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Correlated Mutivariate Shock Models Associated with a Renewal Sequence and its Application to Analysis of Browsing Behavior of Internet Users
Sumita, Ushio; Zuo, Jinshui - In: Journal of the Operations Research Society of Japan : JORSJ 53 (2010) 2, pp. 119-136
Persistent link: https://www.econbiz.de/10008436917
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Optimal internal pricing and capacity planning for service facility with finite buffer
Sumita, Ushio; Masuda, Yasushi; Yamakawa, Shigetaka - In: European journal of operational research : EJOR 128 (2001) 1, pp. 192-205
Persistent link: https://www.econbiz.de/10006660408
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On a Generalized M-G-1 Queue with Service Degradation-Enforcement
Igaki, Nobuko; Sumita, Ushio; Kowada, Masashi - In: Journal of the Operations Research Society of Japan : JORSJ 41 (1998) 3, pp. 415-429
Persistent link: https://www.econbiz.de/10006732438
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Necessary and Sufficient Conditions for Global Geometric Convergence of Block Gauss-Seidel Iteration Algorithm Applied to Markov Chains
Sumita, Ushio; Igaki, Nobuko - In: Journal of the Operations Research Society of Japan : JORSJ 40 (1997) 3, pp. 283-293
Persistent link: https://www.econbiz.de/10006734998
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Dynamic Analysis of a Reward Process Defined on a Cyclic Renewal Process with Applications to Preventive Maintenance Problems
Sumita, Ushio; Takahashi, Kazuki - In: Journal of the Operations Research Society of Japan : JORSJ 52 (2009) 3, pp. 283-307
Persistent link: https://www.econbiz.de/10008344237
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A New Approach for Computing Option Prices of the Hull-White Type with Stepwise Reversion and Volatility Functions
Jin, Hui; Gotoh, Jun-Ya; Sumita, Ushio - In: The journal of derivatives : the official publication … 15 (2007) 1, pp. 67-85
Persistent link: https://www.econbiz.de/10007871189
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Optimal threshold analysis of segmentation methods for identifying target customers
Mizuno, Makoto; Saji, Akira; Sumita, Ushio; Suzuki, Hideo - In: European journal of operational research : EJOR 186 (2008) 1, pp. 358-379
Persistent link: https://www.econbiz.de/10007895453
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Stochastic Analysis of Number of Corporations in a Market Derived from Strategic Policies of Individual Corporations for Market Entry and Retreat
Sumita, Ushio; Ise, Tsunehisa; Yonezawa, Koichi - In: Journal of the Operations Research Society of Japan : JORSJ 49 (2006) 1, pp. 1-18
Persistent link: https://www.econbiz.de/10007268689
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On pulse analysis of Gx-G-(infinity) queues in tandem with correlated service times
Sumita, Ushio; Masuda, Yasushi - In: Computers & industrial engineering : CAIE ; an … 27 (1994) 1-4, pp. 413-416
Persistent link: https://www.econbiz.de/10005999882
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Credit risk model with contagious default dependencies affected by macro-economic condition
Takada, Hideyuki; Sumita, Ushio - In: European journal of operational research : EJOR 214 (2011) 2, pp. 365-380
Persistent link: https://www.econbiz.de/10009166451