A comparison of six sampling schemes for price index construction in a COICOP food group

This article compares the behaviour of sampling techniques for price indices using a scanner data set as a model population. Indices produced by two purposive deterministic cut-off designs and four probabilistic sampling schemes are compared with each other and with the ‘true’ population index from the whole data set. We found that the two deterministic cut-off sampling schemes show much different behaviour from the probabilistic sampling schemes. This is not unexpected, as the former schemes have a very restricted focus with respect to the variety of products. We also found that the probabilistic schemes are generally closer to each other and the ‘true’ value than the deterministic cut-off designs. The jackknife resampling technique is also explored as a means of estimating the SE of the index and compared with the actual results from repeated sampling.     

Estimation of the effects of price on apartment water demand using cointegration and error correction techniques

Water price is a key instrument in regulating water demand in the residential sector. Many empirical studies have assessed the effects of price through quantifying the price elasticity of water demand. However, most of these studies have mainly focused on the single-family housing rather the multifamily housing. An in-depth understanding of the price elasticity of multifamily housing water demand is paramount for water planners in order to properly manage water use in the fast growing intensive housing developments in urban areas. This study investigates both the long-term and short-term price elasticities of water demand in the residential apartments in Auckland central city. Using 6 years of monthly time series data, the price elasticities were estimated through cointegration and error correction methods. The results showed that the price elasticities of water demand were ?0.14 and ?0.12 in the short term and the long term, respectively. The price is inelastic yet negative and statistically significant, thus it can play a role in demand management.     

Environmental management,nonmarket strategy,and firm performance in emerging markets: The case of ISO 14001

Firms use environmental management standards such as ISO 14001 to reduce the impact of business activity on the natural environment. Though these standards are widely celebrated on moral and ethical grounds, their implication for financial performance and competitiveness is equivocal. Drawing on neo-institutional theory, we conceptualize ISO 14001 as a nonmarket strategy and examine its impact on firm performance within the contexts of three highly polluted emerging markets – China, India, and Pakistan. Employing a rigorous event-study approach, we find that ISO 14001 certification has a negative impact on firms’ operating profitability and market value in both short and long runs. This negative impact appears to be stronger in contexts with weak institutions and poor environmental protection regimes. Further multivariate analyses show that the negative impact of ISO 14001 on firm performance is weaker among socially responsible firms and stronger among politically connected firms. These findings contribute to the environmental management literature. They also have practical implications for managers.