2 citations · 3 across the 8 of their papers we have counts for
8 papers
Application and Extension of Mean-Field Theory such as SIR to Discuss the Non-Mean Field Problem of COVID-19
Hiroshi Isshiki, Masao Namiki
The concept of the effective infection opportunity population (EIOP) was incorporated into the SIQR model, and it was assumed that this EIOP would change with the spread of infecti…
Effective Infection Opportunity Population (EIOP) Hypothesis in Applying SIR Infection Theory
Hiroshi Isshiki, Masao Namiki, Takeshi Kinoshita +1
The SIR infection theory initiated by Kermack-Mckendrick in 1927 discusses the infection in an isolated population with uniform properties such as the uniform population distributi…
Genetic Drift and Mutation
Hiroshi Isshiki
In genetic drift of small population, it is well known that even when the ratio of alleles is 0.5, specific genes are fixed in or disappear from the population. It seems the reason…
Generation of Curvilinear Coordinates
Hiroshi Isshiki, Daisuke Kitazawa
The authors have discussed the method and merit of introducing the curvilinear coordinates into numerical analysis and have shown some numerical examples. However, they used analyt…
Space-time-unified GIRM (Generalized Integral Representation Method) for unsteady advective diffusion
Hiroshi Isshiki, Daisuke Kitazawa
The Generalized Integral Representation Method (GIRM) for Space-Time-Separated Method (STSM) and Space-Time-Unified Method (STUM) are discussed. STSM and STUM give explicit and imp…
Introduction of Curvilinear Coordinates into Numerical Analysis
Hiroshi Isshiki, Daisuke Kitazawa
Introduction of curvilinear coordinates might be very convenient in many cases. Theoretically, tensor analysis would be most suited. However, tensor notation can't be used in numer…
Error Estimation of Difference Operators on Irregular Nodes
Hiroshi Isshiki, Takafumi Kawamura, Daisuke Kitazawa
Error estimation of difference operators on irregular nodes is discussed. We can obtain the similar estimates of the errors. However, the error estimate for the difference operator…
Mathematical base of Difference Operator of Particle Method
Hiroshi Isshiki, Daisuke Kitazawa
Mathematical base of difference operators in Moving Particle Semi-implicit method (MPS) are not given sufficiently in contrast to Smooth Particle Hydrodynamics method (SPH). Iribe…