Ryo Ishida

• Doctor of Philosophy
• Visiting Scholar at Ministry of Finance, Japan

We examine how investors arbitrage the Bitcoin spot and futures markets. Using intraday data of the Chicago Board Options Exchange, we reconstruct the actual arbitrage condition that investors confront. We find that there are few arbitrage profit opportunities in “normal” markets, but large arbitrage profit opportunities arise during Bitcoin market...

At the end of 2017, the Bitcoin price dropped significantly by approximately 70% over the two months. Since the introduction of Bitcoin futures coincided with this market crash, it is said that the new financial instrument might have caused the market crash. The literature states that the futures enabled investors to easily take a short position an...

This paper attempts to investigate how information transparency affects human behavior. Thus, we empirically examine the influence of information disclosure ordinances on the income of mayors and chief executives in local governments in Japan. For the estimation, we use panel data of local governments covering 1999–2010, during which time many loca...

This paper constructs an overlapping generations model to demonstrate how political intervention and interaction in the working and retired generations affect the allocation rate in future-growth-stimulating public investment (e.g., science and technology R&D or education) and the public pension. It also analyzes the possibility of moving to a voti...

In countries confronting the issue of low fertility, as Japan is, dual trends showing higher regional population density associated with lower fertility rates are being confirmed. It is therefore an important theme for analysis to deepen discussions related to reducing regional fertility disparities by increasing fertility through the implementatio...

This study aims to estimate the elasticity of taxable income (ETI) with regard to the net-of-tax rate, precisely in terms of potential for the margin arising from the behavioral response. We use panel data from top Japanese taxpayers in Tokyo during 1986–1989 and focus on the tax policy changes caused by the 1987–1989 comprehensive tax reform, whic...

This paper considers a mechanism where providers of public goods reflect donors f preferences for public goods. When asking individuals and private companies to contribute for a certain public good, it is widely known that the total contributions result in under-provision. Among the many countermeasures for this problem, some fundraisers adopt a me...

Many industrialized countries implement a policy to enhance private donations to public goods, i.e. tax deduction for charitable donation or further aggressive tax credit. There are already many theories supporting such favorable policies for private donations. However, there is another reason why such policies are favorable from the viewpoint of s...

The behavioral response to public disclosure of income tax returns figures prominently in policy debates about its advisability. Although supporters stress that it encourages tax compliance, policy debates proceed in the absence of empirical evidence about this, and any other, claimed behavioral impact. This paper provides the first such evidence b...

This paper analyzes the possibility of improving the efficiency of child benefit programs in an overlapping generations economy that has endogenous fertility and large government debt levels. We derive the conditions for this improvement using Representative-Consumer and Children-for-Representative-Consumers efficiency criteria in the endogenous fe...

We have observed the elastic response of single DNA molecules and visualized it during the collapsing transition induced by trivalent cation, spermidine (SPD). A fluorescent dye, YOYO-1, was used for the visualization. While the contour length of DNA increases as the YOYO concentration increases, the contour length decreases as SPD concentration in...

We observed elastic responses of single DNA molecules and visualized them during the collapsing transition induced by trivalent cation, spermidine (SPD). The force-extension curves show worm-like behavior, force plateau, and stick-release responses depending on SPD concentration. The periodic stick-release responses may reflect the unraveling of to...

この論文は国立情報学研究所の電子図書館事業により電子化されました。 招待講演

この論文は国立情報学研究所の電子図書館事業により電子化されました。 3価陽イオン(スペルミジン)により凝縮した1分子DNAの力学応答を測定するとともに,蛍光色素(YOYO-1)でDNAを可視化し伸張時の脱凝縮過程を観測した.凝縮状態ではDNA上に蛍光強度が高い部位が観測され,その強度は伸張にともない減少する.蛍光強度の減少は,伸張による凝縮部位の脱凝縮を示唆している.また,色素の結合によりDNAの全長は増加するが,スペルミジン濃度の増加にともない再び減少する.これは,1分子DNA上で色素-スペルミジンの対イオン交換が生じていることを示している.