博碩士論文查詢聯邦系統首頁 聯絡信箱 關於我們 加入我們

dspace.mit.edu 檢索結果共 84617 筆,本頁資料從第 97 筆到第 108 筆

The ability to recognize the actions of others from visual input is essential to humans' daily lives. The neural computations underlying action recognition, however, are still poorly understood. We use magnetoencephalography (MEG) decoding and a computational model to study action recognition from a novel dataset of well-controlled, naturalistic videos of five actions (....

By Leyla Isik,Andrea Tacchetti,Tomaso Poggio--Center for Brains, Minds and Machines (CBMM), arXiv--2016-01-12
發佈到Facebook發佈到Plurk

Eddy-permitting simulations are used to show that basinlike gyres can be observed in the large-scale barotropic flow of a wind-driven channel with a meridional topographic ridge. This is confirmed using both two-layer quasigeostrophic and 25-level primitive equation models at high horizontal resolution. Comparing results from simulations with and without the topographic....

By Louis-Philippe Nadeau,Raffaele Ferrari--American Meteorological Society--2016-01-11
發佈到Facebook發佈到Plurk

While a quantitative climate theory of tropical cyclone formation remains elusive, considerable progress has been made recently in our ability to simulate tropical cyclone climatologies and to understand the relationship between climate and tropical cyclone formation. Climate models are now able to simulate a realistic rate of global tropical cyclone formation, although....

By Kerry Andrew Emanuel--American Meteorological Society--2016-01-11
發佈到Facebook發佈到Plurk

The CRISPR/Cas9 system has revolutionized mammalian somatic cell genetics. Genome-wide functional screens using CRISPR/Cas9-mediated knockout or dCas9 fusion-mediated inhibition/activation (CRISPRi/a) are powerful techniques for discovering phenotype-associated gene function. We systematically assessed the DNA sequence features that contribute to single guide RNA (sgRNA....

By Han Xu,Tengfei Xiao,Chen-Hao Chen,Wei Li,Clifford A. Meyer,Qiu Wu,Di Wu,Le Cong,Fen Zhang--Cold Spring Harbor Laboratory Press--2016-01-11
發佈到Facebook發佈到Plurk

Streptococcus pneumoniae is a leading cause of pneumonia and one of the most common causes of death globally. The impact of S. pneumoniae on host molecular processes that lead to detrimental pulmonary consequences is not fully understood. Here, we show that S. pneumoniae induces toxic DNA double-strand breaks (DSBs) in human alveolar epithelial cells, as indicated by at....

By Prashant Rai,Ian Jun Jie Tay,Na Li,Shelley Ackerman,Fang He,Jimmy Kwang,Vincent Chow--National Academy of Sciences (U.S.)--2016-01-11
發佈到Facebook發佈到Plurk

Long noncoding RNAs (lncRNAs) have been implicated in numerous cellular processes including brain development. However, the in vivo expression dynamics and molecular pathways regulated by these loci are not well understood. Here, we leveraged a cohort of 13 lncRNA-null mutant mouse models to investigate the spatiotemporal expression of lncRNAs in the developing and adul....

By Loyal A. Goff,Abigail F. Groff,Martin Sauvageau,Zachary Trayes-Gibson,Diana B. Sanchez-Gomez,Michae M--National Academy of Sciences (U.S.)--2016-01-11
發佈到Facebook發佈到Plurk

Guiding surface electromagnetic waves around disorder without disturbing the wave amplitude or phase is in great demand for modern photonic and plasmonic devices, but is fundamentally difficult to realize because light momentum must be conserved in a scattering event. A partial realization has been achieved by exploiting topological electromagnetic surface states, but t....

By Su Xu,Hongyi Xu,Hanhong Gao,Yuyu Jiang,Faxin Yu,John D. Joannopoulos,Hongsheng Chen,Han Sun--National Academy of Sciences (U.S.)--2016-01-11
發佈到Facebook發佈到Plurk

Repeated stress has been suggested to underlie learning and memory deficits via the basolateral amygdala (BLA) and the hippocampus; however, the functional contribution of BLA inputs to the hippocampus and their molecular repercussions are not well understood. Here we show that repeated stress is accompanied by generation of the Cdk5 (cyclin-dependent kinase 5)-activato....

By Damien Rei,Xenos Mason,Jinsoo Seo,Andrii Rudenko,Jun Wang,Sandra Siegert,Sukhee Cho,Karl Deisseroth--National Academy of Sciences (U.S.)--2016-01-11
發佈到Facebook發佈到Plurk

The signal-to-noise ratio (SNR), a commonly used measure of fidelity in physical systems, is defined as the ratio of the squared amplitude or variance of a signal relative to the variance of the noise. This definition is not appropriate for neural systems in which spiking activity is more accurately represented as point processes. We show that the SNR estimates a ratio ....

By Gabriela Czanner,Sridevi V. Sarma,Demba Ba,Uri T. Eden,Wei Wu,Emad Eskandar,Hubert H Lim--National Academy of Sciences (U.S.)--2016-01-11
發佈到Facebook發佈到Plurk

The premotor cortex (PM) is known to be a site of visuo-somatosensory integration for the production of movement. We sought to better understand the ventral PM (PMv) by modeling its signal encoding in greater detail. Neuronal firing data was obtained from 110 PMv neurons in two male rhesus macaques executing four reach-grasp-manipulate tasks. We found that in the large ....

By Rahul Agarwal,Nitish V. Thakor,Sridevi V. Sarma,Steve G. Massaquoi--Society for Neuroscience--2016-01-11
發佈到Facebook發佈到Plurk

Gate-modulated and laser-dependent Raman spectroscopy have been widely used to study q = 0 zone center phonon modes, their self-energy, and their coupling to electrons in graphene systems. In this work we use gate-modulated Raman of q ≠ 0 phonons as a technique to understand the nature of five second-order Raman combination modes observed in the frequency range of 170....

By K. Sato,R. Saito,P. T. Araujo,Daniela Lopes Mafra,Jing Kong,Mildred Dresselhaus--American Physical Society--2016-01-11
發佈到Facebook發佈到Plurk

Optical cavities with multiple tunable resonances have the potential to provide unique electromagnetic environments at two or more distinct wavelengths—critical for control of optical processes such as nonlinear generation, entangled photon generation, or photoluminescence (PL) enhancement. Here, we show a plasmonic nanocavity based on a nanopatch antenna design that ....

By Gleb M. Akselrod,Tian Ming,Christos Argyropoulos,Thang B. Hoang,Yuxuan Lin,Xi Ling,David R. Smith--American Chemical Society (ACS)--2016-01-11
發佈到Facebook發佈到Plurk


 

計畫贊助者: