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Browsing MIT Open Access Articles by Title

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  • Giambalvo, Vince; Miller, Haynes R. (Mathematical Sciences Publishers, 2011-09)
    The relations of Barratt and Miller are shown to include all relations among the elements P[superscript i]χP[superscript n−i} in the mod p Steenrod algebra, and a minimal set of relations is given.
  • McKernan, James (Springer, 2010-04)
    We explore the circle of ideas connecting finite generation of the Cox ring, Mori dream spaces and invariant theory.
  • Sun, Hao Sheng; Maze, Ian; Dietz, David M.; Scobie, Kimberly N.; Kennedy, Pamela K.; Damez-Werno, Diane; Neve, Rachael L.; Zachario, Venetia; Shen, Li; Nestler, Eric J. (Society for Neuroscience, 2012-11)
    Dysregulation of histone modifying enzymes has been associated with numerous psychiatric disorders. Alterations in G9a (Ehmt2), a histone methyltransferase that catalyzes the euchromatic dimethylation of histone H3 at ...
  • Quintana, Lluís; Nieden, Nicole I. zur; Semino, Carlos Eduardo (Mary Ann Liebert, 2008-12)
    Cartilage is the first skeletal tissue to be formed during embryogenesis leading to the creation of all mature cartilages and bones, with the exception of the flat bones in the skull. Therefore, errors occurring during ...
  • Wang, Zhengyuan; Du, Jianguo; Lam, Siew H.; Mathavan, Sinnakarupan; Matsudaira, Paul T.; Gong, Zhiyuan (BioMed Central Ltd., 2010-06)
    Background The zebrafish intestine is a simple tapered tube that is folded into three sections. However, whether the intestine is functionally similar along its length remains unknown. Thus, a systematic structural and ...
  • Petroff, Alexander Peter; Sim, Min Sub; Liang, Biqing; Bosak, Tanja (United States National Academy of Sciences, 2009-05)
    Conical stromatolites are thought to be robust indicators of the presence of photosynthetic and phototactic microbes in aquatic environments as early as 3.5 billion years ago. However, phototaxis alone cannot explain the ...
  • Duong, Hai M.; Yamamoto, Namiko; Bui, Khoa; Papavassiliou, Dimitrios V.; Maruyama, Shigeo; Wardle, Brian L. (American Chemical Society (ACS), 2010-04)
    Carbon nanotube (CNT)−CNT contact and CNT distribution effects on anisotropic thermal transport in aligned CNT−polymer nanocomposites (PNCs) are studied using an off-lattice Monte Carlo numerical simulation. Inter-CNT ...
  • Raviv, T. Riklin; Ljosa, V.; Conery, A. L.; Ausubel, F. M.; Carpenter, A. E.; Golland, Polina; Wählby, C. (Springer-Verlag Berlin Heidelberg, 2010)
    We present a novel approach for extracting cluttered objects based on their morphological properties. Specifically, we address the problem of untangling Caenorhabditis elegans clusters in high-throughput screening experiments. ...
  • Winstein, Keith J.; Balakrishnan, Hari (Advanced Computing Systems Association, 2012-06)
    Mosh (mobile shell) is a remote terminal application that supports intermittent connectivity, allows roaming, and speculatively and safely echoes user keystrokes for better interactive response over high-latency paths. ...
  • Friedman, Robin Carl; Farh, Kyle Kai-How; Burge, Christopher B.; Bartel, David (Cold Spring Harbor Laboratory Press in association with The Genetics Society, 2008-10)
    MicroRNAs (miRNAs) are small endogenous RNAs that pair to sites in mRNAs to direct post-transcriptional repression. Many sites that match the miRNA seed (nucleotides 2–7), particularly those in 3′ untranslated regions ...
  • Frebel, Anna L.; Norris, John E.; Bessell, M. S.; Yong, David; Christlieb, N.; Barklem, P. S.; Asplund, M.; Murphy, Simon J.; Beers, Timothy C.; Ryan, S. G. (IOP Publishing, 2012-12)
    We report the discovery of 34 stars in the Hamburg/ESO Survey for metal-poor stars and the Sloan Digital Sky Survey that have [Fe/H] [< over ~]–3.0. Their median and minimum abundances are [Fe/H] = –3.1 and –4.1, respectively, ...
  • Frebel, Anna L.; Yong, David; Bessell, M. S.; Christlieb, N.; Asplund, M.; Beers, Timothy C.; Barklem, P. S.; Ryan, S. G.; Norris, John E. (IOP Publishing, 2012-12)
    We present a homogeneous chemical abundance analysis of 16 elements in 190 metal-poor Galactic halo stars (38 program and 152 literature objects). The sample includes 171 stars with [Fe/H] ≤ –2.5, of which 86 are extremely ...
  • Frebel, Anna L.; Yong, David; Norris, John E.; Bessell, M. S.; Christlieb, N.; Asplund, M.; Beers, Timothy C.; Barklem, P. S.; Ryan, S. G. (IOP Publishing, 2012-12)
    We examine the metallicity distribution function (MDF) and fraction of carbon-enhanced metal-poor (CEMP) stars in a sample that includes 86 stars with [Fe/H] ≤ –3.0, based on high-resolution, high signal-to-noise spectroscopy, ...
  • Frebel, Anna L.; Norris, John E.; Yong, David; Bessell, M. S.; Christlieb, N.; Asplund, M.; Gilmore, Gerard; Wyse, Rosemary F. G.; Beers, Timothy C.; Barklem, P. S.; Ryan, S. G. (IOP Publishing, 2012-12)
    We discuss the carbon-normal and carbon-rich populations of Galactic halo stars having [Fe/H] [< over ~] –3.0, utilizing chemical abundances from high-resolution, high signal-to-noise model-atmosphere analyses. The C-rich ...
  • Wu, Yi-Chieh; Bansal, Mukul S.; Kellis, Manolis; Rasmussen, Matthew D. (Cold Spring Harbor Laboratory Press, 2013-12)
    Accurate gene tree-species tree reconciliation is fundamental to inferring the evolutionary history of a gene family. However, although it has long been appreciated that population-related effects such as incomplete lineage ...
  • Syed, Zeeshan; Stultz, Collin M.; Kellis, Manolis; Indyk, Piotr; Guttag, John V. (Association for Computing Machinery (ACM), 2010-01)
    In this article, we propose a methodology for identifying predictive physiological patterns in the absence of prior knowledge. We use the principle of conservation to identify activity that consistently precedes an outcome ...
  • Cho, Taeg Sang; Levin, Anat; Durand, Fredo; Freeman, William T. (Institute of Electrical and Electronics Engineers, 2010-03)
    Object movement during exposure generates blur. Removing blur is challenging because one has to estimate the motion blur, which can spatially vary over the image. Even if the motion is successfully identified, blur removal ...
  • Rubinstein, Michael; Liu, Ce; Sand, Peter; Durand, Fredo; Freeman, William T. (Institute of Electrical and Electronics Engineers (IEEE), 2011-06)
    Motions can occur over both short and long time scales. We introduce motion denoising, which treats short-term changes as noise, long-term changes as signal, and re-renders a video to reveal the underlying long-term events. ...
  • Caruyer, Emmanuel; Aganj, Iman; Lenglet, Christophe; Sapiro, Guillermo; Deriche, Rachid (Hindawi Publishing Corporation, 2013-01)
    The acquisition of high angular resolution diffusion MRI is particularly long and subject motion can become an issue. The orientation distribution function (ODF) can be reconstructed online incrementally from diffusion-weighted ...
  • Dong, Shuonan; Williams, Brian Charles (Institute of Electrical and Electronics Engineers (IEEE), 2011-05)
    Commanding an autonomous system through complex motions at a low level can be tedious or impractical for systems with many degrees of freedom. Allowing an operator to demonstrate the desired motions directly can often ...
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