Net worth ratio and financial instability

In order to better understand relationships between the real economy and financial economy, it is necessary to formulate a model of financing. New Keynesian theory emphasizes that a firm's net worth influences investment decisions and business cycles under an imperfect capital market. We have constructed a dynamic model from the standpoint of post Keynesian economics. We incorporate a dynamic equation of a firms net worth ratio and investigate financial factors, which give rise to economic instability. Our results demonstrate that a steady state can be a saddle point when the dividend rate is low and the banks lending reaction to the net worth ratio is more elastic than investment reaction. When the steady state is the saddle, the change in the basic discount rate is likely to shift the economy from an unstable path to a convergence path. Financial policy has a stabilizing effect in the long-run as well as a positive effect in the short-run

Study on Effects of the Density Current Generator by Experiment and Measurement

The density current generator (Manufacturer: Nakashima Propeller Co., Ltd., Patent owner: Hitachi Metals, Ltd.) is designed to generate vertical circulation over a wide water area harnessing the density current effect. We present some experimental results that we obtained using a float equipped with a GPS unit to study water flows generated by a density current generator unit set in S-Reservoir in Okayama Prefecture. We also present some measured results concerning the water temperature around the unit. We discuss its effects observing the experimental results and the measured results

A new method of determining the non-empirical effective pair potential functions

Chemical phenomena are drastically changed by transportation from gas phase to solution, and incorporation of the solvation effects into chemical models has become of great interest for a few decades1-5. Among such methods, molecular simulations such as Monte Carlo(MC) and molecular dynamics(MD) simulations which deal with a large number of solvent molecules are widely used. In these methods, a potential function(PF) describes the forse field of the system and its accuracy determines the reliability of the simulation. An ab initio MD method using density functional theory as a force field6 is a hopeful method but its vast computational costs is critical. So, the PF was widely used as a force field in the simulations. There are two ways to determine the intermolecular PF. One is an empirical method ･･･Thesis (Ph. D. in Science)--University of Tsukuba, (A), no. 2311, 2000.3.24Bibliography: p. 76-81Titlpage,Contents -- Chapter 1.Introduction -- Chapter 2.Methods -- Chapter 3.Application to the ionic fragmentation of t-BuCI in aqueous solution -- Chapter 4.Application to the intramolecular proton transfer of glycine in aqueous solution -- Chapter 5.Conclusion -- Acknowledgement -- Bibliograph

Observation of the thermosiphon effect in the circulation of liquid nitrogen in HTS cable cooling system

AbstractIt is traditionally considered that superconducting technology is just the way that will help to overcome the energy crisis and improve the environmental safety of the electricity production. However, real achievements in this field still insufficient to build commercial long power transmission lines. In particular, cooling systems constructed using expensive coolant circulation pumps have to be improved. Our previous calculations show that the use of a thermosiphon effect may reduce both the heat load and the required coolant circulation pump power and, ideally, would completely abandon the forced circulation. Direct experimental verification of this approach has been carried out at the new 200-meter HTS DC experimental facility of the Chubu University. The thermosiphon effect was clearly observed in satisfactory agreement with theory, although the change in elevation of the cryopipe was small. Our results will be used to design an effective HTS cable cooling system based on natural circulation of the coolant