Ushio Sumita

2.3k total citations
118 papers, 1.6k citations indexed

About

Ushio Sumita is a scholar working on Management Information Systems, Management Science and Operations Research and Statistics and Probability. According to data from OpenAlex, Ushio Sumita has authored 118 papers receiving a total of 1.6k indexed citations (citations by other indexed papers that have themselves been cited), including 46 papers in Management Information Systems, 46 papers in Management Science and Operations Research and 38 papers in Statistics and Probability. Recurrent topics in Ushio Sumita's work include Advanced Queuing Theory Analysis (40 papers), Probability and Risk Models (33 papers) and Statistical Distribution Estimation and Applications (21 papers). Ushio Sumita is often cited by papers focused on Advanced Queuing Theory Analysis (40 papers), Probability and Risk Models (33 papers) and Statistical Distribution Estimation and Applications (21 papers). Ushio Sumita collaborates with scholars based in United States, Japan and Saudi Arabia. Ushio Sumita's co-authors include J. George Shanthikumar, Julian Keilson, Masaaki Kijima, Yasushi Masuda, Idriss Bedja, Ashraful Islam, Paulo Góes, Peter Kubat, Olivia R. Liu Sheng and Naoto Kaio and has published in prestigious journals such as European Journal of Operational Research, Energy Policy and IEEE Access.

In The Last Decade

Ushio Sumita

103 papers receiving 1.5k citations

Peers

Ushio Sumita
James C. Fu Canada
Wolfgang Stadje Germany
Cyrus Derman United States
Colm Art O’Cinneide United States
Bruno Tuffin France
J. D. Esary United States
Perwez Shahabuddin United States
Mark Anthony McComb United States
Upendra Dave India
Philip J. Boland Ireland
James C. Fu Canada
Ushio Sumita
Citations per year, relative to Ushio Sumita Ushio Sumita (= 1×) peers James C. Fu

Countries citing papers authored by Ushio Sumita

Since Specialization
Citations

This map shows the geographic impact of Ushio Sumita's research. It shows the number of citations coming from papers published by authors working in each country. You can also color the map by specialization and compare the number of citations received by Ushio Sumita with the expected number of citations based on a country's size and research output (numbers larger than one mean the country cites Ushio Sumita more than expected).

Fields of papers citing papers by Ushio Sumita

Since Specialization
Physical SciencesHealth SciencesLife SciencesSocial Sciences

This network shows the impact of papers produced by Ushio Sumita. Nodes represent research fields, and links connect fields that are likely to share authors. Colored nodes show fields that tend to cite the papers produced by Ushio Sumita. The network helps show where Ushio Sumita may publish in the future.

Co-authorship network of co-authors of Ushio Sumita

This figure shows the co-authorship network connecting the top 25 collaborators of Ushio Sumita. A scholar is included among the top collaborators of Ushio Sumita based on the total number of citations received by their joint publications. Widths of edges represent the number of papers authors have co-authored together. Node borders signify the number of papers an author published with Ushio Sumita. Ushio Sumita is excluded from the visualization to improve readability, since they are connected to all nodes in the network.

All Works

20 of 20 papers shown
1.
Sumita, Ushio, et al.. (2014). Development of computational algorithms for pricing European bond options under the influence of macro-economic conditions. Applied Mathematics and Computation. 251. 453–468.
2.
Kotani, Masato & Ushio Sumita. (2013). Structural Analysis of “National Brand vs. Store Brand” with Stochastic Demands. 8(1). 1–33. 1 indexed citations
3.
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Takahashi, Kazuki & Ushio Sumita. (2011). Structural Analysis of Two Person Game with Mixed Strategy for Delivery Services : How to Decide Service Area and Pricing Strategy(Theory and Methodology). 61(6). 313–324.
6.
Sumita, Ushio, et al.. (2011). Application of the Collateralized Debt Obligation (CDO) Approach for Managing Inventory Risk in the Classical Newsboy Problem. 6(1). 35–76.
7.
Sumita, Ushio, et al.. (2011). Pricing collateralized debt obligations with Markov-modulated Poisson processes. Quantitative Finance. 11(12). 1761–1771.
8.
Sumita, Ushio, et al.. (2006). STOCHASTIC ANALYSIS OF NUMBER OF CORPORATIONS IN A MARKET DERIVED FROM STRATEGIC POLICIES OF INDIVIDUAL CORPORATIONS FOR MARKET ENTRY AND RETREAT. Journal of the Operations Research Society of Japan. 49(1). 1–18.
9.
10.
Sumita, Ushio, Jun‐ya Gotoh, & Hui Jin. (2003). Numerical exploration of dynamic behavior of the ornstein-uhlenbeck process via ehrenfest process approximation. Terrestrial Environment Research Center (University of Tsukuba). 2004. 194–195. 6 indexed citations
11.
Sumita, Ushio, et al.. (1995). Analysis of Markov renewal shock models. Journal of Applied Probability. 32(3). 821–831. 26 indexed citations
12.
Sumita, Ushio & Masaaki Kijima. (1991). THEORY AND ALGORITHMS OF THE LAGUERRE TRANSFORM, PART II: ALGORITHM. Journal of the Operations Research Society of Japan. 34(4). 449–477. 4 indexed citations
13.
Shanthikumar, J. George & Ushio Sumita. (1989). Modified Lindley process with replacement: dynamic behavior, asymptotic decomposition and applications. Journal of Applied Probability. 26(3). 552–565. 3 indexed citations
14.
Sumita, Ushio, J. George Shanthikumar, & Yasushi Masuda. (1987). Analysis of fault tolerant computer systems. Microelectronics Reliability. 27(1). 65–78. 29 indexed citations
15.
Keilson, Julian & Ushio Sumita. (1986). A general Laguerre transform and a related distance between probability measures. Journal of Mathematical Analysis and Applications. 113(1). 288–308. 5 indexed citations
16.
Shanthikumar, J. George & Ushio Sumita. (1986). ON G/G/1 QUEUES WITH LIFO-P SERVICE DISCIPLINE. Journal of the Operations Research Society of Japan. 29(3). 220–231. 21 indexed citations
17.
Kubat, Peter & Ushio Sumita. (1985). Buffers and backup machines in automatic transfer lines. International Journal of Production Research. 23(6). 1259–1270. 21 indexed citations
18.
Shanthikumar, J. George & Ushio Sumita. (1985). On the busy-period distributions ofM/G/1/Kqueues by state-dependent arrivals and FCFS/LCFS-P service disciplines. Journal of Applied Probability. 22(4). 912–919. 13 indexed citations
19.
Shanthikumar, J. George & Ushio Sumita. (1984). Distribution properties of the system failure time in a general shock model. Advances in Applied Probability. 16(2). 363–377. 40 indexed citations
20.
Sumita, Ushio. (1984). On conditional passage time structure of birth-death processes. Journal of Applied Probability. 21(1). 10–21. 16 indexed citations

Rankless uses publication and citation data sourced from OpenAlex, an open and comprehensive bibliographic database. While OpenAlex provides broad and valuable coverage of the global research landscape, it—like all bibliographic datasets—has inherent limitations. These include incomplete records, variations in author disambiguation, differences in journal indexing, and delays in data updates. As a result, some metrics and network relationships displayed in Rankless may not fully capture the entirety of a scholar's output or impact.

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