26 research outputs found

    Search for Spatial Correlations of Neutrinos with Ultra-high-energy Cosmic Rays

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    For several decades, the origin of ultra-high-energy cosmic rays (UHECRs) has been an unsolved question of high-energy astrophysics. One approach for solving this puzzle is to correlate UHECRs with high-energy neutrinos, since neutrinos are a direct probe of hadronic interactions of cosmic rays and are not deflected by magnetic fields. In this paper, we present three different approaches for correlating the arrival directions of neutrinos with the arrival directions of UHECRs. The neutrino data are provided by the IceCube Neutrino Observatory and ANTARES, while the UHECR data with energies above ∌50 EeV are provided by the Pierre Auger Observatory and the Telescope Array. All experiments provide increased statistics and improved reconstructions with respect to our previous results reported in 2015. The first analysis uses a high-statistics neutrino sample optimized for point-source searches to search for excesses of neutrino clustering in the vicinity of UHECR directions. The second analysis searches for an excess of UHECRs in the direction of the highest-energy neutrinos. The third analysis searches for an excess of pairs of UHECRs and highest-energy neutrinos on different angular scales. None of the analyses have found a significant excess, and previously reported overfluctuations are reduced in significance. Based on these results, we further constrain the neutrino flux spatially correlated with UHECRs

    La CorrupciĂłn en Venezuela: “Una PĂ©rdida Total de La Moralidad”

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    Acknowledging the rampant political corruption that has persisted in Venezuela for decades, this paper contrasts two theories of its source: the “elite” culture of the Venezuelan populace and the “democratic socialist” government structure through a literature review supplemented by an interview with Venezuelan refugees. By analyzing political theories by various authors and compiling historical information, this paper concludes that the political theory of populism (also known as functionalist theory) accurately combines cultural and governmental perspectives, providing the most comprehensive reason for Venezuelan corruption. Furthermore, the theory of populism also explains the dynamics of social psychology that contributed to the moral corruption and ironic complacency of the vocal Venezuelan people. This phenomenon re-conceptualizes political corruption to not only consider the immoral actions of governmental figures, but those of everyday citizens as well. In other words, societal corruption can spread top-down, bottom-up, and laterally in any class of society by infecting a country’s cultural fiber

    Evolution of a Systematic Approach to Smoking Cessation in Ontario’s Regional Cancer Centres

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    Smoking cessation after a cancer diagnosis can significantly improve a person’s prognosis, treatment efficacy and safety, and quality of life. In 2012, Cancer Care Ontario (now part of Ontario Health) introduced a Framework for Smoking Cessation, to be implemented for new ambulatory cancer patients at the province’s 14 Regional Cancer Centres (RCCs). Over time, the program has evolved to become more efficient, use data for robust performance management, and broaden its focus to include new patient populations and additional data collection. In 2017, the framework was revised from a 5As to a 3As brief intervention model, along with an opt-out approach to referrals. The revised model was based on emerging evidence, feedback from stakeholders, and an interim program evaluation. Results showed an initial increase in referrals to cessation services. Two indicators (tobacco use screening and acceptance of a referral) are routinely monitored as part of Ontario Health’s system-wide performance management approach, which has been identified as a key driver of change among RCCs. Due to the COVID-19 pandemic, many RCCs reported a decrease in these indicators. RCCs that were able to maintain a high level of smoking cessation activities during the pandemic offer valuable lessons, including the opportunity to swiftly leverage virtual care. Future directions for the program include capturing data on cessation outcomes and expanding the intervention to new populations. A focus on system recovery from COVID-19 will be paramount. Smoking cessation must remain a core element of high-quality cancer care, so that patients achieve the best possible health benefits from their treatments
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