1. Introduction and Overview. 2. Detecting Influential Observations and Outliers. 3. Detecting and Assessing Collinearity. 4. Applications and Remedies. 5. Research Issues and Directions for Extensions. Bibliography. Author Index. Subject Index.

Regression Diagnostics: Identifying Influential Data and Sources of Collinearity

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The Theory of Industrial Organization

Digital Transformation: A Multidisciplinary Reflection and Research Agenda

The digital transformation of innovation and entrepreneurship: Progress, challenges and key themes

We must all accept that science is data and that data are science, and thus provide for, and justify the need for the support of, much-improved data curation. (Hanson, Sugden, & Alberts) 
 
Researchers are producing an unprecedented deluge of data by using new methods and instrumentation. Others may wish to mine these data for new discoveries and innovations. However, research data are not readily available as sharing is common in only a few fields such as astronomy and genomics. Data sharing practices in other fields vary widely. Moreover, research data take many forms, are handled in many ways, using many approaches, and often are difficult to interpret once removed from their initial context. Data sharing is thus a conundrum. Four rationales for sharing data are examined, drawing examples from the sciences, social sciences, and humanities: (1) to reproduce or to verify research, (2) to make results of publicly funded research available to the public, (3) to enable others to ask new questions of extant data, and (4) to advance the state of research and innovation. These rationales differ by the arguments for sharing, by beneficiaries, and by the motivations and incentives of the many stakeholders involved. The challenges are to understand which data might be shared, by whom, with whom, under what conditions, why, and to what effects. Answers will inform data policy and practice. © 2012 Wiley Periodicals, Inc.

科研数据共享的挑战 (The Conundrum of Sharing Research Data)

The economic impact of broadband on growth: A simultaneous approach

Using annual data from 192 countries over the period 1990–2007, we assess the impact of mobile telecommunications on economic growth. We find that this impact is smaller for countries with a low mobile penetration, usually low income countries. While in low income countries the mobile telecommunications contribution to annual GDP growth is 0.11%, for high income countries this is 0.20%. The increasing returns from mobile adoption are also emerging when assessing the impact on productivity growth. To promote mobile telecommunications penetration liberalization policies along with appropriate regulatory frameworks are recommended. Such policies should be pursued more forcefully in cases where serious shortcomings exist.

— Harald Gruber and Pantelis Koutroumpis

Mobile telecommunications and the impact on economic development

Broadband access in the EU

Purpose – The purpose of this paper is to measure the cumulative, holistic impact of discrete information and communication technologies. It also provides a glimpse of applications and service adoption, which complements more traditional perspectives such as technology penetration. This approach is utilized to measure achievements in implementing a policy such as Europe's Digital Agenda. Design/methodology/approach – Measuring digitization should cover the transition to digitally intensive societies across multiple sets of metrics, capturing not only technology penetration, but also its use in order to understand the full impact of digitization. For this purpose, a composite index was developed based on six overarching components: affordability, infrastructure investment, network access, capacity, usage, and human capital. Findings – These concepts were utilized to assess Europe's performance in terms of its digitization. Significant gaps were highlighted both in terms of its uneven development, but also ...

Using a digitization index to measure the economic and social impact of digital agendas

The paper assesses the scope for competition inducing infrastructure regulation in furthering the diffusion of innovation. The paper uses data on the adoption of broadband services comprising a global panel of 167 countries. The effects of different regulatory provisions are assessed. Inter-firm competition in general and intra-platform competition on the incumbent’s DSL network in particular accelerate adoption of broadband, whereas there is little evidence that inter-platform over different access technologies and intra-platform competition on cable have such effects. Retail competition has about a twice as strong effect than local loop unbundling in furthering diffusion. The effect deriving from service competition is more powerful than the effect of provisions that induce competitors in investing. The diffusion enhancing effect from regulatory access provisions however dissipates after 3-4 years. These results are robust under different hypotheses of reverse causality and taking into account regulatory metrics and variable endogeneity.

Pantelis Koutroumpis

Papers

The economic impact of broadband on growth: A simultaneous approach

Mobile telecommunications and the impact on economic development

Broadband access in the EU

Using a digitization index to measure the economic and social impact of digital agendas

Competition Enhancing Regulation and Diffusion of Innovation: The Case of Broadband Networks