8017期

最新文章

• A secondary atmosphere on the rocky exoplanet 55 Cancri e AI翻译
  作者：Hu, Renyu; Bello-Arufe, Aaron; Zhang, Michael; Paragas, Kimberly; Zilinskas, Mantas; van Buchem, Christiaan; Bess, Michael; Patel, Jayshil; Ito, Yuichi; Damiano, Mario; Scheucher, Markus; Oza, Apurva V.; Knutson, Heather A.; Miguel, Yamila; Dragomir, Diana; Brandeker, Alexis; Demory, Brice-Olivier
  作者单位：California Institute of Technology; National Aeronautics & Space Administration (NASA); NASA Jet Propulsion Laboratory (JPL); California Institute of Technology; University of Chicago; Leiden University - Excl LUMC; Leiden University; University of New Mexico; Stockholm University; National Institutes of Natural Sciences (NINS) - Japan; National Astronomical Observatory of Japan (NAOJ); University of London; University College London; University of Bern; University of Bern
  摘要：Characterizing rocky exoplanets is a central aim of astronomy, and yet the search for atmospheres on rocky exoplanets has so far resulted in either tight upper limits on the atmospheric mass1-3 or inconclusive results4-6. The 1.95REarth and 8.8MEarth planet 55 Cancri e (abbreviated 55 Cnc e), with a predominantly rocky composition and an equilibrium temperature of around 2,000 K, may have a volatile envelope (containing molecules made from a combination of C, H, O, N, S and P elements) that ac...
• Detecting hallucinations in large language models using semantic entropy AI翻译
  作者：Farquhar, Sebastian; Kossen, Jannik; Kuhn, Lorenz; Gal, Yarin
  作者单位：University of Oxford
  摘要：Large language model (LLM) systems, such as ChatGPT 1 or Gemini 2 , can show impressive reasoning and question-answering capabilities but often 'hallucinate' false outputs and unsubstantiated answers 3,4 . Answering unreliably or without the necessary information prevents adoption in diverse fields, with problems including fabrication of legal precedents 5 or untrue facts in news articles 6 and even posing a risk to human life in medical domains such as radiology 7 . Encouraging truthfulness t...
• Improve collaboration for schizophrenia AI翻译
  作者：Moren, Constanza
  作者单位：University of Barcelona; Hospital Clinic de Barcelona; IDIBAPS; University of Barcelona
• Conference visa processes need urgent reform AI翻译
  作者：Moronta-Barrios, Felix
  作者单位：International Center for Genetic Engineering & Biotechnology (ICGEB)
• Why museums should repatriate fossils AI翻译
  作者：Howe, Craig; Rieppel, Lukas
  作者单位：Brown University
  摘要：The legacy of a palaeontology expedition into Native American lands 150 years ago should prompt a rethink of where and how fossil collections are curated.
• 'It can feel like there's no way out' - political scientists face pushback on their work AI翻译
  作者：Lewis, Dyani; Abbott, Alison
  摘要：In a year in which numerous countries are going to the polls, many election-watching scientists are under pressure.
• Myelin plasticity in the ventral tegmental area is required for opioid reward AI翻译
  作者：Yalcin, Belgin; Pomrenze, Matthew B.; Malacon, Karen; Drexler, Richard; Rogers, Abigail E.; Shamardani, Kiarash; Chau, Isabelle J.; Taylor, Kathryn R.; Ni, Lijun; Contreras-Esquivel, Daniel; Malenka, Robert C.; Monje, Michelle
  作者单位：Stanford University; Stanford University; Howard Hughes Medical Institute
  摘要：All drugs of abuse induce long-lasting changes in synaptic transmission and neural circuit function that underlie substance-use disorders 1,2 . Another recently appreciated mechanism of neural circuit plasticity is mediated through activity-regulated changes in myelin that can tune circuit function and influence cognitive behaviour 3-7 . Here we explore the role of myelin plasticity in dopaminergic circuitry and reward learning. We demonstrate that dopaminergic neuronal activity-regulated myel...
• A manifesto to make the UK a science superpower AI翻译
  作者：Nurse, Paul
  作者单位：Francis Crick Institute
• Graphene device unites logic with memory AI翻译
  作者：Jaiswal, Manu
  作者单位：Indian Institute of Technology System (IIT System); Indian Institute of Technology (IIT) - Madras
• The time between Palaeolithic hearths AI翻译
  作者：Herrejon-Lagunilla, Angela; Villalain, Juan Jose; Pavon-Carrasco, Francisco Javier; Serrano Sanchez-Bravo, Mario; Sossa-Rios, Santiago; Mayor, Alejandro; Galvan, Bertila; Hernandez, Cristo M.; Mallol, Carolina; Carrancho, Angel
  作者单位：Universidad de Burgos; Complutense University of Madrid; Complutense University of Madrid; Consejo Superior de Investigaciones Cientificas (CSIC); CSIC-UCM - Instituto de Geociencias (IGEO); University of Valencia; Universitat d'Alacant; Universidad de la Laguna; Universidad de la Laguna; University of California System; University of California Davis; Universidad de Burgos
  摘要：Resolving the timescale of human activity in the Palaeolithic Age is one of the most challenging problems in prehistoric archaeology. The duration and frequency of hunter-gatherer camps reflect key aspects of social life and human-environment interactions. However, the time dimension of Palaeolithic contexts is generally inaccurately reconstructed because of the limitations of dating techniques(1), the impact of disturbing agents on sedimentary deposits(2) and the palimpsest effect(3,4). Here ...