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Identification and Inference for Econometric Models: Essays in Honor of Thomas Rothenberg

This paper analyzes the impact of information and communication technologies (ICT) on economic growth in developing, emerging and developed countries. It is based on a sample of 59 countries for the period 1995 to 2010. Various panel data regressions confirm the positive relationship between ICT capital and GDP growth. The regressions for the subsamples of developing, emerging and developed countries do not reveal statistically significant differences of the output elasticity of ICT between these three country groups.

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ICT and Economic Growth – Comparing Developing, Emerging and Developed Countries

https://ftp.zew.de/pub/zew-docs/dp/dp14117.pdf

ICT and economic growth : comparing developing, emerging and developed countries

Telecommunications Infrastructure and Economic Development: A Simultaneous Approach

This paper demonstrates how crop diversification impacts on two outcomes of climate smart agriculture; increased productivity (legume and cereal crop productivity) and enhanced resilience (household income, food security, and nutrition) in rural Zimbabwe. Using data from over 500 smallholder farmers, we jointly estimate crop diversification and each of the outcome variables within a conditional (recursive) mixed process framework that corrects for selectivity bias arising due to the voluntary nature of crop diversification. We find that crop diversification depends on the land size, farming experience, asset wealth, location, access to agricultural extension services, information on output prices, low transportation costs and general information access. Our results also indicate that an increase in the rate of adoption improves crop productivity, income, food security and nutrition at household level. Overall, our results are indicative of the importance of crop diversification as a viable climate smart agriculture practice that significantly enhances crop productivity and consequently resilience in rural smallholder farming systems. We, therefore, recommend wider adoption of diversified cropping systems notably those currently less diversified for greater adaptation to the ever-changing climate.

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Crop diversification and livelihoods of smallholder farmers in Zimbabwe: adaptive management for environmental change

We provide a structured overview of the quantitative research on the economic impacts of broadband internet. Differentiating between wireline and wireless technologies as well as broadband availability and broadband adoption, respectively, we review studies investigating the impacts on economic growth, employment and regional development as well as productivity and firm performance. Eventually, the survey does not only allow the identification of main research gaps but also provides useful information for policy makers on the significance and importance of communication networks for social welfare.

The Economic Impacts of Broadband Internet: A Survey

http://www.wu.ac.at/fileadmin/wu/d/ri/regulation/german_abstract_the_impact_of_infrastructure....pdf

The impact of infrastructure and service-based competition on the deployment of next generation access networks: Recent evidence from the European member states

We estimate own-price elasticities for fixed network voice telephony access and (national) calls services for private users and cross-price elasticities to mobile using time series data from 2002-2007 from the Austrian market. Using instrumental variable estimates and taking into account the possibility of cointegration we find that access is inelastic while calls are elastic. We conclude that the retail market for national calls of private users can probably be deregulated due to sufficient competitive pressure from mobile. Access-substitution on the other hand does not seem to be strong enough to justify de-regulation.

/pdf/is-fixed-mobile-substitution-strong-enough-to-de-regulate-3zrwh2tnma.pdf

Is fixed-mobile substitution strong enough to de-regulate fixed voice telephony? Evidence from the Austrian markets

Fiber deployment of next-generation high-speed broadband networks is considered to be a decisive development for any information-based society, yet investment activities and especially the adoption of fiber-based broadband services take place only very gradually in most countries. This work employs static and dynamic model specifications and identifies the most important determinants of the adoption of fiber-based broadband services with recent panel data from the European Union member states for the years from 2004 to 2012. The results show that the more effective previous broadband access regulation is, the more negative the impact on adoption, while competitive pressure from mobile networks affects adoption in a non-linear manner. Finally, we also find evidence for substantial network effects underlying the adoption process.

Wolfgang Briglauer

Papers

The Economic Impacts of Broadband Internet: A Survey

The impact of infrastructure and service-based competition on the deployment of next generation access networks: Recent evidence from the European member states

Is fixed-mobile substitution strong enough to de-regulate fixed voice telephony? Evidence from the Austrian markets

The impact of regulation and competition on the adoption of fiber-based broadband services: recent evidence from the European union member states

The deployment and penetration of high-speed fiber networks and services: Why are EU member states lagging behind?