Internet Adoption and Financial Development in Sub‐Saharan Africa: Evidence from Nigeria and Kenya

Financial development is influenced by the dynamics of multiple factors which have remained insufficiently explored up to date. In view of this, an attempt is made in this paper to investigate the impact of internet adoption on financial development in sub‐Saharan Africa, using Nigeria and Kenya as case studies. The dynamic ordinary least squares and vector error correction mechanism methods were employed in the study which revealed that the internet, complemented by financial openness, exerted a significant positive impact on financial development in the period 2000–16. The null hypothesis which states that the internet does not encourage financial development is therefore rejected. It follows that the level of financial development in both countries, and indeed most countries in sub‐Saharan Africa, could be enhanced by adopting appropriate policies that encourage more inclusive use of the internet. The policy recommendations of this study therefore include (i) relaxing the stringent requirements for licensing internet operators in order to make more services available for financial transactions, (ii) integrating internet technology into the national infrastructure framework in order to sustain its application, (iii) fostering local skills and expertise that will be maintaining internet infrastructure and (iv) providing a legal framework that protects personal information and ensures responsible usage of internet.     

The External Debt Problem in Africa: A Comparative Study of Nigeria and Morocco

In this paper, the African external debt problem with particular reference to Nigeria and Morocco is extensively analysed, and statistical indicators show that it is severe and has adverse effects on investment. The analysis also finds that fiscal expenditure, balance of payments and global interest rate are the crucial factors in explaining the accumulation of external debt in the two countries. Although the problem tends to exhibit some differences in characteristics between the two countries, the fact remains that they both belong to the same category of highly indebted countries. It is therefore necessary they embark on a rapid programme of privatization aimed at reducing fiscal expenditure, and a sustained export promotion programme to improve balance of payments. At the same time, both countries should restructure and develop their capital markets to reduce exposure to the vagaries of global interest rate. The International Monetary Fund (IMF) and the World Bank could also assist by modifying the International debt relief programme (HIPC Initiative) to accommodate both countries. Cet article étudie en détail le problème de la dette extérieure de l’Afrique, en se centrant en particulier sur les exemples du Nigeria et du Maroc. Les indicateurs statistiques montrent que le problème est grave et a des effets négatifs sur l’investissement. L’analyse a également mis à jour le fait que les dépenses fiscales, la balance des paiements et le taux d’intérÁt global sont des facteurs essentiels dans l’accumulation de la dette extérieure dans ces deux pays. Si le problème présente des caractéristiques différentes dans les deux pays, le fait n’en demeure pas moins qu’ils appartiennent tous deux à la mÁme catégorie des pays très endettés. Il leur est donc nécessaire d’engager rapidement un programme de privatisation visant à réduire les dépenses fiscales, et un programme intensif de promotion des exportations pour améliorer la balance des paiements. Dans le mÁme temps, les deux pays doivent restructurer et développer leurs marchés financiers pour réduire leur exposition aux caprices des taux d’intérÁt mondiaux. Le Fonds monétaire international (FMI) et la Banque mondiale pourraient également les aider en modifiant le programme international d’allégement de dette (Initiative PPTE) de manière à ce qu’ils puissent en profiter.     

Net primary production and gross domestic product in China derived from satellite imagery

Since the 1980s Chinese economic reform has greatly accelerated its economic growth while in contrast China's environment is increasingly degraded. The Chinese government has recognized that environmental protection and sustainable economic development can promote mutual and sustainable co-development of the economy and the environment as a basic national principle. This paper examines the interactions between economic development and environmental change in China that were compared and analyzed for the years 1996 and 2000. Net primary production (NPP) was selected as a proxy evaluator of ecosystems and gross domestic product (GDP) was chosen as a proxy evaluator of economic development. An NPP change map was produced with Advanced Very High Resolution Radiometer (AVHRR) summed annual NPP imagery products. The Defense Meteorological Satellite Program's Operational Linescan System (DMSP/OLS) nighttime imagery was used to produce a Chinese GDP change map. An integrated map was produced to exhibit the combined changes of NPP and GDP. This map showed that in the regions with increased GDP, NPP decreased but the regions with no GDP change were smaller in area for NPP increase while larger in area for NPP decrease. The changing pattern of NPP varied with the developing level of GDP at province level. A province's development of GDP is controlled by its accessibility to natural resources. Interactions between NPP and GDP are greatly affected by factors of spatial location aside from human factors and natural systems' characteristics.     

Appropriating the value from innovation: inimitability and the effectiveness of isolating mechanisms

Preventing the imitation of products and their underlying characteristics is a key source of competitive advantage. Isolating mechanisms, such as patents, brand name and speed to market, render an organisation's inventions imperfectly imitable by competitors, helping sustain the above‐normal returns achieved from a new product innovation. A theoretical framework is developed whereby the characteristics of isolating mechanisms, namely causal ambiguity, asset stock effects and enforceability of property rights, are shown to be important determinants of appropriation effectiveness. A multiple method research design, consisting of a survey of 238 large Australian organisations, and a further six case study organisations, is adopted. The results indicate that isolating mechanisms in the form of technological capabilities, market‐based assets and knowledge protection positively moderate an organisation's returns from their innovation activities, while being first‐to‐market is found to negatively moderate the business returns achieved. Implications for managers in increasing the effectiveness of their appropriation regime, and future directions for research are proposed.     

On Invariant Post‐randomization for Statistical Disclosure Control

In this paper, we investigate certain operational and inferential aspects of invariant Post‐randomization Method (PRAM) as a tool for disclosure limitation of categorical data. Invariant PRAM preserves unbiasedness of certain estimators, but inflates their variances and distorts other attributes. We introduce the concept of strongly invariant PRAM, which does not affect data utility or the properties of any statistical method. However, the procedure seems feasible in limited situations. We review methods for constructing invariant PRAM matrices and prove that a conditional approach, which can preserve the original data on any subset of variables, yields invariant PRAM. For multinomial sampling, we derive expressions for variance inflation inflicted by invariant PRAM and variances of certain estimators of the cell probabilities and also their tight upper bounds. We discuss estimation of these quantities and thereby assessing statistical efficiency loss from applying invariant PRAM. We find a connection between invariant PRAM and creating partially synthetic data using a non‐parametric approach, and compare estimation variance under the two approaches. Finally, we discuss some aspects of invariant PRAM in a general survey context.     

Spline regression for hazard rate estimation when data are censored and measured with error

In this paper, we study an estimation problem where the variables of interest are subject to both right censoring and measurement error. In this context, we propose a nonparametric estimation strategy of the hazard rate, based on a regression contrast minimized in a finite‐dimensional functional space generated by splines bases. We prove a risk bound of the estimator in terms of integrated mean square error and discuss the rate of convergence when the dimension of the projection space is adequately chosen. Then we define a data‐driven criterion of model selection and prove that the resulting estimator performs an adequate compromise. The method is illustrated via simulation experiments that show that the strategy is successful.     

Comparing Consumption–Based Asset–Pricing models

We make use of a recently developed method to estimate the intertemporal marginal rate of substitution consistent with the fluctuations of asset return data from the Toronto Stock Exchange. These estimates are then used to evaluate various parametric specifications for preferences often used in empirical studies of consumption and asset returns. In contrast to existing studies, we are able to perform a formal statistical comparison of these models. We consider six extensions of the usual power utility model, and we find that none can be said to be a demonstrable improvement on the standard model.
Comparaison de modèles de prix des actifs fondés sur la consommation. Les auteurs utilisent une méthodologie développée récemment pour calibrer le taux marginal de substitution inter–temporel compatible avec les fluctuations des rendements sur les actifs enregistrées au Toronto Stock Exchange. Ces estimations sont utilisées pour évaluer diverses spécifications paramétriques souvent utilisées dans les études empiriques de la consommation et des rendements sur les actifs. Contrairement à ce qui est présenté dans les études existantes, les auteurs font une comparaison statistique formelle de ces modèles. Ils considèrent six extensions du modèle d'utilité et trouvent qu'aucune ne constitue une amélioration significative du modèle standard.     

Community conversations as a strategy to change harmful traditional practices against women

This article conducts a series of list experiments to detect whether community conversations contribute to a change in thinking about harmful traditional practices in Ethiopia. While our findings are mixed, we provide evidence that community conversations are indeed a valuable instrument to induce a change in social values in order to empower women.