In the societal challenge to switch to renewable energy, innovation has become an ever‐increasing critical determinant. However, while sustainability transition is a global challenge, diffusion and adoption of innovation tends to be uneven in space and unequal access may cause substantial heterogeneity in energy transition. This research analyzes how domestic and foreign innovation activities in the renewable energy sector influence energy transition over time. Empirical testing shows that a country's domestic innovation activity impacts renewable electricity generation capacity sooner than foreign technological innovations. I document that there are substantial barriers to substitute foreign technologies for domestic innovation efforts in the short run but also observe that foreign technologies have a stronger impact after some years. These findings have implications for cross‐border coordination of governmental innovation support and complementary policy instruments that aim at increasing adoption speed across borders. 相似文献
Having been adopted by legislatures in over a dozen states, postsecondary merit aid programs are largely concentrated in the southeastern United States. The observed clustering pattern seems to support previous evidence that policies spread between proximate states, a phenomenon referred to by political scientists as policy diffusion. Often, however, policy diffusion is not complete, and one or more states in a region fail to adopt. By interviewing policymakers throughout the southeastern United States—including actors in the three states in the region without merit aid—the study addresses the following question: Why do diffusion pressures lead to adoption in some states but not in others? Studying state “hold‐outs” promises not only to uncover the reasons for failed legislation in specific state contexts but also to better our understanding of the limits of diffusion theory. 相似文献
Despite a decline in crime rates, the 1990s witnessed extensive media coverage of several high‐profile stranger abductions and murders of children. State legislators' swift response to the public's growing fear of sex offenders with the adoption of sex offender registration and notification (SORN) laws raises questions about the role of politics. Punctuated equilibrium theory and the diffusion of innovation jointly provide a context to conduct an event history analysis to assess the extent to which politics enhanced legislative responsiveness to public opinion in SORN policymaking. Contrary to the commonly held belief that attributes legislative interest in SORN to salient crimes against children, the results suggest that factors such as the percentage of a conservative population, district‐level competition, and state innovativeness accelerated the diffusion of innovation of the laws. 相似文献
Despite its rich tradition, there are key limitations to researchers' ability to make generalizable inferences about state policy innovation and diffusion. This paper introduces new data and methods to move from empirical analyses of single policies to the analysis of comprehensive populations of policies and rigorously inferred diffusion networks. We have gathered policy adoption data appropriate for estimating policy innovativeness and tracing diffusion ties in a targeted manner (e.g., by policy domain, time period, or policy type) and extended the development of methods necessary to accurately and efficiently infer those ties. Our state policy innovation and diffusion (SPID) database includes 728 different policies coded by topic area. We provide an overview of this new dataset and illustrate two key uses: (i) static and dynamic innovativeness measures and (ii) latent diffusion networks that capture common pathways of diffusion between states across policies. The scope of the data allows us to compare patterns in both across policy topic areas. We conclude that these new resources will enable researchers to empirically investigate classes of questions that were difficult or impossible to study previously, but whose roots go back to the origins of the political science policy innovation and diffusion literature. 相似文献
AbstractThe collection of essays introduced in this article contributes to the debate on the commercialization of academic science by shifting the focus from institutional developments meant to foster university technology transfer to the actions of individual scientists. Instead of searching for the origins of the ‘entrepreneurial university,’ this special issue examines the personal involvement of academic physicists, engineers, photographic scientists, and molecular biologists in three types of commercial activity: consulting, patenting, and full-blown business entrepreneurship. The authors investigate how this diverse group of teachers and researchers perceived their institutional and professional environments, their career prospects, the commercial value of their knowledge and reputation, and their ability to exploit these assets. By documenting academic scientists’ response to market opportunities, the articles suggest that, already in the decades around 1900, commercial work was widespread and, in some cases, integral to academics’ teaching and research activity. 相似文献
Are some American states inherently more innovative than others? This question has confounded researchers for more than four decades. In this study we develop a measure of collective policy innovation that measures formal cooperative policy arrangements among the states, compare the measure to existing measures of internal state policy innovation, and assess whether existing innovativeness measures explain policy cooperation among the states. This test of the innovativeness concept addresses internal and external validity concerns that have long plagued this research tradition. Our multivariate analyses indicate that policy innovativeness is often a statistically and substantively important determinant of compact participation. These results suggest that (i) innovativeness is a meaningful and durable state attribute, (ii) several existing indices successfully capture the underlying latent concept, and (iii) innovativeness provides analytic utility in multiple empirical contexts. 相似文献
To thermally upgrade exterior masonry walls, interior insulation is often the only possible retrofitting technique, especially when dealing with historic buildings. Unfortunately, it is also the riskiest post-insulation technique, as frost damage, interstitial condensation, and other damage patterns might be induced. To diminish those risks, nowadays so-called capillary active interior insulation systems are often promoted. These systems aim a minimal reduction of the inward drying potential, while interstitial condensation is buffered.
Currently, several capillary active systems are on sale. These different types have, however, widely varying properties. In this article, a closer look at the hygrothermal properties and the working principle of a number of “capillary active” interior insulation systems is made. The spread in capillary absorption coefficients and the vapor diffusion resistances of the different systems is discussed and their influence is illustrated. Based on all this, a more nuanced view on capillary active insulation systems is pursued.
The diffusion literature is replete with examples of highly salient policies spreading across subnational governments. However, low-salience policies that do not benefit from a groundswell of public opinion also spread across jurisdictions in patterns that appear similar to those of other, more well-known policy ideas. This research is an investigation of the mechanisms that propagate low-salience policies. I analyze the adoption of the U.S. Green Building Council's (USGBC) Leadership in Energy Efficient Design standard across 119 U.S. cities from 2000 to 2008. The investigation indicates that a knowledge broker, in this case the USGBC, occupies critical roles in linking a low-salience policy to a broader set of widely held societal values, developing a common policy vocabulary, providing a base policy that jurisdictions may freely adapt, and creating a diffusion infrastructure by acting as a communication hub for existing and interested jurisdictions to discuss innovations and progress. 相似文献