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Replication data for: Farmer Field Days and Demonstrator Selection for Increasing Technology Adoption
No full textEmerick, Kyle, and Dar, Manzoor H., (2021) “Farmer Field Days and Demonstrator Selection for Increasing Technology Adoption.” Review of Economics and Statistics 103:4, 680–693
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
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Essays in Environmental Economics
No full textThis dissertation presents research on environmental economics and policy, linking the effects of environmental uncertainty with policy effectiveness.
In the first chapter, I study the effects of weather and seasonal forecasts on US agri- culture. The economics discipline has accumulated evidence on the negative impacts of extreme heat on economic activity. Less understood are the actions that economic agents in the expectation of extreme heat. This chapter studies the effect of seasonal climate forecasts on US agriculture. I find that the behavioral responses to forecasts of extreme heat have much larger financial implications than the direct effects of extreme heat. Specifically, I find that an additional day above 29 degrees Celsius in the growing season forecast, causes farm revenues to fall by 1.83% when the occurrence of a day above 29 degrees Celsius reduces revenues by 0.20%. The large drop in revenue is the result of large drops in investment on the part of farmers. These losses in revenue have large and significant consequences for farm profitability. I study some of the underlying changes in investments that farmers make in response to forecasts of extreme heat and show that farmers reduce investments but direct more of their remaining resources towards staple crops like corn, cotton, and soybeans.
In the second chapter, I study the effectiveness of short-term pollution policies. This chapter analyzes the effect of an emergency air pollution control policy to address short-run spikes of ozone concentrations in Mexico City. The multi-faceted policy combines a driving restriction with industrial emissions controls to reduce ozone. I use hourly measurements from Mexico City’s pollution monitoring network and leverage variation in the pollution measure that triggers the policy to implement a regression-discontinuity design to calculate causal estimates of the pollution reductions from the policy. I find that the policy signifi- cantly reduces ozone pollution over the entire monitoring network using multiple measures. In particular, the daily 1-hour maximum ozone reading falls by 16.4 ppb, a 17% reduction. The peak ozone reduction benefits of the policy are spatially concentrated, but the spatial distribution of benefits is not associated with high population density, vehicle ownership, or proxies for income. The mortality benefits from reduced ozone are between USD 3.7 million and USD 5.6 million for each advisory. I find no evidence of reductions of CO and NOX, two pollutants closely associated with motor vehicles, suggesting that the benefits of the policy could be maintained without a driving restriction.
In my final chapter, I study the interaction between day-ahead markets and the inter- mittent nature of solar energy in California to identify the environmental benefits and costs of policies that would expand solar capacity or require solar producers to commit to lower amounts of production in day-ahead markets to reduce variability and uncertainty in solar generation. I estimate the causal effect of changes in solar generation on emissions from fossil fuel generators taking into account the dynamic nature of decision making in power markets and distinguishing between the effects of predicted solar generation and unexpected deviations from the day-ahead forecast. I find that increasing hourly solar generation in the day-ahead market by 1% leads to a larger reduction in fossil fuel generation from California and imported resources, leading to a drop in CO2 emissions of 16 tons. I also find evidence that local fossil fuel generation provides a flexible resource to respond to deviations from the solar generation forecast. This provision of flexibility has an environmental cost, in- creasing CO2 emissions and implies that policies to reduce uncertainty about real-time solar generation would have environmental benefits.Public Polic
Variations on the Author
Get PDF“Variations on the Author” discusses two of Eduardo Coutinho’s recent films (Um Dia na Vida, from 2010, and Últimas Conversas, posthumously released in 2015) and their contribution to the general question of documentary authorship. The director’s filmography is characterized by a consistent yet self-effacing form of authorial self-inscription: Coutinho often features as an interviewer that rather than express opinions propels discourses; an interviewer that is good at listening. This mode of self-inscription characterizes him as an author who is not expressive but who is nonetheless markedly present on the screen. In Um Dia na Vida, however, Coutinho is completely absent form the image, while Últimas Conversas, on the contrary, includes a confessional prologue that moves the director from the margins to the center of his films. This article examines the ways in which these works stand out in the filmography of a director who offers new insights into the notion of cinematic authorship
Appropriate Similarity Measures for Author Cocitation Analysis
Get PDFWe provide a number of new insights into the methodological discussion about author cocitation analysis. We first argue that the use of the Pearson correlation for measuring the similarity between authors’ cocitation profiles is not very satisfactory. We then discuss what kind of similarity measures may be used as an alternative to the Pearson correlation. We consider three similarity measures in particular. One is the well-known cosine. The other two similarity measures have not been used before in the bibliometric literature. Finally, we show by means of an example that our findings have a high practical relevance.information science;Pearson correlation;cosine;similarity measure;author cocitation analysis
Dispelling the Myths Behind First-author Citation Counts
Get PDFWe conducted a full-scale evaluative citation analysis study of scholars in the XML research field to explore just how different from each other author rankings resulting from different citation counting methods actually are, and to demonstrate the capability of emerging data and tools on the Web in supporting more realistic citation counting methods. Our results contest some common arguments for the continued
use of first-author citation counts in the evaluation of scholars, such as high correlations between author rankings by first-author citation counts and other citation
counting methods, and high costs of using more realistic citation counting methods that are not well-supported by the ISI databases. It is argued that increasingly available digital full text research papers make it possible for citation analysis studies to go beyond what the ISI databases have directly supported and to employ more
sophisticated methods
koamabayili/VECTRON-author-checklist: VECTRON author checklist
No full textWe have done our best to complete the author checklist relating to the use of animals in the hut study. Note that the objective for the hut study was to evaluate the IRS treatment applications for residual efficacy against Anopheles mosquitoes, including the local An. coluzzii mosquito population. Cows were only used to attract mosquitoes into the huts and no tests were carried out directly on the cows. The author checklist is intended for use with studies where experiments are carried out on animals, which is why we have had such difficulty in completing this for the hut study, as many of the questions do not relate to how the cows were used
Author-wise bibliometric analysis based on entropy.
No full textAuthor-wise bibliometric analysis based on entropy.</p
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