6661期

最新文章

• Seizure of Nicaraguan university deals blow to nation's scientists AI翻译
  作者：Karath, Kata
• Establishing a new standard of care for calculus using trials with randomized student allocation AI翻译
  作者：Kramer, Laird; Fuller, Edgar; Watson, Charity; Castillo, Adam; Oliva, Pablo Duran; Potvin, Geoff
  作者单位：State University System of Florida; Florida International University; State University System of Florida; Florida International University; State University System of Florida; Florida International University; State University System of Florida; Florida International University; Virginia Commonwealth University
  摘要：Calculus, the study of change in processes and systems, serves as the foundation for many STEM disciplines. Traditional, lecture-based calculus instruction may present a barrier for students seeking STEM degrees, limit their access to STEM professions, and block their potential to address society's challenges. A large-scale pragmatic trial with randomized student allocation was conducted to compare two calculus instruction styles: active student engagement (treatment condition) versus traditio...
• In Other Journals AI翻译
  作者：[Anonymous]
• News at a glance AI翻译
  作者：Brainard, Jeffrey
• 撤稿声明: Hierarchical organization of guidance receptors: Silencing of netrin attraction by Slit through a Robo/DCC receptor complex (Retraction of Vol 29, art no 1928, 2001) AI翻译
  作者：Tessier-Lavigne, Marc
  作者单位：Stanford University
• Observations of a black hole x-ray binary indicate formation of a magnetically arrested disk AI翻译
  作者：You, Bei; Cao, Xinwu; Yan, Zhen; Hameury, Jean-Marie; Czerny, Bozena; Wu, Yue; Xia, Tianyu; Sikora, Marek; Zhang, Shuang-Nan; Du, Pu; Zycki, Piotr T.
  作者单位：Wuhan University; Zhejiang University; Chinese Academy of Sciences; Shanghai Astronomical Observatory, CAS; Universites de Strasbourg Etablissements Associes; Universite de Strasbourg; Polish Academy of Sciences; Center for Theoretical Physics - Polish Academy of Sciences; Nanjing University; Nanjing University; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Chinese Academy of Sciences; University of Science & Technology of China, CAS; Polish Academy of Sciences; Nicolaus Copernicus Astronomical Center of the Polish Academy of Sciences; Chinese Academy of Sciences; Institute of High Energy Physics, CAS; Chinese Academy of Sciences; University of Chinese Academy of Sciences, CAS
  摘要：Accretion of material onto a black hole drags any magnetic fields present inwards, increasing their strength. Theory predicts that sufficiently strong magnetic fields can halt the accretion flow, producing a magnetically arrested disk (MAD). We analyzed archival multiwavelength observations of an outburst from the black hole x-ray binary MAXI J1820+070 in 2018. The radio and optical fluxes were delayed compared with the x-ray flux by about 8 and 17 days, respectively. We interpret this as evid...
• A machine-learning tool to predict substrate-adaptive conditions for Pd-catalyzed C-N couplings AI翻译
  作者：Rinehart, N. Ian; Saunthwal, Rakesh K.; Wellauer, Joel; Zahrt, Andrew F.; Schlemper, Lukas; Shved, Alexander S.; Bigler, Raphael; Fantasia, Serena; Denmark, Scott E.
  作者单位：University of Illinois System; University of Illinois Urbana-Champaign
  摘要：Machine-learning methods have great potential to accelerate the identification of reaction conditions for chemical transformations. A tool that gives substrate-adaptive conditions for palladium (Pd)-catalyzed carbon-nitrogen (C-N) couplings is presented. The design and construction of this tool required the generation of an experimental dataset that explores a diverse network of reactant pairings across a set of reaction conditions. A large scope of C-N couplings was actively learned by neural...
• 撤稿声明: Binding of DCC by netrin-1 to mediate axon guidance independent of adenosine A2B receptor activation (Retraction of Vol 291, Pg 1976, 2001) AI翻译
  作者：Zou, Yimin; Poo, Mu-Ming; Tessier-Lavigne, Marc
  作者单位：University of California System; University of California San Diego; Chinese Academy of Sciences; Stanford University
• A principal odor map unifies diverse tasks in olfactory perception AI翻译
  作者：Lee, Brian K.; Mayhew, Emily J.; Sanchez-Lengeling, Benjamin; Wei, Jennifer N.; Qian, Wesley W.; Little, Kelsie A.; Andres, Matthew; Nguyen, Britney B.; Moloy, Theresa; Yasonik, Jacob; Parker, Jane K.; Gerkin, Richard C.; Mainland, Joel D.; Wiltschko, Alexander B.
  作者单位：Alphabet Inc.; Google Incorporated; Monell Chemical Senses Center; Michigan State University; University of Illinois System; University of Illinois Urbana-Champaign; University of Reading; Arizona State University; Arizona State University-Tempe; University of Pennsylvania
  摘要：Mapping molecular structure to odor perception is a key challenge in olfaction. We used graph neural networks to generate a principal odor map (POM) that preserves perceptual relationships and enables odor quality prediction for previously uncharacterized odorants. The model was as reliable as a human in describing odor quality: On a prospective validation set of 400 out-of-sample odorants, the model-generated odor profile more closely matched the trained panel mean than did the median panelis...
• Unanswered questions about the causes of obesity AI翻译
  作者：Speakman, John R.; Sorensen, Thorkild I. A.; Hall, Kevin D.; Allison, David B.
  作者单位：Chinese Academy of Sciences; Shenzhen Institute of Advanced Technology, CAS; University of Aberdeen; Chinese Academy of Sciences; Institute of Genetics & Developmental Biology, CAS; China Medical University; University of Copenhagen; University of Copenhagen; Novo Nordisk Foundation; National Institutes of Health (NIH) - USA; NIH National Institute of Diabetes & Digestive & Kidney Diseases (NIDDK); Indiana University System; Indiana University Bloomington