Category: Other
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The relationship between investment intensity and profitability measures from the perspective of foreign investors
Descriptive statistics Table 3 describes the statistics of all variables in the GCC countries in this study. Table 3 Descriptive statistics by variables. Table 3 shows that the mean EBITDA (1.437) is higher than the mean EBIT (1.291). The results of EBITDA and EBIT indicate that the overall financial performance of firms in GCC countries…
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Landscapes of pesticide risk | Nature Ecology & Evolution
A large-scale field study finds that different bee species experience different levels of risk from pesticides, depending on how much land is farmed within their foraging range. For bumblebees and solitary bees, more seminatural habitat means less risk from pesticides, but this is not true for honeybees. In the discussion of how to protect bees…
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Russian nuclear energy diplomacy and its implications for energy security in the context of the war in Ukraine
Our research, gathered in the dataset available in the Supplementary Data, indicates that upon Russia’s invasion of Ukraine, Rosatom boasted as many as 73 different projects in 29 countries. The projects were at very different stages of development from power plants in operation; through construction of reactors ongoing, contracted, ordered or planned; to involvement in…
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New evidence on the rural poverty and energy choice relationship
The dataset was generated by combining USAID’s Demographic Health Survey (DHS) country level household surveys with publicly available satellite information on precipitation accessed through the Google Earth Engine tool. The DHS survey information contains a set of data from representative national household surveys. Several years between 2006 and 2016 are available for each country, resulting…
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Ecological traits interact with landscape context to determine bees’ pesticide risk
Tilman, D., Cassman, K. G., Matson, P. A., Naylor, R. & Polasky, S. Agricultural sustainability and intensive production practices. Nature 418, 671–677 (2002). Article CAS PubMed Google Scholar Tilman, D. et al. Forecasting agriculturally driven global environmental change. Science 292, 281–284 (2001). Article CAS PubMed Google Scholar IPBES: Summary for Policymakers. In The Assessment Report…
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Aquifer conditions, not irradiance determine the potential of photovoltaic energy for groundwater pumping across Africa
PVWPS operation The motor and the pump are built in together14 and the motor-pump set is submersed in the borehole under the water43. Control equipment is also installed between the PV modules and the motor-pump and/or integrated to the motor-pump set in the borehole14,17. This equipment allows the motor-pump to stop and also to operate…
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Astronomers think the object, X7, might be debris cloud from a stellar collision — ScienceDaily
For two decades, scientists have observed an elongated object named X7 near the supermassive black hole at the center of the Milky Way and wondered what it was. Was it pulled off a larger structure nearby? Was its unusual form the result of stellar winds or was it shaped by jets of particles from the…
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New discovery sheds light on very early supermassive black holes — ScienceDaily
Astronomers from the University of Texas and the University of Arizona have discovered a rapidly growing black hole in one of the most extreme galaxies known in the very early Universe. The discovery of the galaxy and the black hole at its centre provides new clues on the formation of the very first supermassive black…
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Algorithms were supposed to reduce bias in criminal justice, but do they?
Really delivering on the promise of algorithms in the criminal justice system will require a radical reimagining of their use, says Ngozi Okidegbe, who is an expert on how technologies in the criminal justice system impact racially marginalized communities. Credit: Jackie Ricciardi Algorithms were supposed to remake the American justice system. Championed as dispassionate, computer-driven…
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Ayahuasca, ‘source of knowledge’ in the heart of the Amazon
Alex Lucitante, member of the Cofan Avie community, was a co-recipient of the Goldman Environmental Prize. In the heart of the Ecuadoran Amazon live the Cofan Avie, masters of ayahuasca—the powerful hallucinogenic concoction said to open the door to the “spirit” world. Here, they call it “yage” and consume it for health and wisdom. “God…