The rise of scientific computing was one of the most important advances in the S&T progress during the second half of the 20th century. Parallel with theoretical exploration and scientific experiments,scientific c...The rise of scientific computing was one of the most important advances in the S&T progress during the second half of the 20th century. Parallel with theoretical exploration and scientific experiments,scientific computing has become the 'third means' for scientific activities in the world today. The article gives a panoramic review of the subject during the past 50 years in China and lists the contributions made by Chinese scientists in this field. In addition, it reveals some key contents of related projects in the national research plan and looks into the development vista for the subject in China at the dawning years of the new century.展开更多
Twenty USA states or jurisdictions and 125 nations have modeled national environmental policies after the National Environmental Policy Act.That act mandates that federal agencies initiate environmental impact stateme...Twenty USA states or jurisdictions and 125 nations have modeled national environmental policies after the National Environmental Policy Act.That act mandates that federal agencies initiate environmental impact statements(EISs)when substantive environmental or human health consequences are likely because of an agency action related to proposed development projects.The science used to inform the EIS process,however,does not require independent scientific peer review(ISPR)in the USA or most other nations.But ISPR is needed for governments to accurately inform the EIS decision-making and public reporting processes.Instead,science is routinely manipulated during EIS reviews to generate expedient project outcomes with substantially negative ecological,political,and long-term economic consequences.We provide four examples of EISs that lack ISPR,as well as four examples where reviews by independent scientists were helpful to improve agency decisions.We also recommend that independent scientists(no affiliation with the project proponents or agencies overseeing projects)be used to help assess potential environmental and socio-economic impacts,as well as offer appropriate risk assessments,study designs,and monitoring timeframes.We conclude that nations should convene formal reviews using independent scientists as a form of peer review in the EIS process.展开更多
Rainfall simulators(RS)have been used,above all,to evaluate hydrological processes related to soil water infiltration,surface runoff and soil erosion.They allow repeatability of rain application with different precipi...Rainfall simulators(RS)have been used,above all,to evaluate hydrological processes related to soil water infiltration,surface runoff and soil erosion.They allow repeatability of rain application with different precipitation intensities in field and/or laboratory conditions and should produce events with physical characteristics similar to natural rain.In this manuscript,we carried out a bibliometric and scientometric analysis of studies with simulated rainfall in Brazil to assess the temporal evolution of publications,the main topics addressed and the degree of technological development of the equipment.We searched for the terms“rainfall simulator”OR“simulated rainfall”AND“Brazil”in the Scopus,Web of Science,SciELO and Google Scholar databases.We found 143 articles published in the last 37 years(1985-2022).Our findings indicate that the main research areas covered in papers are soil erosion(57.34%),soil water infiltration(24.47%),nutrient losses(9.8%)and RS development and calibration/assessment(8.39%).In recent years,the number of published papers in international high-impact factor journals has increased.Most of the papers(49.65%)refer to studies carried out by institutions located in the south and southeast regions of Brazil.Moreover,there is a large gap of studies on simulated rainfall in other regions of Brazil,where important biomes such as the Cerrado,Amazon,Caatinga,and their transitions are located.This study informs research priorities on soil erosion under simulated rainfall and provides a bibliographic database that can assist in more detailed future analyses.展开更多
文摘The rise of scientific computing was one of the most important advances in the S&T progress during the second half of the 20th century. Parallel with theoretical exploration and scientific experiments,scientific computing has become the 'third means' for scientific activities in the world today. The article gives a panoramic review of the subject during the past 50 years in China and lists the contributions made by Chinese scientists in this field. In addition, it reveals some key contents of related projects in the national research plan and looks into the development vista for the subject in China at the dawning years of the new century.
文摘Twenty USA states or jurisdictions and 125 nations have modeled national environmental policies after the National Environmental Policy Act.That act mandates that federal agencies initiate environmental impact statements(EISs)when substantive environmental or human health consequences are likely because of an agency action related to proposed development projects.The science used to inform the EIS process,however,does not require independent scientific peer review(ISPR)in the USA or most other nations.But ISPR is needed for governments to accurately inform the EIS decision-making and public reporting processes.Instead,science is routinely manipulated during EIS reviews to generate expedient project outcomes with substantially negative ecological,political,and long-term economic consequences.We provide four examples of EISs that lack ISPR,as well as four examples where reviews by independent scientists were helpful to improve agency decisions.We also recommend that independent scientists(no affiliation with the project proponents or agencies overseeing projects)be used to help assess potential environmental and socio-economic impacts,as well as offer appropriate risk assessments,study designs,and monitoring timeframes.We conclude that nations should convene formal reviews using independent scientists as a form of peer review in the EIS process.
基金The authors would like to thank the Brazilian Agencies Coordenação de Aperfeiçoamento de Pessoal de Nível Superior(CAPES)(Finance code 001)Conselho Nacional de Desenvolvimento Científico e Tecnológico(CNPq)(Processes 140335/2021-8 and 305919/2022-9)for funding the training of highly qualified human resources through research grants and for funding the projects that resulted in the referenced publications and the present paper.
文摘Rainfall simulators(RS)have been used,above all,to evaluate hydrological processes related to soil water infiltration,surface runoff and soil erosion.They allow repeatability of rain application with different precipitation intensities in field and/or laboratory conditions and should produce events with physical characteristics similar to natural rain.In this manuscript,we carried out a bibliometric and scientometric analysis of studies with simulated rainfall in Brazil to assess the temporal evolution of publications,the main topics addressed and the degree of technological development of the equipment.We searched for the terms“rainfall simulator”OR“simulated rainfall”AND“Brazil”in the Scopus,Web of Science,SciELO and Google Scholar databases.We found 143 articles published in the last 37 years(1985-2022).Our findings indicate that the main research areas covered in papers are soil erosion(57.34%),soil water infiltration(24.47%),nutrient losses(9.8%)and RS development and calibration/assessment(8.39%).In recent years,the number of published papers in international high-impact factor journals has increased.Most of the papers(49.65%)refer to studies carried out by institutions located in the south and southeast regions of Brazil.Moreover,there is a large gap of studies on simulated rainfall in other regions of Brazil,where important biomes such as the Cerrado,Amazon,Caatinga,and their transitions are located.This study informs research priorities on soil erosion under simulated rainfall and provides a bibliographic database that can assist in more detailed future analyses.
