The long-run impact of inflation in South Africa

This paper evaluates the hypothesis of long-run super-neutrality of money (LRSN) within the context of the South African economy. The long-run impact of inflation on the interest rate and subsequently, output is estimated by employing a trivariate structural vector autoregression model, using quarterly data for the period of 1960:1 to 2010:1. The estimation results suggest that the hypothesis of LRSN cannot be rejected, thereby suggesting that monetary policy in South Africa cannot be used to solve the large and persistent unemployment problem in South Africa, which is understandable, since unemployment is inherently structural and is due to skills-shortage. This is further supported by our one of our other results which shows that significant long-run impact on output is obtained from technological improvements.     

The impact of Oportunidades on human capital and income distribution in Mexico: A top-down/bottom-up approach

To analyze the effects of the Mexican Oportunidades conditional cash transfer program on school attendance and household income distribution, this paper links a microeconometric simulation model and a general equilibrium model in a bidirectional way, so to explicitly take spillover effects of the program into account. Our results suggest that partial equilibrium analysis alone underestimates the distributional effects of the program. Extending the coverage of the program to the poor increases school attendance, reduces child labor supply, and increases the equilibrium wages of children who remain at work. With a relatively low fiscal cost, Mexican social policy could further reduce income inequality and poverty.     

Money demand stability: A case study of Nigeria

Monetary policy in Nigeria aims is to achieve price and monetary stability. During the 1980s and 1990s, monetary targeting was the dominant monetary policy framework in Nigeria. However, in 2006 the Central Bank of Nigeria (CBN) adopted the new monetary policy framework through which short-term interest rates are adjusted to achieve stability in the value of the domestic currency. This paper has presented an empirical investigation into the demand for Nigerian real narrow money (M1) over the period 1960–2008 in an attempt to identify whether the CBN were right to adopt the new monetary policy framework. In doing so, we estimate alternative (canonical and extended) specifications of M1 demand using structural change methods. Our results suggest that the canonical specification is well-determined. Although the money demand relationship went through a regime shift in 1986, it is largely stable. These findings favour the use of supply of money as an instrument of monetary policy, thus lending limited support for the new monetary policy framework.     

The real uncovered interest parity: The case of Canada and the USA

The aim of this paper is to re-assess the real uncovered interest parity (RUIP) in the light of including domestic demand shocks as possible determinants of the real exchange rate. We use annual data for two close trading partners, namely Canada and the USA. Using cointegration analysis we find evidence in favour of RUIP. In addition, empirical support is provided to show that discretionary fiscal policy actions have a spillover effect to the real exchange rate via real interest rates.     

The debt trap: A two-compartment train wreck… and how to avoid it

We explore sustainable paths out of a debt trap with a highly stylized two-sector differential equations model for the stocks of money in Government and Society. The model fits the data for the U.S. between 1981 and 2012 with a coefficient of correlation of 0.996. The solutions provide detailed “escape conditions” from the debt trap. A primary surplus is required. Then a government can escape its debt trap either through sustained annual monetary outflows from society to the government (taxation) but with a low initial growth rate, or through annual monetary inflows into both sectors (stimulus) with higher initial growth rate. We illustrate the use of our model with simulations which show how five indebted countries can escape their debt trap in 30 (or 70) years.     

Central banks’ priorities and the left/right partisanship of exchange rates

This study argues that when central banks subordinate all policy goals to achieving price stability greater central bank independence encourages left-wing governments to seek greater exchange rate stability. Such central bank policy priorities make the Left's preferred distributive policies more dependent on the effectiveness of fiscal policy, which under high capital mobility increases with exchange rate stability. In contrast, right-wing governments put greater emphasis on market adjustments and price stability. Hypotheses are tested by estimating the sensitivity of exchange rate variation to partisanship, central bank independence, and the salience of price stability, using a Prais-Winsten estimator and Instrumented Variables, run on pooled cross-section time-series data from 22 OECD countries during 1990-2004.     

Periods and structural breaks in US economic history 1959-2007

Principal component analysis (PCA) is applied to six macroeconomic time series observed over 1959-2007. Six periods in US economic history are identified by a cluster analysis of observations in the PCA score plot. The method is data driven with no a priori information on the number or dates of breaks. Our findings give independent support to the effect of the oil price shock in 1973, and the introduction of the Great Moderation period. Of the five transition periods, two have been identified by previous studies as breaks (1973, 1984), one is a well-known date of monetary policy change (1979), and two had not previously been identified (1970, 1977-1978). In the long-run inflation and the federal funds rate are unrelated to industrial production and unemployment. Inflation and interest are positively associated as predicted by the Fisher hypothesis. These long-run relations argue against the use of monetary policy to peg the rate of unemployment or real interest rates. In the short-run inflation acts a leading indicator for unemployment for the period 1959-1997, but not for the period after 1997. The well-established reduction in macroeconomic volatility in the mid-1980s is specific to the period from 1985 to 1997; volatility subsequently rises above pre-1979 levels.     

Macroeconomic consequences of terrorism in Pakistan

The objective of the study examines the macroeconomic consequences of terrorism in Pakistan. The study evaluates the short- and long-run relationship between terrorism and economic factors over a period of 1975–2011. Both objectives have been achieved with the sophisticated econometrics techniques including cointegration theory, Granger causality test and variance decomposition, etc. The result reveals that macroeconomic factors, i.e., population growth, price level, poverty and political instability cause the terrorism incidence in Pakistan. However, income inequality, unemployment and trade openness have no long-run relationship with the terrorism incidence in Pakistan. The study may conclude that, for some how, Pakistan's macroeconomic indicators have significant long-run equilibrium with terrorism incidence. The result of Granger causality indicates that except unemployment, all other macroeconomic indicators have unidirectional causality with terrorism incidence. Unemployment has a bi-directional causality with the terrorism incidence in Pakistan. The results of variance decomposition indicate that there exists statistically significant cointegration among macroeconomic factors and terrorism incidence in Pakistan. Among macroeconomic factors, changes in price level exert the largest influence on terrorism in Pakistan. Contrary, the influence of poverty seems relatively the least contribution level for changes in terrorism incidence in Pakistan.     

Housing and the business cycle in South Africa

This paper examines the housing-output growth nexus in South Africa by accounting for the time variation in the causal link with a bootstrapped rolling Granger non-causality test. We use quarterly data on real gross domestic product, real house prices, real gross fixed capital formation and number of building plans passed. Our data span 1971Q2–2012Q2. Using full sample bootstrap Granger causality tests, we find a uni-directional causality from output to number of building plans passed; a uni-directional causality from real house price to output and a bi-directional causal link between residential investment and output. However, using parameter stability tests, we show that estimated VARs are unstable, thus full-sample Granger causality inference may be invalid. Hence, we use a bootstrap rolling window estimation to evaluate Granger causality between the housing variables and the growth rate. In general, we find that the causality from housing to output and, vice versa, differ across different sample periods due to structural changes. Specifically speaking, house price is found to have the strongest causal relationship with output compared to residential investment and number of building plans passed, with real house price showing predictive ability in all but one downward phase of the business cycle during this period.     

Interest rate pass-through in the Euro area during the financial crisis: A multivariate regime-switching approach

In this paper we use a Markov-switching vector autoregressive model to analyse the interest rate pass-through between interbank and retail bank rates in the Euro area. Empirical results, based on monthly data for the period 2003–2011, show that during periods of financial distress bank lending rates to both households and non-financial corporations show a reduction of their degree of pass-through from the money market rate. Significant sectoral heterogeneities characterise the transmission mechanism of monetary policy impulses, with rates on loans to non-financial firms being more affected by changes in the interbank rate than loans to households, both in times of high volatility and in normal market conditions.     

Fiscal deficits under financial pressure and insolvency: Evidence for Italy,Greece and Spain

This article attempts to re-evaluate the sustainability of the fiscal deficit as well as the long-run macroeconomic relationship between government spending and revenues for three South-European economies under financial market pressure and insolvency; Italy, Greece and Spain. The empirical analysis uses annual data from 1970 to 2010 and employs various cointegration techniques to account for possible linear and nonlinear effects in fiscal policy actions. The evidence for all three countries suggests that, allowing for structural break, (i) the fiscal deficits are weakly sustainable in the long-run, (ii) the spend-and-tax hypothesis is supported and (iii) the budgetary adjustment process is asymmetric in Italy and Spain.     

用单片机AT89C51两个口输出广告灯的实验

MCS-51单片机的教学是一门实用性和实践性很强的学科,在教学中可以开出许多很有意义的实验（实训）项目。在教学中开发设计的用单片机AT89C51 P0口 P2口输出广告灯的实验（实训）教学项目,对于学生应用本学科所学知识解决实际问题很有启发指导意义,同时对加强学生的专业技能训练很有帮助。     

Public expenditures on education, human capital and growth in Canada: An OLG model analysis

Much of the current debate in ageing countries focuses on whether governments should increase investments in human capital. We address this issue by simulating the effects of additional education spending using an overlapping-generations model applied to Canada. In the context of population ageing, the results indicate that how the policy is funded has powerful impacts on the targeted outcomes. Higher education incentives may increase the rate of human capital accumulation and mitigate the negative effects of slowing labour force growth. However, the impact depends on the distortions implied by alternative tax instruments and the efficiency of public expenditures on education.     

The cross-impact between financial markets,Covid-19 pandemic,and economic sanctions: The case of Iran

The main financial markets in the Iranian Economy include the stock exchange, foreign exchange, oil, and gold markets. The sharp fluctuations in these markets, especially those caused by the severe sanctions imposed on Iran in May 2018, and the pandemic outbreak of Covid-19 have led to more confusion and uncertainty among investors. One of the effective approaches to examine such unstable conditions is to study the co-movement(s) between markets to identify the leading variable(s). Thus, in the present study, Wavelet Coherence Analysis was applied to examine the co-movements between markets in a time period from September 2014 to June 2020, as an intense period of uncertainty in Iran. In other words, in this study, the markets were investigated in different sub-periods. Also, the Segmented Regression was performed to estimate the impact of sanctions and the Covid-19 pandemic on the co-movements of financial markets in Iran.The results showed that the oil price had a low co-movement with the other three markets, i.e. stock exchange, exchange rate, and gold markets. Thus, the oil market can be a suitable alternative for risk aversion investors. Meanwhile, the oil market could also act as a source of finance for the government during the sanctions period. That possibly explains the recent decision by the Iranian government to use the oil market to finance its budget deficit. Between the exchange rate and gold price, the gold price was identified as the leading variable. While the exchange rate and gold price did not show a significant co-movement in stable conditions, they did show a significant co-movement in unstable conditions, as in times of sanctions or during a global pandemic and thus influenced the investors’ portfolio risk. This result is important from a policy-making perspective. Based on this result, the policymakers can, especially during crises and unstable conditions, control the gold market and make it more stable by managing the foreign exchange market.     

Distributional and employment effects of labour tax changes in Finland

Labour income taxes in Finland decreased considerably during the period 1996–2008. At the same time the Finnish economy grew rapidly. Nevertheless, there was another coincidental trend in this period: a rapid rise in inequality. This study aims to answer to what extent labour income tax reductions between 1996 and 2008 contributed to this trend in inequality. The study also examines how much more employment was achieved owing to the labour tax reforms. To answer these questions, I build a dynamic general equilibrium model with heterogeneous agents. The model is calibrated to fit the Finnish economy. The study finds that the labour income tax cuts fractionally raised the Gini coefficient for net labour income. They also increased the concentration of wealth. The employment gains due to the reforms have been modest, but nevertheless significant.     

Policy regimes and the shape of the Phillips curve in Australia

We document an evolving pattern in the slope of the Phillips curve in Australia at different frequencies under different monetary policy regimes and labor market regulations. Our estimation strategy relies on the spectral analysis that includes the gain and phase spectrum but is also complemented by the time domain estimation. We document an upward sloping medium-run Phillips curve in the pre-1977 period, a downward sloping long-run Phillips curve from 1977 to 1993, and a flattened Phillips curve from 1993 onwards. Lag and lead relationship between inflation and unemployment varies across periods and frequencies. The Phillips curve at business-cycle frequencies is downward sloping in all periods. We explain our results in terms of the monetary targeting in 1976 and the inflation targeting in 1993 by the RBA, respectively, and important changes in labor relations from the mid-1980s to the mid-1990s.     

Global imbalances and household savings: The role of wealth

Many claim that fluctuations in U.S. private savings help to create and to sustain global imbalances because of their influence on the current account deficit. To test this claim, this paper investigates the determinants of aggregate household savings using a panel of 18 developed countries for the period 1980–2005. We weave two strands of literature: the first strand from consumer theory, considering specifically the ‘wealth effect’, the second strand from aggregate private savings theory. The original contribution of this paper derives from the main explanatory variables of the household savings function: two measures of household wealth, the first a financial variable and the second a variable for tangible/housing stock. The salience of these variables has not been tested before. The model is then enriched with variables taken from the private savings literature. To find the best technique to estimate the long run savings function, unit root and cointegration tests are carried out, from which evidence of a cointegrating relationship is found. The group means FMOLS is used to estimate the model. The empirical evidence suggests effects consistent with theory: an increase in wealth negatively affects household savings. Furthermore, when important explanatory variables, such as government savings and population dependency ratios, are included in the model, tangible wealth becomes the only kind of wealth to (weakly and negatively) influence household savings in developed countries. In the U.S. however, wealth does not seem to affect household savings negatively, it seems instead that government savings and population changes better explain the decline of savings during the past two decades. This finding provides additional evidence on the issue of global imbalances, and suggests that the recent booms of the stock and the real estate markets should not be blamed for the decline in U.S. household and private savings.     

Transmission mechanisms of financial stress into economic activity in Turkey

Measuring, analyzing and understanding systemic risk in financial system have become very important in the light of the recent global crisis. In this study, we follow Holló, Kremer, and Lo Duca (2012) and evaluate systemic stress of financial system of Turkey with a high frequency (daily) financial stress index which consists of daily 13 financial market indicators. Dynamics of the financial stress index indicate that the index creates proper signals to the well-known financial stress events. The dynamic interaction between financial stress and real economic activity is investigated with application of structural VAR (SVAR) model. Results of the study suggest that deterioration of financial conditions impacts real economic activity significantly and adversely.     

The effectiveness of monetary policy in small open economies

This paper examines the relative effectiveness of the use of direct and indirect monetary policy instruments in Barbados, Jamaica and Trinidad and Tobago, by estimating a restricted Vector Autoregressive model with Exogenous Variables (VARX). The model captures the dynamic interaction of the key sectors in the economy and it accounts for the fact that the banking system in those countries is characterized by high levels of excess reserves. Also, the study assumes that the central bank conducts monetary policy using a Taylor-type rule, and it evaluates the effects of a reserve requirement policy. The results show that although a positive shock to the policy interest rate has a direct effect on commercial banks’ interest rates, there is a weak transmission to the real variables. Furthermore, an increase in the required reserve ratio is successful in reducing private sector credit and excess reserves, while at the same time alleviating pressures on the exchange rate. The findings therefore indicate that central banks in small open economies should consider using reserve requirements as a complement to interest rate policy, to achieve their macroeconomic objectives.     

India's demand for international reserve and monetary disequilibrium: Reserve adequacy under floating regime

The main aim of this study is to investigate India's demand for international reserve by focusing on the role of national monetary disequilibrium and to present new benchmarks for assessing the adequacy of international reserves. We assessed India's position in terms of reserve adequacy and found that India is well placed and has sufficient stock of international reserves to meet the minimum adequacy requirements. Also, the results reveal that the central bank is holding substantial excess reserves and the related opportunity cost (1.5% of GDP) appears to be quite considerable. Further, the estimates of reserve demand function suggest that scale of foreign trade, uncertainty and profitability considerations play significant role in determining India's long-term reserve demand policies. More importantly, validating the monetary approach to balance of payment, our results show that national monetary disequilibrium does play a crucial role in short-run reserve movements. An excess of money demand (supply) induces an inflow (outflow) of international reserves with an elasticity of 0.56 which also implies that Reserve Bank of India responds to correct the domestic money market disequilibrium; and did not just leave it completely on the mercy of reserve inflows.