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Zonder onderwerpscode: wereldeconomie, ontwikkelingsproblematiek

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Many developing countries have experienced significant developments in their telecommunications network. Countries in Africa are no exception to this. The paper examines what factor facilitates most network expansion using micro data from 45 fixed-line and mobile telephone operators in 18 African countries. In theory the telecommunications sector has two sector-specific characteristics: network externalities and discriminatory pricing. It finds that many telephone operators in the region use peak and off-peak prices and termination-based price discrimination, but are less likely to rely on strategic fee schedules such as tie-in arrangements. The estimated demand function based on a discreet consumer choice model indicates that termination-based discriminatory pricing can facilitate network expansion. It also shows that the implied price-cost margins are significantly high. Thus, price liberalization could be conducive to development of the telecommunications network led by the private sector. Some countries in Africa are still imposing certain price restrictions. But more important, it remains a policy issue how the authorities should ensure reciprocal access between operators at reasonable cost.

Access to Markets --- Data --- Debt Markets --- E-Business --- Economic Theory and Research --- Electricity --- Emerging Markets --- Fax --- Finance and Financial Sector Development --- Infrastructure Development --- International Economics & Trade --- International Telecommunication --- Macroeconomics and Economic Growth --- Markets and Market Access --- Mobile Phone --- Mobile Phone Subscribers --- Mobile Telephone --- Network --- Penetration Rate --- Penetration Rates --- Price --- Prices --- Private Sector --- Private Sector Development --- Technological Advance --- Telecom --- Telecommunications --- Telecommunications Industry --- Telecommunications Infrastructure --- Telecommunications Network --- Telephone Penetration

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Economic development is affected by infrastructure services in both volume and quality terms. However, the quality of infrastructure is relatively difficult to measure and assess. The current paper, using firm-level data collected by a business environment assessment survey in 26 countries in Europe and Central Asia, estimates the marginal impacts on firm costs of infrastructure quality. The results suggest that the reliability or continuity of services is important for business performance. Firm costs significantly increase when electricity outages occur more frequently and the average outage duration becomes longer. Similarly, increased hours of water supply suspensions also reduce firms' competitiveness. In these countries, it is found that the total benefit for the economy from eliminating the existing electricity outages ranges from 0.5 to 6 percent of gross domestic product. If all water suspensions are removed, the economy could receive a gain of about 0.5 to 2 percent of gross domestic product. By contrast, the quality of telecommunications services seems to have no significant impact.

Communities & Human Settlements --- Driving --- Elasticity --- Infrastructure development --- Infrastructure Economics --- Infrastructure Economics and Finance --- Infrastructure investment --- Private Participation in Infrastructure --- Private Sector Development --- Road --- Road quality --- Road sector --- Roads --- Town Water Supply and Sanitation --- Transport --- Transport Economics, Policy and Planning --- Transportation --- Transportation costs --- Urban Slums Upgrading --- Water Supply and Sanitation

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The world is faced with considerable risk and uncertainty about climate change. Particular attention has been paid increasingly to hydropower generation in recent years because it is renewable energy. However, hydropower is among the most vulnerable industries to changes in global and regional climate. This paper aims to examine the possibility of applying a simple vector autoregressive model to forecast future hydrological series and evaluate the resulting impact on hydropower projects. Three projects are considered - in India, Sri Lanka, and Vietnam. The results are still tentative in terms of both methodology and implications; but the analysis shows that the calibrated dynamic forecasts of hydrological series are much different from the conventional reference points in the 90 percent dependable year. The paper also finds that hydrological discharges tend to increase with rainfall and decrease with temperature. The rainy season would likely have higher water levels, but in the lean season water resources would become even more limited. The amount of energy generated would be affected to a certain extent, but the project viability may not change so much. Comparing the three cases, it is suggested that having larger installed capacity and some storage capacity might be useful to accommodate future hydrological series and seasonality. A broader assessment will be called for at the project preparation stage.

Carbon dioxide --- Carbon dioxide concentrations --- Climate --- Climate Change --- Climate changes --- Energy --- Energy Production and Transportation --- Environment --- Global Climate Change --- Global Environment --- Global warming --- Hydro Power --- Rainfall --- Rainy season --- Renewable energy --- Temperature --- Water and Energy --- Water Resources

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The recent global crises, such as the COVID-19 crisis, remind us of the importance of efficient transportation and logistics. Notably, however, even before the crises, some regions were already experiencing a gradual increase in freight costs, with more and more empty trucks observed. The paper recasts light on the question of how road freight costs are determined using large, unique shipping data from Eastern European and Central Asian countries. It finds that economies of scale are significant in both freight weight or load factor and distance. The elasticity with respect to freight weight is particularly high at about 0.3 to 1.0 in absolute terms. Thus, to contain trucking costs, it is important to maximize the load factor through freight consolidation at origins and destinations. The elasticity with respect to distance is relatively modest at 0.04 to 0.16 in absolute terms but still statistically significant, indicating that distance may not necessarily be a constraint on trade and regional integration. Trucking costs also decrease with driving speed, a proxy for efficiency of movements or road conditions. The elasticity is significant for food products (-0.03) and other consumer goods (-0.11). Finally, the paper finds that border crossing adds 3-4 percent to freight costs.

Rural development.