Geometric decay of the steady-state probabilities in a quasi-birth-and-death process with a countable number of phases

Y Takahashi, K Fujimoto, N Makimoto - Stochastic Models, 2001 - Taylor & Francis
A sufficient condition is proved for geometric decay of the steady-state probabilities in a
quasi-birth-and-death process having a countable number of phases in each level. If there is a …

Relationship between local and scientific names of fishes in Lake Malawi/Nyasa

…, J Ingainga, N Makimoto… - African Study …, 2001 - repository.kulib.kyoto-u.ac.jp
An interview survey was carried out in 20 Malawian lakeside villages from 1999 to 2000 to
clarify the relationship between local and scientific names of the fishes in Lake Malawi/Nyasa. …

Capacity market and investments in power generations: Risk-averse decision-making of power producer

N Makimoto, R Takashima - Energies, 2023 - mdpi.com
The penetration of power generations from renewable energy sources into the power
market has a significant impact on the capacity factor of existing power generations. This is …

Optimal mortgage refinancing with regime switches

T Kimura, N Makimoto - Asia-Pacific Financial Markets, 2008 - Springer
A model of rational mortgage refinancing is developed where the drift and volatility of interest
rate process switch between two regimes. Because of the possibility of a regime shift, the …

Quasi-stationary distributions in a PH/PH/c queue

N Makimoto - Stochastic Models, 1993 - Taylor & Francis
Explicit representations of the quasi-stationary (QS) distributions in a multi-server phase-type
queue are obtained by extending the results for a single server queue in Kijima (1993). …

Unforced control of fishing activities as a result of coexistence with underwater protected areas in Lake Malawi National Park, East Africa

T Sato, N Makimoto, D Mwafulirwa, S MIZOIRI - Tropics, 2008 - jstage.jst.go.jp
We made a detailed study of fishing activities by artisanal fishermen using gill nets and
ecology of their target catfishes in 2000 and 2001 in Lake Malawi National Park in east Africa, …

Time series prediction with lstm networks and its application to equity investment

K Matsumoto, N Makimoto - Advanced Studies of Financial Technologies …, 2020 - Springer
Forecasting financial time series has been traditional and important theme for market analysis
and investment strategy. However, it is not easy to capture the statistical characteristics of …

A unified approach to gi/m (n)/l/k and m (n)/g/1/k queues via finite quasi-birth-death processes

M Kijima, N Makimoto - Stochastic Models, 1992 - Taylor & Francis
In this paper, we provide a unified approach to study GI/M/LK Queses with state-dependent
services and M/G/1/K Queueswith state dependent arrivals First,we describe such queses in …

Asymptotic properties of stationary distributions in two-stage tandem queueing systems

K Fujimoto, Y Takahashi, N Makimoto - Journal of the Operations …, 1998 - jstage.jst.go.jp
Tandem queueing systems are basic models inthe theory of queues and havebeenstudied
for a Iongtime. However, becauseef complexities of theirsfochastic structure, theirproperties …

Computation of the quasi-stationary distributions inM(n)/GI/1/K andGI/M(n)/1/K queues

M Kijima, N Makimoto - Queueing systems, 1992 - Springer
In this paper, we provide numerical means to compute the quasi-stationary (QS)
distributions inM/GI/1/K queues with state-dependent arrivals andGI/M/1/K queues with state-dependent …