U. Sumita

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Renewal characterization of Markov modulated Poisson processes

M. Neuts, U. Sumita, Yoshitaka Takahashi, 1989 .

ANALYSIS OF MARKOV RENEWAL SHOCK MODELS

U. Sumita, N. Igaki, M. Kowada, 1995 .

A class of correlated cumulative shock models

J. Shanthikumar, U. Sumita, 1985 .

The bilateral Laguerre transform

J. Keilson, U. Sumita, W. Nunn, 1981 .

The Laguerre Transform.

J. Keilson, U. Sumita, W. Nunn, 1980 .

Convex ordering of sojourn times in single-server queues: extremal properties of FIFO and LIFO service disciplines

J. Shanthikumar, U. Sumita, 1987, Journal of Applied Probability.

Approximations for the time spent in a dynamic job shop with applications to due-date assignment

J. Shanthikumar, U. Sumita, 1988 .

Dynamic Performance Evaluation of Communication/Computer Systems with Highly Reliable Components

U. Sumita, Y. Masuda, P. Kubat, 1988, Probability in the Engineering and Informational Sciences.

Classes of probability density functions having Laplace transforms with negative zeros and poles

Ushio Sumita, Yasushi Masuda, U. Sumita, 1987, Advances in Applied Probability.

On the busy-period distributions of M / G /1/ K queues by state-dependent arrivals and FCFS/LCFS-P service disciplines

Ushio Sumita, J. George Shanthikumar, J. Shanthikumar, 1985 .

The matrix Laguerre transform

Ushio Sumita, U. Sumita, 1984 .

THE DEPLETION TIME FOR M/IG/1 SYSTEMS AND A

J. Keilson, U. Sumita, Related Limit Theorem, 1983 .

The depletion time for M/G/1 systems and a related limit theorem

Ushio Sumita, Julian Keilson, J. Keilson, 1983 .

Uniform stochastic ordering and related inequalities

J. Keilson, U. Sumita, 1982 .

On first passage time structure of random walks

Ushio Sumita, Yasushi Masuda, U. Sumita, 1985 .

NECESSARY AND SUFFICIENT CONDITIONS FOR GLOBAL GEOMETRIC CONVERGENCE OF BLOCK GAUSS-SEIDEL ITERATION ALGORITHM APPLIED TO MARKOV CHAINS

U. Sumita, N. Igaki, Nobuko Igaki, 1997 .

APPLICATION OF THE REPLACEMENT PROCESS APPROACH FOR COMPUTING THE ERGODIC PROBABILITY VECTOR OF LARGE SCALE ROW-CONTINUOUS MARKOV CHAINS

Ushio Sumita, Maria Rieders, U. Sumita, 1990 .

Evaluation of Cumulative Random Shocks Generated from a Semi-Markov Modulated Poisson Process and its Application to Cdo Pricing

U. Sumita, Jia-Ping Huang, 2012 .

NUMERICAL EXPLORATION OF DYNAMIC BEHAVIOR OF ORNSTEIN-UHLENBECK PROCESSES VIA EHRENFEST PROCESS APPROXIMATION( Advanced Planning and Scheduling for Supply Chain Management)

U. Sumita, J. Gotoh, Hui Jin, 2006 .

Lumpability and time reversibility in the aggregation-disaggregation method for large markov chains

Ushio Sumita, Maria Rieders, U. Sumita, 1989 .

Impact of Exercise Behavior on Body Image among Female Fitness Club Members in Japan and South Korea

U. Sumita, Jong-O Choi, 2013 .

Numerical Evaluation of Dynamic Behavior of Ornstein–Uhlenbeck Processes Modified by Various Boundaries and its Application to Pricing Barrier Options

U. Sumita, J. Gotoh, Hui Jin, 2011 .

THEORY AND ALGORITHMS OF THE LAGUERRE TRANSFORM, PART II: ALGORITHM

U. Sumita, M. Kijima, 1991 .

Analysis of value chain coordination via revenue-sharing for improving the expected profits

U. Sumita, Y. Koike, M. Kotani, 2010, 2010 IEEE International Conference on Industrial Engineering and Engineering Management.

The depletion time for M/G/1 systems and a related limit theorem

J. Keilson, U. Sumita, 1983, Advances in Applied Probability.

Aspects of Lagrangian probability distributions

U. Sumita, M. Sibuya, N. Miyawaki, 1994, Journal of Applied Probability.

On limiting behavior of ordinary and conditional first-passage times for a class of birth-death processes

U. Sumita, 1987, Journal of Applied Probability.

Modified Lindley process with replacement: dynamic behavior, asymptotic decomposition and applications

J. Shanthikumar, U. Sumita, 1989, Journal of Applied Probability.

Optimal allocation and backup of computer resources under asymmetric information and incentive incompatibility

William B. Richmond, M. Freimer, U. Sumita, 1996 .

A class of correlated cumulative shock models

J. Shanthikumar, U. Sumita, 1985, Advances in Applied Probability.

General shock models associated with correlated renewal sequences

J. Shanthikumar, U. Sumita, 1983, Journal of Applied Probability.

Analysis of Collateralized Debt Obligation Scheme Applied to Newsboy Problem

U. Sumita, S. Ohashi, R. Isogai, 2012 .

On Non-Existence of Nash Equilibrium of an M Person Game with Pure Strategy for Energy Supply

U. Sumita, Kazuki Takahashi, 2011 .

Structural Analysis of Two Person Game with Mixed Strategy for Public Utility Supply

U. Sumita, Kazuki Takahashi, 2011 .

Structural Analysis of Two Person Game with Mixed Strategy for Energy Supply

U. Sumita, Kazuki Takahashi, 2011 .

On non-existence of Nash equilibrium of M person game with pure strategy for delivery services

U. Sumita, K. Takahashi, 2009, 2009 IEEE International Conference on Industrial Engineering and Engineering Management.

Analysis of Markov renewal shock models

U. Sumita, M. Kowada, Nobuko Igaki, 1995, Journal of Applied Probability.

Analysis of Interrelationships Among Application Popularity, Application Stability, and Potential Risk in e-WOM

U. Sumita, Umesha Perera, Charolina Ventiana Dewi, 2014 .

Structural Analysis of Two Person Game with Mixed Strategy for Delivery Services : How to Decide Service Area and Pricing Strategy(Theory and Methodology)

U. Sumita, Kazuki Takahashi, 2011 .

Structural analysis of optimal investment strategy for project management via real option approach

U. Sumita, T. Ise, 2003 .

A useful generalization of renewal theory: counting processes governed by non-negative Markovian increments

U. Sumita, M. Kijima, 1986, Journal of Applied Probability.

First passage times and lumpability of semi-Markov processes

U. Sumita, M. Rieders, 1988, Journal of Applied Probability.

THE LAGUERRE TRANSFORM, PART I:THEORY

U. Sumita, Masaaki, Kijima, 2015 .

Numerical Comparison of the Replacement Process Approach with the Aggregation-Disaggregation Algorithm for Row-Continuous Markov Chains*

Ushio Sumita, Maria Rieders, U. Sumita, 2021 .

Development of Parametric Simulation Models for Structural Analysis of Voting Behaviors in Public Referendum

Ushio Sumita, Nobuko Igaki, Mizue Ohe, 2005 .

INSTITUTE OF POCICY AND PLANNING SCIENCES Discussion Paper Series

U. Sumita, 2005 .

Optimal threshold analysis of segmentation methods for identifying target customers

Ushio Sumita, Makoto Mizuno, Akira Saji, 2008, Eur. J. Oper. Res..

On evaluation of dynamic behavior of modified Ornstein-Uhlenbeck processes with various boundaries

U. Sumita, J. Gotoh, Hui Jin, 2011 .

Structural Analysis of First Passage Times of Skip-Free Semi-Markov Processes and Related Limit Theorems

U. Sumita, Atsushi Namikawa, 2008 .

Enhancement of e-commerce via mobile accesses to the Internet

Ushio Sumita, Jun Yoshii, U. Sumita, 2010, Electron. Commer. Res. Appl..

Evaluation of the total time in system in a preempt/resume priority queue via a modified Lindley process

J. Keilson, U. Sumita, Numerical Distributions, 1983, Advances in Applied Probability.

Waiting Time Distribution Response to Traffic Surges Via the Laguerre Transform

U. Sumita, J. Keilson, J. Keilson, 1982 .

A General Software Availability/Reliability Model: Numerical Exploration via the Matrix Laguerre Transform.

Ushio Sumita, J. George Shanthikumar, Yasushi Masuda, 1986 .

Significance Points for Some Tests of Uniformity on the Sphere. Revision.

Ushio Sumita, Julian Keilson, Jon A. Wellner, 1982 .

Development of Marketing Flexibility for e-Commerce by Assessing Impact of Mobile Devices on Sales with Multiple Classes of Customers

Ushio Sumita, Jun Yoshii, U. Sumita, 2016 .

Development of Algorithms for Estimating Apartment Rents in Metropolitan Area Based on a Combined Micro-Macro Approach

U. Sumita, Jun Yoshii, Jia-Ping Huang, 2011 .

ON G/G/1 QUEUES WITH LIFO-P SERVICE DISCIPLINE

Ushio Sumita, J. George Shanthikumar, J. Shanthikumar, 1986 .

Analysis of fault tolerant computer systems

Ushio Sumita, Yasushi Masuda, J. G. Shanthikumar, 1987 .

Development of Enhanced Marketing Flexibility by Optimally Allocating Sales Campaign Days for Maximizing Total Expected Sales

Ushio Sumita, Jun Yoshii, U. Sumita, 2015 .

DYNAMIC ANALYSIS OF A MULTIVARIATE REWARD PROCESS DEFINED ON THE UMCP WITH APPLICATION TO OPTIMAL PREVENTIVE MAINTENANCE POLICY PROBLEMS IN MANUFACTURING

Ushio Sumita, Jia-Ping Huang, U. Sumita, 2013, Probability in the Engineering and Informational Sciences.

Dynamic Analysis of a Unified Multivariate Counting Process and Its Asymptotic Behavior

Ushio Sumita, Jia-Ping Huang, U. Sumita, 2009, Int. J. Math. Math. Sci..

Dynamic Analysis of a Reward Process Defined on a Cyclic Renewal Process with Applications to Preventive Maintenance Problems

Ushio Sumita, Kazuki Takahashi, U. Sumita, 2009 .

On Relationship between Ergodic Sojourn Time and Ergodic Residual Exit Time for Semi-Markov Processes

U. Sumita, Jun Yoshii, 2008 .

A multivariate reward process defined on a semi-Markov process and its first-passage-time distributions

Ushio Sumita, Yasushi Masuda, U. Sumita, 1991, Journal of Applied Probability.

Analysis of a counting process associated with a semi-Markov process: number of entries into a subset of state space

Ushio Sumita, Yasushi Masuda, U. Sumita, 1987, Advances in Applied Probability.

Row-Continuous Finite Markov Chains, Structure and Algorithms.

Ushio Sumita, Julian Keilson, J. Keilson, 1987 .

A statistical approach for determining release time of software system with modular structure

Yasushi Masuda, U. Sumita, N. Miyawaki, 1989 .

Analysis of a new thruway communication system with discrete minimal zones

Ushio Sumita, Hironao Kawashima, Paulo B. Góes, 1992, IEEE Trans. Commun..

Review of recent development: A central limit theorem for random sums of random variables

Ushio Sumita, J. G. Shanthikumar, J. Shanthikumar, 1984 .

Credit risk model with contagious default dependencies affected by macro-economic condition

Ushio Sumita, Hideyuki Takada, U. Sumita, 2011, Eur. J. Oper. Res..

Development of effective marketing strategies for a housing equipment company based on analysis of sales data and sales personnel

U. Sumita, Y. Nakata, Kakunoshin Nishiyama, 2016 .

Distribution properties of the system failure time in a general shock model

Ushio Sumita, J. G. Shanthikumar, J. Shanthikumar, 1984, Advances in Applied Probability.

The Laguerre Transform and a Family of Functions with Nonnegative Laguerre Coefficients

Ushio Sumita, U. Sumita, 1984, Math. Oper. Res..

Evaluation of minimum and maximum of a correlated pair of random variables via the bivariate laguerre transform

Ushio Sumita, Masaaki Kijima, U. Sumita, 1986 .

A general Laguerre transform and a related distance between probability measures

J. Keilson, U. Sumita, 1986 .

On sums of independent logistic and folded logistic variants

Ushio Sumita, U. Sumita, 1983 .

Development of e-Marketing Contract Structure Based on Consumer-Generated Contents and Its Optimal Strategy

Ushio Sumita, Rina Isogai, U. Sumita, 2011 .

Analysis of Query Processing in Distributed Database Systems with Fully Replicated Files: A Hierarchical Approach

Olivia R. Liu Sheng, Ushio Sumita, U. Sumita, 1988, Perform. Evaluation.

Replacement process decomposition for discounted Markov renewal programming

Paul J. Schweitzer, U. Sumita, K. Ohno, 1991, Ann. Oper. Res..

Importance of policy for energy system transformation: Diffusion of PV technology in Japan and Germany

Ushio Sumita, U. Sumita, I. Bedja, 2014 .

A Closed Queueing Network Model to Evaluate the Impact of Recovery Operations on the Performance of Database Servers

Ushio Sumita, Paulo B. Góes, Paulo B. Goes, 1996 .

Application of the Collateralized Debt Obligation (CDO) Approach for Managing Inventory Risk in the Classical Newsboy Problem

U. Sumita, S. Ohashi, R. Isogai, 2011 .

Analysis of software availability/reliability under the influence of hardware failures

Ushio Sumita, Yasushi Masuda, U. Sumita, 1986, IEEE Transactions on Software Engineering.