5 citations · 12 across the 7 of their papers we have counts for
8 papers
Mathematical model for sustainable fisheries resource management accounting for size spectrum
Hidekazu Yoshioka, Yumi Yoshioka, Motoh Tsujimura +1
This paper proposes a novel modelling and control framework for growth models that incorporate a size spectrum in conjunction with numerical computation and extensive field surveys…
Stochastic volatility model with long memory for water quantity-quality dynamics
Hidekazu Yoshioka, Yumi Yoshioka
Water quantity and quality are vital indices for assessing fluvial environments. These indices are highly variable over time and include sub-exponential memory, where the influence…
Non-Markovian superposition process model for stochastically describing concentration-discharge relationship
Hidekazu Yoshioka, Yumi Yoshioka
Concentration-discharge relationship is crucial in river hydrology, as it reflects water quality dynamics across both low- and high-flow regimes. However, its mathematical descript…
Fishery resources management
Hidekazu Yoshioka, Motoh Tsujimura, Yumi Yoshioka
We consider management of the fish species Plecoglossus altivelis altivelis, a major inland fishery resource in Japan playing important roles from economic, cultural, and recreatio…
Generalized pair-wise logit dynamic and its connection to a mean field game: theoretical and computational investigations focusing on resource management
Hidekazu Yoshioka, Motoh Tsujimura
Logit dynamics are evolution equations that describe transitions to equilibria of actions among many players. We formulate a pair-wise logit dynamic in a continuous action space wi…
A rational logit dynamic for decision-making under uncertainty: well-posedness, vanishing-noise limit, and numerical approximation
Hidekazu Yoshioka, Motoh Tsujimura, Yumi Yoshioka
The classical logit dynamic on a continuous action space for decision-making un-der uncertainty is generalized to the dynamic where the exponential function for the softmax part ha…
Assessing fluctuations of long-memory environmental variables based on the robustified dynamic Orlicz risk
Hidekazu Yoshioka, Yumi Yoshioka
Environmental variables that fluctuate randomly and dynamically over time, such as water quality indices, are considered to be stochastic. They exhibit sub-exponential memory struc…
Orlicz regrets to consistently bound statistics of random variables with an application to environmental indicators
Hidekazu Yoshioka, Yumi Yoshioka
Evaluating environmental variables that vary stochastically is the principal topic for designing better environmental management and restoration schemes. Both the upper and lower e…