This paper analyzes the effects on voting behavior of information disseminated over the Internet. We address endogeneity in Internet availability by exploiting regional and technological ...peculiarities of the preexisting voice telephony network that hindered the roll-out of fixed-line infrastructure for high-speed Internet. We find negative effects of Internet availability on voter turnout, which we relate to a crowding-out of TV consumption and increased entertainment consumption. We find no evidence that the Internet systematically benefits specific parties, suggesting ideological self-segregation in online information consumption. Robustness tests, including placebo estimations from the pre-Internet period, support a causal interpretation of our results.
Racial disparities in health are well-documented and represent a significant public health concern in the US. Racism-related factors contribute to poorer health and higher mortality rates among ...Blacks compared to other racial groups. However, methods to measure racism and monitor its associations with health at the population-level have remained elusive. In this study, we investigated the utility of a previously developed Internet search-based proxy of area racism as a predictor of Black mortality rates. Area racism was the proportion of Google searches containing the "N-word" in 196 designated market areas (DMAs). Negative binomial regression models were specified taking into account individual age, sex, year of death, and Census region and adjusted to the 2000 US standard population to examine the association between area racism and Black mortality rates, which were derived from death certificates and mid-year population counts collated by the National Center for Health Statistics (2004-2009). DMAs characterized by a one standard deviation greater level of area racism were associated with an 8.2% increase in the all-cause Black mortality rate, equivalent to over 30,000 deaths annually. The magnitude of this effect was attenuated to 5.7% after adjustment for DMA-level demographic and Black socioeconomic covariates. A model controlling for the White mortality rate was used to further adjust for unmeasured confounders that influence mortality overall in a geographic area, and to examine Black-White disparities in the mortality rate. Area racism remained significantly associated with the all-cause Black mortality rate (mortality rate ratio = 1.036; 95% confidence interval = 1.015, 1.057; p = 0.001). Models further examining cause-specific Black mortality rates revealed significant associations with heart disease, cancer, and stroke. These findings are congruent with studies documenting the deleterious impact of racism on health among Blacks. Our study contributes to evidence that racism shapes patterns in mortality and generates racial disparities in health.
The Effect of Trade on Workers and Voters Dippel, Christian; Gold, Robert; Heblich, Stephan ...
The Economic journal (London),
01/2022, Letnik:
132, Številka:
641
Journal Article
Recenzirano
Abstract
We investigate economic causes of the rising support of populist parties in industrialised countries. Looking at Germany, we find that exposure to imports from low-wage countries increases ...the support for nationalist parties between 1987–2009, while increasing exports have the opposite effect. The net effect translates into increasing support of the right-populist Alternative for Germany party after its emergence in 2013. Individual data from the German Socio-Economic Panel reveal that low-skilled manufacturing workers’ political preferences are most responsive to trade exposure. Using a novel approach to causal mediation analysis, we identify trade-induced labour market adjustments as an economic mechanism causing the voting response to international trade.
Intimate partner violence (IPV) is an important public health concern with higher prevalence among women. Community health workers (CHWs) are trusted frontline public health workers that bridge gaps ...between communities and healthcare services. Despite their effectiveness in delivering services and improving outcomes for different chronic conditions, there is a dearth of understanding regarding CHW management of IPV. The purpose of this study is to examine knowledge, attitudes, practices, and readiness to manage IPV among a sample of CHWs (n = 152). Participants completed an online version of the Physician Readiness to Manage Intimate Partner Violence Survey (PREMIS), which was modified for CHW practice. Psychometrics of the newly adapted tool, along with empirical relationships between knowledge, attitudes, and readiness to manage IPV were examined. Most sub-scales yielded moderate to high reliability (0.70 < α’s < 0.97), some sub-scales had low reliability (0.57 < α’s < 0.64), and construct validity was established for several of the subscales. On average, many CHWs had low scores on objective knowledge of IPV (mean = 15.4 out of 26), perceived preparation to manage IPV (mean = 3.8 out of 7), and perceived knowledge of IPV (mean = 3.7 out of 7). About 56% of CHWs indicated having no previous IPV training, 34% did not screen for IPV, and 65% were in the contemplation stage of behavior change. Multiple regression models indicated that knowledge, staff capabilities and staff preparation were significant predictors of perceived preparedness to manage IPV (all
p
’s < 0.05). Results can inform future credentialing requirements and training programs for CHWs to better assist their clients who are victims of IPV.
MESSENGER Mission Overview Solomon, Sean C; McNutt, Ralph L; Gold, Robert E ...
Space science reviews,
8/2007, Letnik:
131, Številka:
1-4
Journal Article
Recenzirano
The MErcury Surface, Space ENvironment, GEochemistry, and Ranging (MESSENGER) spacecraft, launched on August 3, 2004, is nearing the halfway point on its voyage to become the first probe to orbit the ...planet Mercury. The mission, spacecraft, and payload are designed to answer six fundamental questions regarding the innermost planet: (1) What planetary formational processes led to Mercury's high ratio of metal to silicate? (2) What is the geological history of Mercury? (3) What are the nature and origin of Mercury's magnetic field? (4) What are the structure and state of Mercury's core? (5) What are the radar-reflective materials at Mercury's poles? (6) What are the important volatile species and their sources and sinks near Mercury? The mission has focused to date on commissioning the spacecraft and science payload as well as planning for flyby and orbital operations. The second Venus flyby (June 2007) will complete final rehearsals for the Mercury flyby operations in January and October 2008 and September 2009. Those flybys will provide opportunities to image the hemisphere of the planet not seen by Mariner 10, obtain high-resolution spectral observations with which to map surface mineralogy and assay the exosphere, and carry out an exploration of the magnetic field and energetic particle distribution in the near-Mercury environment. The orbital phase, beginning on March 18, 2011, is a one-year-long, near-polar-orbital observational campaign that will address all mission goals. The orbital phase will complete global imaging, yield detailed surface compositional and topographic data over the northern hemisphere, determine the geometry of Mercury's internal magnetic field and magnetosphere, ascertain the radius and physical state of Mercury's outer core, assess the nature of Mercury's polar deposits, and inventory exospheric neutrals and magnetospheric charged particle species over a range of dynamic conditions. Answering the questions that have guided the MESSENGER mission will expand our understanding of the formation and evolution of the terrestrial planets as a family.
During MESSENGER's third flyby of Mercury, the magnetic field in the planet's magnetic tail increased by factors of 2 to 3.5 over intervals of 2 to 3 minutes. Magnetospheric substorms at Earth are ...powered by similar tail loading, but the amplitude is lower by a factor of approximately 10 and typical durations are approximately 1 hour. The extreme tail loading observed at Mercury implies that the relative intensity of substorms must be much larger than at Earth. The correspondence between the duration of tail field enhancements and the characteristic time for the Dungey cycle, which describes plasma circulation through Mercury's magnetosphere, suggests that such circulation determines the substorm time scale. A key aspect of tail unloading during terrestrial substorms is the acceleration of energetic charged particles, but no acceleration signatures were seen during the MESSENGER flyby.
Solar wind energy transfer to planetary magnetospheres and ionospheres is controlled by magnetic reconnection, a process that determines the degree of connectivity between the interplanetary magnetic ...field (IMF) and a planet's magnetic field. During MESSENGER's second flyby of Mercury, a steady southward IMF was observed and the magnetopause was threaded by a strong magnetic field, indicating a reconnection rate approximately 10 times that typical at Earth. Moreover, a large flux transfer event was observed in the magnetosheath, and a plasmoid and multiple traveling compression regions were observed in Mercury's magnetotail, all products of reconnection. These observations indicate that Mercury's magnetosphere is much more responsive to IMF direction and dominated by the effects of reconnection than that of Earth or the other magnetized planets.
Game theory is central to modern understandings of how people deal with problems of coordination and cooperation. Yet, ironically, it cannot give a straightforward explanation of some of the simplest ...forms of human coordination and cooperation--most famously, that people can use the apparently arbitrary features of "focal points" to solve coordination problems, and that people sometimes cooperate in "prisoner's dilemmas." Addressing a wide readership of economists, sociologists, psychologists, and philosophers, Michael Bacharach here proposes a revision of game theory that resolves these long-standing problems. In the classical tradition of game theory, Bacharach models human beings as rational actors, but he revises the standard definition of rationality to incorporate two major new ideas. He enlarges the model of a game so that it includes the ways agents describe to themselves (or "frame") their decision problems. And he allows the possibility that people reason as members of groups (or "teams"), each taking herself to have reason to perform her component of the combination of actions that best achieves the group's common goal. Bacharach shows that certain tendencies for individuals to engage in team reasoning are consistent with recent findings in social psychology and evolutionary biology. As the culmination of Bacharach's long-standing program of pathbreaking work on the foundations of game theory, this book has been eagerly awaited. Following Bacharach's premature death, Natalie Gold and Robert Sugden edited the unfinished work and added two substantial chapters that allow the book to be read as a coherent whole.
Cyberbullying, defined as bullying that takes place using technology, includes similar tactics found in traditional bullying as well as unique approaches such as viral repetition. Nationally, ...prevalence rates for cyberbullying range from 10% to as high as 40% of school-aged children, depending on the definition and measurement tool applied. The current study examines public tweets with keywords and hashtags related to cyberbullying posted during May 2016, using both human evaluation and computer examination to answer the following research questions: (1) What is the sentiment of tweets using cyberbullying keywords/hashtags? (2) What is the thematic content of the tweets? (3) What is the relationship between coding by researchers versus automated coding by Linguistic Inquiry and Word Count (LIWC) software? and (4) What is the content of the URLs attached to the tweets? A unique aspect of this study is the examination of the content of URLs included in the tweets, with the finding that the majority of the accessible URL references were to material that was positively focused. The majority of sample tweets referred to a cyberbully situation, contributed to a negative atmosphere, included references to known individuals, and suggested ongoing cyberbullying events. Results from this study suggest an opportunity for researchers, educators, and public health practitioners to use discourse on social media to inform interventions, to educate and share information, and to promote social well-being and mental health.
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