heidelberg, Germerny, October 12--14, 2005.
  128. K. Iwamoto, T. Dohi and N. Kaio,“Estimating periodic software rejuvenation schedule in discrete operational circumstance,”was presented at 9th IEEE International Symposium on High Assurance Systems Engineering (HASE 2005) (Fast Abstract), Heidelberg, Germerny, October 12--14, 2005.
  129. H. Okamura, N. Kobayashi and T. Dohi,“Markovian modeling and analysis of Internet worm propagation,”was presented at 16th International Symposium on Software Reliability Engineering (ISSRE 2005), Chicago, USA, November 1--4, 2005.
  130. K. Iwamoto, T. Dohi and N. Kaio,“Monitoring the health condition of ubiquitous systems: rejuvenation v.s. recovery,”was presented at First IFIP Workshop on Trusted and Autonomic Ubiquitous and Embedded Systems (TAUES '05) within The 2005 IFIP International Conference on Embedded and Ubiquitous Computing (EUC '05), Nagasaki, Japan, December 6--9, 2005.
  131. H. Okamura and T. Dohi,“Performance evaluation of power-aware communication network devices,”was presented at The 2005 IFIP International Conference on Embedded and Ubiquitous Computing (EUC '05), Nagasaki, Japan, December 6--9, 2005.
  132. T. Dohi,“Optimal inspection strategies and thier computational aspect: survey and application,”was presented at International Conference on Reliability and Safety Engineering (ICNCRESE 2005), Bhubaneswar, India, December 21--23, 2005 (invited talk).
  133. T. Dohi, H. Suzuki and S. Osaki,“Transient cost analysis of non-Markovian software systems with rejuvenation,”was presented at International Conference on Reliability and Safety Engineering (ICNCRESE 2005), Bhubaneswar, India, December 21--23, 2005.
  134. H. Okamura, M. Ito and T. Dohi,“A subordinated Markov chain model for assessing software safety,”was presented at International Conference on Reliability and Safety Engineering (ICNCRESE 2005), Bhubaneswar, India, December 21--23, 2005.
  135. H. Eto and T. Dohi,“Analysis of a service degradation model with preventive rejuvenation,”was presented at 3rd International Service Availability Symposium (ISAS 2006), Helsinki, Finland, May 15--16, 2006.
  136. T. Dohi, N. Kaio and S. Osaki,“Optimal (T, S)-policies in a discrete-time opportunity-based age replacement: an empirical study,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  137. K. Iwamoto, T. Dohi and N. Kaio,“Discrete repair-cost limit replacement policies,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  138. K. Iwamoto, T. Maruo, H. Okamura and T. Dohi,“Aperiodic optimal checkpoint sequence under steady-state system availability criterion,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  139. T. Ishii, T. Fujiwara and T. Dohi,“Bivariate extension of software reliability modeling with number of test cases,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  140. H. Okamura and T. Dohi,“Software reliability modeling based on mixed Poisson distributions,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  141. K. Rinsaka and T. Dohi,“Estimating the optimal software rejuvenation schedule with small sample data,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  142. K. Shibata, K. Rinsaka and T. Dohi,“Incorporating dynamic software metrics data in software reliability assessment,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  143. H. Goto, H. Okamura and T. Dohi,“A note on parameter estimation for phase-type distribution in canonical form,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  144. K. Tateishi, H. Okamura and T. Dohi,“Transient analysis of Internet-worm propagation based on simple birth-and-death processes,”was presented at 2006 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2006), Busan, Korea, August 24--25, 2006.
  145. K. Rinsaka, K. Shibata and T. Dohi,“Proportional intensity-based software reliability modeling with time-dependent metrics,”was presented at The 30th Annual International Computer Software and Applications Conference (COMPSAC 2006), Chicago, USA, September 18--21, 2006.
  146. T. Dohi, T. Ozaki and N. Kaio,“Optimal sequential checkpoint placement with equality constraints,”was presented at The 2nd IEEE International Symposium on Dependable Autonomic and Secure Computing (DASC'06), Indianapolis, USA, September 29--October 1, 2006.
  147. T. Ando, H. Okamura and T. Dohi,“Estimating Markov modulated software reliability models via EM algorithm,”was presented at The 2nd IEEE International Symposium on Dependable Autonomic and Secure Computing (DASC'06), Indianapolis, USA, September 29--October 1, 2006.
  148. H. Okamura, H. Furumura and T. Dohi,“On the effect of fault removal in software testing --- Bayesian reliability estimation approach ---,”was presented at The 17th International Symposium on Software Reliability Engineering (ISSRE'06), Raleigh, USA, November 6--11, 2006.
  149. H. Okamura and T. Dohi,“Building phase-type software reliability models,”was presented at The 17th International Symposium on Software Reliability Engineering (ISSRE'06), Raleigh, USA, November 6--11, 2006.
  150. K. Shibata, K. Rinsaka and T. Dohi,“Metrics-based software reliability models using non-homogeneous Poisson processes,”was presented at The 17th International Symposium on Software Reliability Engineering (ISSRE'06), Raleigh, USA, November 6--11, 2006.
  151. H. Okamura, T. Sakoh and T. Dohi,“Variational Bayesian approach for exponential software reliability model,”was presented at 10th IASTED International Conference on Software Engineering and Applications, Dallas, USA, November 13--15, 2006.
  152. H. Ishii and T. Dohi,“Two-dimensional software reliability modeling,”was presented at 12th Pacific Rim International Symposium on Dependable Computing (PRDC'06), Riverside, USA, December 18--20, 2006.
  153. T. Dohi, N. Kaio and S. Osaki,“Stochastic profit models under repair-limit replacement program,”will be presented at 2007 International Workshop on Recent Advances in Stochastic Operations Research (RASOR'07), Nagoya, Japan, March, 5--6, 2007.
  154. K. Rinsaka and T. Dohi,“Effective algorithms for the optimal software rejuvenation schedule under censoring,”will be presented at 2007 International Workshop on Recent Advances in Stochastic Operations Research (RASOR'07), Nagoya, Japan, March, 5--6, 2007.
  155. H. Okamura, T. Sakoh and T. Dohi,“A note on Markov chain Monte Carlo for software reliability models with group data,”will be presented at 2007 International Workshop on Recent Advances in Stochastic Operations Research (RASOR'07), Nagoya, Japan, March, 5--6, 2007.
  156. K. Rinsaka and T. Dohi,“A faster estimation algorithm for periodic preventive rejuvenation schedule maximizing system availability,”was presented at The 4th International Service Availability Symposium (ISAS 2007), Durham, New Hampshire, USA, May, 21--22, 2007.
  157. H. Okamura, M. Grottke, T. Dohi and K. S. Trivedi,“Variational Bayesian approach for interval estimation of NHPP-based software reliability models,”was presented at The International Conference on Dependable Systems and Networks (DSN-2007), Edinburgh, UK, June, 25--28, 2007.
  158. H. Okamura and T. Dohi,“Confidence intervals of software release time based on Bayesian estimation,”was presented at 5th International Conference on Mathematical Methods in Reliability -- Methodology and Practice (MMR-2007), Glasgow, UK, July, 1--4, 2007.
  159. K. Rinsaka, K. Shibata and T. Dohi,“Empirical stopping rule for testing a software - theory and application -,”was presented at 5th International Conference on Mathematical Methods in Reliability -- Methodology and Practice (MMR-2007), Glasgow, UK, July, 1--4, 2007.
  160. N. Shibata, K. Iwamoto, T. Dohi and N. Kaio,“Estimating discrete-time stochastic profit models with preventive/corrective maintenance,”was presented at 5th International Conference on Mathematical Methods in Reliability -- Methodology and Practice (MMR-2007), Glasgow, UK, July, 1--4, 2007.
  161. L. Zhang, H. Okamura and T. Dohi,“Performance evaluation for automatic protection switching in CDMA-TDD wireless communication system,”was presented at The 12th International Conference on Human-Computer Interaction (HCI'07), Beijing, China, July 22 --27, 2007.
  162. T. Ishii, T. Dohi and H. Okamura,“Bivariate software fault-detection models,”was presented at 31st Annual International Computer Software and Applications Conference (COMPSAC 2007), Beijing, China, July 24 --27, 2007.
  163. H. Okamura, Y. Kamahara and T. Dohi,“Estimating Markov-modulated compound Poisson process,”was presented at 2nd International Conference on Performance Evaluation Methodologies and Tools (VALUETOOLS 2007), Nantes, France, October 23--25, 2007.
  164. K. Rinsaka and T. Dohi,“Non-parametric predictive inference of preventive rejuvenation schedule in operational software systems,”was presented at 18th International Symposium on Software Reliability Engineering (ISSRE'07), Trollhattan, Sweden, November 5--9, 2007.
  165. H. Okamura, K. Tateishi and T. Dohi,“Statistical inference of computer virus propagation using non-homogeneous Poisson processes,”was presented at 18th International Symposium on Software Reliability Engineering (ISSRE'07), Trollhattan, Sweden, November 5--9, 2007.
  166. K. Shibata, K. Rinsaka and T. Dohi,“PISRAT: Proportional intensity-based software reliability assessment tool,”was presented at 13th Pacific Rim International Symposium on Dependable Computing (PRDC'07), Melbourne, Australia, December 17--19, 2007.
  167. K. Shibata, K. Rinsaka, T. Dohi and H. Okamura, “Quantifying software maintainability based on a fault-detection/correction model,”was presented at 13th Pacific Rim International Symposium on Dependable Computing (PRDC'07), IEEE Computer Society Press, Melbourne, Australia, December 17--19, 2007.
  168. T. Uemura and T. Dohi,“ Quantitative evaluation of intrusion tolerant systems subject to DoS attacks via semi-Markov cost models,”was presented at The 2nd International Workshop on Trustwortiness, Reliability and Services in Ubiquitous and Sensor Networks (TRUST 2007), in conjunction with The 2007 IFIP International Conference on Embedded and Ubiquitous Computing (EUC 2007), Taipei, Taiwan, Decembder 17--20, 2007.
  169. T. Uemura and T. Dohi,“Optimizing security measures in an intrusion tolerant database system,”was presented at 5th International Service Availability Symposium (ISAS 2008), Tokyo, Japan, May 19--21, 2008.
  170. H. Okamura and T. Dohi,“Analysis of a software system with two failure modes: rejuvenation, restoration and checkpointing,”was presented at 5th International Service Availability Symposium (ISAS 2008), Tokyo, Japan, May 19--21, 2008.
  171. H. Eto, T. Dohi and J. Ma,“Simulation-based optimization approach for software cost model with rejuvenation,”was presented at The 5th International Conference on Autonomic and Trusted Computing (ATC 2008), Oslo, Norway, June 23--25, 2008.
  172. T. Dohi and S. Osaki, “Estimating renewal functions: a neural network-based approach,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  173. L. Z. Jin and T. Dohi, “How good is gamma process modeling for software reliability assessment,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  174. T. Uemura, T. Dohi and N. Kaio, “Availability modeling of an intrusion tolerant system with preventive maintenance,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  175. T. Dohi, N. Shibata and N. Kaio, “Estimating an economic testing policy in discrete-time burn-in circumstance,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  176. Y. Yamaguchi, H. Okamura and T. Dohi,“Estimating a mixture of Erlang distributions based on variational Bayes,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  177. H. Okamura and T. Dohi,“A repair-limit replacement policy with retry,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  178. K. Rinsaka and T. Dohi,“Adaptive software rejuvenation schedule based on non-parametric predictive inference: an expected cost model,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  179. K. Rinsaka, Y. Sakai and T. Dohi,“Latent class analysis model for cyber-attack detection,”will be presented at 2008 Asian International Workshop on Advanced Reliability Modeling (AIWARM 2008), Taichung, Taiwan, October 23-25, 2008.
  180. H. Okamura and T. Dohi, “Hyper-Erlang software reliability model,”will be presented at 14th Pacific Rim International Symposium on Dependable Computing (PRDC'08), Taipei, Taiwan, December 15-17, 2008.
  181. T. Ishii and T. Dohi, “A new paradigm for software reliability modeling -- from NHPP to NHGP -- ,”will be presented at 14th Pacific Rim International Symposium on Dependable Computing (PRDC'08), Taipei, Taiwan, December 15-17, 2008.

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    E-mail: Tadashi Dohi