Real exchange rates and unit root tests

Real Exchange Rates and Unit Root Tests. — This paper examines monthly OECD exchange rate data (1979–1997) using univariate and panel data unit root tests. Some of these tests support the hypothesis of a unit root. But tests of cointegration reveal the existence of weak purchasing power parity relationships between bilateral nominal exchange rates and relative prices. We suggest that researchers need not conduct unit root tests on real exchange rate data when a modified version of PPP is used; or if there is a long enough time series. Given the definition of real exchange rates, the indicator should be stationary and should have intrinsic mean reverting behaviour.     

Inventory of differential items selling from two shops under a single management with periodically increasing demand over a finite time-horizon

Inventories of differential items including the defective ones purchased/produced in a lot and sold from two shops (primary and secondary shops) under a single management are considered here over a finite time-horizon. A primary shop receives the differential units in a lot but sells only the non-defective ones whose demand periodically increases with time and decreases during the shortage period in such a way that it comes back to the initial value at the beginning of the next cycle. Hence in this shop, shortages are allowed and fully backlogged. Moreover, at the beginning of the next cycle, the retailer purchases purely non-defective units at a higher price to meet up the shortage amount along with the usual lot of differential units for regular sale. The defective units identified at the time of selling at the primary shop are continuously transferred to the adjacent secondary shop from which the defective ones are sold at a reduced price after some rework. Normally, the price of a defective item is fixed depending upon the quantum of its defect and people go for these items if they are cheap. Hence, demand for these units is dependent on the selling price, which is again inversely proportional to the rate of defectiveness. There may be five scenarios for dealing with defective units depending upon the coincidence of the time periods at two shops. For all scenarios, problems have been mathematically formulated and solved by the use of both parametric study and a gradient-based non-linear optimisation method. The models are illustrated with the help of numerical examples.     

Is financial reporting shaped by equity markets or by debt markets? An international study of timeliness and conservatism

We hypothesize debt markets—not equity markets—are the primary influence on “association” metrics studied since Ball and Brown (1968 J Account Res 6:159–178). Debt markets demand high scores on timeliness, conservatism and Lev’s (1989 J Account Res 27(supplement):153–192) R ², because debt covenants utilize reported numbers. Equity markets do not rate financial reporting consistently with these metrics, because (among other things) they control for the total information incorporated in prices. Single-country studies shed little light on debt versus equity influences, in part because within-country firms operate under a homogeneous reporting regime. International data are consistent with our hypothesis. This is a fundamental issue in accounting.     

Redesigning the human resources function at Lafarge

This article describes the detailed process of redesigning and implementing the human resources (HR) function at Lafarge. The article argues that a well‐articulated and integrated approach of (1) recruitment, selection, and induction, (2) retraining and redeployment, (3) a performance appraisal system, (4) a compensation and reward mechanism, and (5) rightsizing and (6) integration is required to be aligned with the overall business strategy of the organization. It also reinforces that the foundation of a value‐added HR function is a business strategy that relies on people as a source of competitive advantage. Key challenges for Lafarge in the future include (1) maintaining the change momentum, (2) fast and effective integration of acquired companies and transfer of “best practices,” and (3) attracting and retaining a diverse workforce through their internationalization program. © 2004 Wiley Periodicals, Inc.     

Crime and moral hazard: Does more policing necessarily induce private negligence?

Even risk-neutral individuals can insure themselves against crimes by combining direct expenditure on security with costly diversification. In such cases — and even when one of these options is infeasible — greater policing often actually encourages private precautions.     

A note on globalization and urban residential rents

We present evidence on the impact of international economic openness upon residential real estate, consistent with the well-known Balassa–Samuelson effect, which suggests that increasing openness raises relative prices of non-tradable goods and services. Using a data set for 46 cities in different countries, we find that urban rents are positively affected by the openness of the economy and by city size.     

Dynamics of the Relationship Between the Terms of Trade and the Trade Balance in Developing Countries of Asia,Africa and Latin America

The objectives of this study are to examine the relationship between the terms of trade and trade balance to GDP ratios for a large number of developing economies using data on barter terms of trade, real exchange rate and trade balances. The literature on the subject postulates J-curve or S-curve between terms of trade and trade balance and we examine whether there is any evidence of a J-curve or S-curve relationship in time series data over the period 1970–1999. We find that for a few economies in Asia, Africa and Latin America, the existence of a S-curve is supported. However, for a large number of countries, neither a strict J-curve nor S-curve relationship holds.

     

Is Grameen Lending Efficient? Repayment Incentives and Insurance in Village Economies

Many believe that a key innovation by the Grameen Bank is to encourage borrowers to help each other in hard times. To analyse this, we study a mechanism design problem where borrowers share information about each other, but their limited side contracting ability prevents them from writing complete insurance contracts. We derive a lending mechanism which efficiently induces mutual insurance. It is necessary for borrowers to submit reports about each other to achieve efficiency. Such cross-reporting increases the bargaining power of unsuccessful borrowers, and is robust to collusion against the bank.     

Borrower runs

Microfinance institutions and other lenders in developing countries rely on the promise of future loans to induce repayment. However, if borrowers expect that others will default, and so loans will no longer be available in the future, then they will default as well. We refer to such contagion as a borrower run. The optimal lending contract must provide additional repayment incentives to counter this tendency to default.