After studying at Keio University (B.A. in Economics, 1981) and at the University of Pennsylvania (M.A. in International Relations, 1982), Yukinobu Kitamura specialized in household saving and bequest behavior for his D.Phil in Economics at the University of Oxford (1989). He then became a Research Assistant at the Institute of Economics and Statistics, University of Oxford (1987–1988) and an Economist at the Organization for Economic Cooperation and Development (OECD) (1988–1991) and at the Bank of Japan (1991－2021). He joined academia as a Guest Associate Professor at Keio University in 1996 and Associate Professor of Economics at Hitotsubashi University in 1999. Since 2002, he has been a Professor of Economics at Hitotsubashi University and Visiting Professor at Keio University. He was the Chair of the Government of Japan’s Statistics Committee (2019-2021). He was also a member of the Science Council of Japan (2014-2020), and Chair of the Economic Committee of the Science Council(2017-2020). He is currently a professor and the Dean of Faculty of Data Science, Rissho University. His research focuses on empirical studies of the Japanese economy and household behaviour, including public finance, monetary and fiscal policy and macroeconomics and applied econometrics. He has contributed substantially to the government and Bank of Japan’s policy making.

• Preface.- Chapter 1 Overview of the History of Money.- Chapter 2 On the Choice of Optimal Currency Denominations.- Chapter 3 The Impact of Denomination Choice on Commercial Trading: A Policy Evaluation of a New Iraqi Monetary System.- Chapter 4 Diffusion of Electronic Money and Choice of Payment Methods.- Chapter 5 The Impact of Electronic Money on Demand for Cash: Time Series Analysis.- Chapter 6 Can We Stabilize the Price of a Cryptocurrency? Understanding the Design of Bitcoin and Its Potential to Compete with Central Bank Money.- Chapter 7 A Cashless Society: Facts and Issues.- Chapter 8 The Future of Money or Quest for Good Money

After studying at Keio University (B.A. in Economics, 1981) and at the University of Pennsylvania (M.A. in International Relations, 1982), Yukinobu Kitamura specialized in household saving and bequest behavior for his D.Phil in Economics at the University of Oxford (1989). He then became a Research Assistant at the Institute of Economics and Statistics, University of Oxford (1987–1988) and an Economist at the Organization for Economic Cooperation and Development (OECD) (1988–1991) and at the Bank of Japan (1991－2021). He joined academia as a Guest Associate Professor at Keio University in 1996 and Associate Professor of Economics at Hitotsubashi University in 1999. Since 2002, he has been a Professor of Economics at Hitotsubashi University and Visiting Professor at Keio University. He was the Chair of the Government of Japan’s Statistics Committee (2019-2021). He was also a member of the Science Council of Japan (2014-2020), and Chair of the Economic Committee of the Science Council(2017-2020). He is currently a professor and the Dean of Faculty of Data Science, Rissho University. His research focuses on empirical studies of the Japanese economy and household behaviour, including public finance, monetary and fiscal policy and macroeconomics and applied econometrics. He has contributed substantially to the government and Bank of Japan’s policy making.

• Preface.- Chapter 1 Overview of the History of Money.- Chapter 2 On the Choice of Optimal Currency Denominations.- Chapter 3 The Impact of Denomination Choice on Commercial Trading: A Policy Evaluation of a New Iraqi Monetary System.- Chapter 4 Diffusion of Electronic Money and Choice of Payment Methods.- Chapter 5 The Impact of Electronic Money on Demand for Cash: Time Series Analysis.- Chapter 6 Can We Stabilize the Price of a Cryptocurrency? Understanding the Design of Bitcoin and Its Potential to Compete with Central Bank Money.- Chapter 7 A Cashless Society: Facts and Issues.- Chapter 8 The Future of Money or Quest for Good Money

After studying at Keio University (B.A. in Economics, 1981) and at the University of Pennsylvania (M.A. in International Relations, 1982), Yukinobu Kitamura specialized in household saving and bequest behavior for his D.Phil in Economics at the University of Oxford (1989). He then became a Research Assistant at the Institute of Economics and Statistics, University of Oxford (1987–1988) and an Economist at the Organization for Economic Cooperation and Development (OECD) (1988–1991) and at the Bank of Japan (1991－2021). He joined academia as a Guest Associate Professor at Keio University in 1996 and Associate Professor of Economics at Hitotsubashi University in 1999. Since 2002, he has been a Professor of Economics at Hitotsubashi University and Visiting Professor at Keio University. He was the Chair of the Government of Japan’s Statistics Committee (2019-2021). He was also a member of the Science Council of Japan (2014-2020), and Chair of the Economic Committee of the Science Council(2017-2020). He is currently a professor and the Dean of Faculty of Data Science, Rissho University. His research focuses on empirical studies of the Japanese economy and household behaviour, including public finance, monetary and fiscal policy and macroeconomics and applied econometrics. He has contributed substantially to the government and Bank of Japan’s policy making.

• Preface.- Chapter 1 Overview of the History of Money.- Chapter 2 On the Choice of Optimal Currency Denominations.- Chapter 3 The Impact of Denomination Choice on Commercial Trading: A Policy Evaluation of a New Iraqi Monetary System.- Chapter 4 Diffusion of Electronic Money and Choice of Payment Methods.- Chapter 5 The Impact of Electronic Money on Demand for Cash: Time Series Analysis.- Chapter 6 Can We Stabilize the Price of a Cryptocurrency? Understanding the Design of Bitcoin and Its Potential to Compete with Central Bank Money.- Chapter 7 A Cashless Society: Facts and Issues.- Chapter 8 The Future of Money or Quest for Good Money