Analysis of Environmental Efficiency Variation

In this article, we develop and implement a methodology for analyzing the sources of variation in environmental efficiency across producers. We formulate a two–stage model. In the first stage, we use stochastic frontier analysis to estimate both technical and environmental efficiency. In the second stage, we again use stochastic frontier analysis to regress estimated environmental efficiency scores against a variety of technology, physical environment, and management variables. In this stage we estimate the impact of each explanatory variable on environmental efficiency, and we derive conditional estimates of environmental efficiency from the one–sided error component. We illustrate our methodology with an empirical application to a panel of Dutch dairy farms. We find evidence of relatively low levels of environmental efficiency, and we find that environmental efficiency can be improved through a number of policy options, including the provision of farmers with more insight into the nutrient balance of their farms.     

The <Emphasis Type="Italic">β</Emphasis>-variance gamma model

Kuznetsov (Ann Appl Prob, 2009) introduces a 10-parameter family of Lévy processes for which the Wiener-Hopf factors and the distribution of the running supremum (infimum) can be determined semi-analytically. In this text we will examine the numerical performance of this so-called β-family, both in the equity world and in the field of credit risk. In order to do this, we will calibrate a particular member of this family to a vanilla option surface (by means of the Fast Fourier Transform-technique due to Carr and Madan (J Comput Fin 2(4):61–73, 1999) and use the resulting parameters to determine the prices of a digital down-and-out barrier (DDOB) option, written on the same underlying. In a second experiment, we will try and calibrate the model to some real-life credit default swap (CDS) term structures. The parameters of the model under investigation are chosen such that its Lévy density is approximately equal to that of the famous Variance Gamma (VG) process, which will serve as a benchmark. Hence, the former will be referred to as the β-VG model. The option prices will be determined both semi-analytically [using the formulas derived by Kuznetsov (Ann Appl Prob, 2009)] and through a Monte-Carlo simulation. However, the CDS spreads will only be determined semi-analytically, due to the very close relation between pricing DDOB options and determining the par spread of a CDS. Furthermore, in both cases, the results will be compared with the ones obtained using the VG model [Cf. Schoutens (Lévy processes in finance: pricing financial derivatives, Wiley , Chichester, 2003) and, Cariboni and Schoutens (Levy processes in credit risk, Wiley, Chichester, 2009)]. It will turn out that, w.r.t. vanilla option prices, the β-VG model performs almost identically as the VG model, whereas the semi-analytical expressions by Kuznetsov (Ann Appl Prob, 2009) lead to a (fast and) accurate pricing of DDOB options and CDSs.     

Strategic Groups and Inter-Firm Networks In International High-Tech Industries

Strategic partnering and the analysis of strategic groups are two issues which enjoy a growing interest from industrial economists as well as from strategic management scholars. This contribution focuses on two related topics in the discussion on strategic group formation. the first subject addresses the relevance of strategic groups for understanding industry heterogeneity. the other topic covers the question whether companies from particular strategic groups establish strategic links with each other, or whether intra-group rivalry leads to inter-firm cooperation across strategic groups. Although it appears neglected in the literature the possible linking of the analysis of strategic groups with corporate network studies could generate further understanding of the process of strategic group formation. the present contribution focuses on the international information technology industry in order to study the possible symmetry of the structure of strategic group formation and parallel inter-firm networks of strategic partnering empirically.     

Social Employment of Welfare Recipients in Belgium: An Evaluation

In Belgium, welfare agencies receive a subsidy to employ welfare recipients for a period sufficiently long to entitle them to unemployment benefits. We investigate the effect of this programme on the exit rate from welfare. We propose a grouping/IV estimator of the programme effect that eliminates selection bias. The estimator is consistent, even if the selection into the programme depends on the average unobserved characteristics of welfare recipients in a region and in a welfare duration interval. Without correction for selectivity we find that the programme reduces welfare dependence, but after correction this conclusion is reversed.     

To Be or Not Be …'Too Late': The Case of the Belgian Semi-annual Earnings Announcements

In this study, we demonstrate that the average reporting lag of Belgian interim reports is large but has decreased slightly over the years 1991–1998. Contrary to US findings, we show that the disclosure of interim reports containing bad (good) news is not systematically delayed (speeded up). Interim reports are value relevant since good (bad) news, according to a naïve earnings expectations model, induces positive (negative) abnormal returns. The 'short term' timeliness of the information disclosure, however, seems not to matter at all.     

A model for identifying and ranking dangerous accident locations: a case study in Flanders

These days, road safety has become a major concern in most modern societies. In this respect, the determination of road locations that are more dangerous than others (black spots or also called sites with promise) can help in better scheduling road safety policies. The present paper proposes a multivariate model to identify and rank sites according to their total expected cost to the society. Bayesian estimation of the model via a Markov Chain Monte Carlo approach is discussed in this paper. To illustrate the proposed model, accident data from 23,184 accident locations in Flanders (Belgium) are used and a cost function proposed by the European Transport Safety Council is adopted to illustrate the model. It is shown in the paper that the model produces insightful results that can help policy makers in prioritizing road infrastructure investments.     

Learning in strategic technology alliances

In this paper we examine the influence of strategic technology alliances on organisational learning. From an empirical perspective we examine the pre- and post-alliance knowledge bases of allying firms. We find that the pre-alliance knowledge base overlap of the allying firms has an inverted U-shaped relationship with the degree of learning taking place in the alliance. Alliances established for the purpose of learning also show a significantly greater increase in knowledge base overlap for the allying firms than for non-learning alliance or non-allying firms. This shows the particular importance of learning alliances as a vehicle for organisational learning and competence development. Contrary to what we expected we found that weak ties are more important than strong ties in organisational learning within strategic alliances.     

Long- versus short-term orientation: new perspectives

Long- versus short-term orientation, a national value dimension originally found by Bond among students in 23 countries, became Hofstede's (1991 Hofstede, G. 1991. Cultures and organizations: software of the mind, London: McGraw-Hill.  [Google Scholar]) fifth dimension of national cultures. Recent analyses by Minkov (2007 Minkov, M. 2007. What makes us different and similar: a new interpretation of the World Values Survey and other cross-cultural data, Sofia: Klasika i Stil.  [Google Scholar]) of World Values Survey data, collected from representative samples of national populations, allow the calculation of a new version of this dimension, this time across 93 countries. National scores on the dimension correlate with certain family values, with school results, with business values, with environmental values and, under favorable historical conditions, with economic growth. In 1988 the dimension scores led to a prediction of China's economic success. The new scores allow new predictions for economic developments in different parts of the world.     

Mapping leisure shopping trip decision making: validation of the CNET interview protocol

Qualitative research methods can provide an in-depth understanding of how people come to certain decisions, providing valuable input to ground behavioural assumptions in activity-based travel demand models and to implement high impact policy measures to change travel behaviour. The CNET interview protocol is a semi-structured personal interview method to elicit the mental representation of individuals’ decision making. There is a risk of bias caused by the interviewer’s interpretation of the respondents’ answers. Therefore, the quality of the CNET interview protocol is assessed by evaluating its trustworthiness using intercoder reliability tests. Krippendorff’s alpha is identified as the most appropriate measure. The intercoder reliability is sufficiently high. Consequently, the CNET interview protocol can be considered a valid method to measure and map individuals’ considerations in complex spatio-temporal decision problems.     

Estimation of nonlinear models with mismeasured regressors using marginal information

We consider the estimation of nonlinear models with mismeasured explanatory variables, when information on the marginal distribution of the true values of these variables is available. We derive a semi‐parametric MLE that is shown to be $\sqrt{n}$ consistent and asymptotically normally distributed. In a simulation experiment we find that the finite sample distribution of the estimator is close to the asymptotic approximation. The semi‐parametric MLE is applied to a duration model for AFDC welfare spells with misreported welfare benefits. The marginal distribution of the correctly measured welfare benefits is obtained from an administrative source. Copyright © 2010 John Wiley & Sons, Ltd.