Tumor-immune system analysis code situation, relationship with real states and its automatic control (Theory of Biomathematics and Its Applications XIV : Modelling and Analysis for Structured Population Dynamics and its Applications)

Tumorimmune system interaction can be expressed by eigen-value problem. Then if the state of eigen-value = 1 exist actually, the effect of the state is thought to be big for the deletion of tumor. So here, the mathematical existence of the state was shown by simulation. Moreover, the state of eigen-value = 1 seemes to be necessary when the proliferation rate of a tumor is high. This is discussed. To know how tumor-immune system works automatically is important, moreover the state of eigen-value = 1 has an automatic control function to a certam extent. So what are necessary additionally is discussed

In cut tail reproduction model, its reformation according to Homeotic genes, tumor production and its detection by immune system (Theory of Biomathematics and its Applications XIII : Modeling and Analysis for Discrete and Continuous Models)

I already made a cut tail reproduction model where the tail cut can be not only reproduced, but alsoeach cell in the tail has its own positional value. It is known that the distribution order of Homeotic genestends to be the same with that of the parts of the organ like the tail here each of which is expressed by some of the genes. So the model is reformed to be able to meet this condition. Then through this modification, the model seems to approach to a more realistic situation. When a solid tumor begins to form in the model, theirtumor cells are thoughtto prohferate losmg their stability beyond a few condrtions which make the stability for healthy cells. In this case, it is seen more clearly that the tumor cells will be inhibited by the shape violation in the model. Moreover, the separation of the information in the tail formation into the shape and the scale can be seen like in the memorization of the brain

Shear strength and cracking behavior of reinforced concrete nonstructural walls

Recent Japanese earthquakes have severely damaged the nonstructural walls of many buildings. While nonstructural walls do not influence the seismic performance of a building, this damage can still sometimes cause buildings to be demolished or render their continued use impossible. Therefore, it is important that seismic designs take the seismic properties of nonstructural walls into consideration. Shear loading tests and FE analysis were conducted to investigate this phenomenon, which showed that shear strength decreased and crack width increased with wider rebar spacing. The FE analysis indicated that the discrete crack model evaluated the test results more adequately than the smeared crack model. In addition, the stress distribution was localized with wider rebar spacing. Therefore, it is thought that the shear strength decreased. Finally, a simple crack width prediction method was proposed. With this method, the rebar strain was calculated using the horizontal deformation of the walls. Using this method, the crack width could be reasonably estimated. It is believed that these findings will be useful for designing nonstructural walls with improved seismic performance