Current Issue 当前问题
- December 24, 2024 12月 24， 2024
- vol. 121 第 121 卷
- no. 52 编号 52
- Infectious diseases are spreading on an unprecedented scale through the increased mobility of their hosts. Our general theory reveals that, when host populations experiencing different local conditions are linked by movement networks, more ...The epidemiology and evolution of diseases unfold in populations that are rarely homogeneous. Instead, hosts infected by pathogens often form metapopulations, in which local populations connected by the movement of hosts experience different demographic ...
传染病通过宿主的流动性增加，以前所未有的规模传播。我们的一般理论表明，当经历不同当地条件的宿主种群通过移动网络联系在一起时，更多的......疾病的流行病学和演变在很少同质的人群中展开。相反，被病原体感染的宿主通常会形成元种群，其中通过宿主运动联系在一起的当地种群经历了不同的人口统计学...... - Visual perception relies on the reliable representation of the world and starts in the retina. While single cells encode specific, local stimulus features, it is the activity of the population as a whole that drives perception and action. ...Everything that the brain sees must first be encoded by the retina, which maintains a reliable representation of the visual world in many different, complex natural scenes while also adapting to stimulus changes. This study quantifies whether and how the ...
视觉感知依赖于世界的可靠表示，并从视网膜开始。虽然单个细胞编码特定的局部刺激特征，但驱动感知和行动的是整个种群的活动。大脑看到的一切都必须首先由视网膜编码，视网膜在许多不同、复杂的自然场景中保持对视觉世界的可靠表示，同时也适应刺激的变化。本研究量化了 ...
about pnas
关于 PNAS
PNAS is one of the world's most-cited and comprehensive multidisciplinary scientific journals.
PNAS 是世界上引用次数最多、综合性强的多学科科学期刊之一。
The Proceedings of the National Academy of Sciences (PNAS), a peer reviewed journal of the National Academy of Sciences (NAS), is an authoritative source of high-impact, original research that broadly spans the biological, physical, and social sciences. The journal is global in scope and submission is open to all researchers worldwide.
美国国家科学院院刊 （PNAS） 是美国国家科学院 （NAS） 的同行评审期刊，是广泛涵盖生物、物理和社会科学的高影响力原创研究的权威来源。该期刊具有全球范围，向全球所有研究人员开放投稿。
In the News 新闻报道
- Emotions coordinate our behavior and physiological states during survival-salient events and pleasurable interactions. Even though we are often consciously aware of our current emotional state, such as anger or happiness, the mechanisms giving ...Emotions are often felt in the body, and somatosensory feedback has been proposed to trigger conscious emotional experiences. Here we reveal maps of bodily sensations associated with different emotions using a unique topographical self-report method. In ...
情绪在生存显著事件和愉快的互动中协调我们的行为和生理状态。尽管我们经常有意识地意识到我们当前的情绪状态，例如愤怒或快乐，但给予......情绪通常在体内感受到，并且已经提出体感反馈来触发有意识的情绪体验。在这里，我们使用独特的地形自我报告方法揭示了与不同情绪相关的身体感觉图谱。在。。。 - Giant meteorite impacts during Earth’s early history likely had significant effects on early life. We studied the effects on the surface environment and life of a Paleoarchean impactor ~50 to 200× larger than the famous K-Pg impactor. The ...Large meteorite impacts must have strongly affected the habitability of the early Earth. Rocks of the Archean Eon record at least 16 major impact events, involving bolides larger than 10 km in diameter. These impacts probably had severe, albeit temporary, ...
地球早期历史中的巨型陨石撞击可能对早期生命产生了重大影响。我们研究了比著名的 K-Pg 撞击器大 ~50 至 200× 的古太古宙撞击器对表面环境和寿命的影响。这。。。大型陨石撞击一定强烈影响了早期地球的宜居性。太古宙岩石记录了至少 16 次重大撞击事件，涉及直径大于 10 公里的柱状物。这些影响可能具有严重但暂时的...... - An influential study suggests that Black newborns experience much lower mortality when attended by Black physicians after birth. Using the same data, we replicate those findings and estimate alternative models that include controls for very ... The racial gap in infant mortality is a pressing public-health concern, and [B. N. Greenwood et al., Proc. Natl. Acad. Sci. U.S.A. 117, 21194–21200 (2020), 10.1073/pnas.1913405117] suggest that Black newborns are more likely to survive if cared for by ...
一项有影响力的研究表明，黑人新生儿出生后由黑人医生照顾时的死亡率要低得多。使用相同的数据，我们复制了这些发现并估计了包括非常 ...婴儿死亡率的种族差距是一个紧迫的公共卫生问题，[B. N. Greenwood et al.， Proc. Natl. Acad. Sci. U.S.A.117， 21194–21200 （2020）， 10.1073/pnas.1913405117] 表明，如果由......
Front Matter 前言
Featured QnAs 特色 QnAs
Recent Issues 最近的问题
Submit to PNAS 提交给 PNAS
Submit to the Proceedings of the National Academy of Sciences (PNAS) and have your research discovered by millions of researchers in the biological, physical, and social sciences.
提交给美国国家科学院院刊 （PNAS），让生物、物理和社会科学领域的数百万研究人员发现您的研究。