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This article examines the key global, environmental and policy factors that act as determinants of e-commerce diffusion. It is based on systematic comparison of case studies from 10 countries

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Movements and Technology Diffusion (Information today, 2008). he is now engaged in examining who captures the value in the global It and wind industries. eric shih is an associate professor of marketing at the Skk Graduate School of Business, Sungkyunkwan University in korea. he received his Ph.D. from the University of california, Irvine. his research interests are in the areas of diffusion and impact of information technology. abstract: Previous research has found that information technology (It) investment is associated with significant productivity gains for developed countries but not for developing countries. Yet developing countries have continued to increase their investment in It rapidly. Given this apparent disconnect, there is a need for new research to study whether the investment has begun to pay off in greater productivity for developing countries. We analyze new data on It investment and productivity for 45 countries from 1994 to 2007, and compare the results with earlier research. We find that upper-income developing countries have achieved positive and significant productivity gains from It investment in the more recent period as they have increased their It capital stocks and gained experience with the use of It. We also find that the productivity effects of It are moderated by country factors, including human resources, openness to foreign investment, and the quality and cost of the telecommunications infrastructure. the academic implication is that the effect of It on productivity is expanding from the richest countries into a large group of developing countries. the policy implication is that lower-tier developing countries can also expect productivity gains from It investments, particularly through policies that support It use, such as greater openness to foreign investment, increased investment in tertiary education, and reduced telecommunications costs.

While public awareness of environmental sustainability is growing, there is concern about the economic costs of shifting to a greener economy. In the case of climate change, a critical issue is the relationship of economic output to greenhouse gas emissions, which has been labeled carbon productivity. Increasing carbon productivity means that economic growth can be sustained while emissions are reduced. Information technology has great potential to enhance carbon productivity, as IT is used to increase the energy efficiency of buildings, transportation systems, supply chains and electrical grids. On the other hand, the production and use of computers is a fast-growing component of global energy consumption and greenhouse gas emissions, a fact that must be balanced against the benefits of IT use. Green IS refers to the use of information systems to achieve environmental objectives, while Green IT emphasizes reducing the environmental impacts of IT production and use. This article focuses primarily on Green IS. It reviews existing Green IS research, presents a model of IT investment and carbon productivity, and lays out suggestions for future research.

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