منابع مشابه
Differentiation by association: is a cell's fate determined by the company it keeps?
THE LOSS OF HEART MUSCLE during myocardial infarction is a major worldwide health issue, often leading to debilitating heart failure or death. Terminally differentiated cardiac muscle retains little if any capacity to undergo mitosis, and thus substantive regeneration of the heart after infarction does not occur. As such, mining the pluripotency of stem cells to regenerate lost heart muscle is ...
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I n severe and fatal asthma dramatic changes in airway structure have been described, collectively referred to as remodelling [1, 2]. Current dogma dictates that remodelling reflects aberrant repair in response to ongoing inflammation and injury. However, the interplay between inflammation and remodelling, and, more importantly, between airway structure and function remains elusive, such that w...
متن کاملJudging a Word by the Company it Keeps: The Use of Concordancing Software to Explore Aspects of the Mathematics Register
This paper explores the use of computer software such as databases and concordancing programs in the analysis of mathematical texts in the secondary classroom. It reports on research into aspects of the mathematics register at the individual word level, tracking the development of a single lexical item ‘diagonal’ through the various National Curriculum levels as presented within a particular Br...
متن کامل"A term is known by the company it keeps": On Selecting a Good Expansion Set in Pseudo-Relevance Feedback
It is well known that pseudo-relevance feedback (PRF) improves the retrieval performance of Information Retrieval (IR) systems in general. However, a recent study by Cao et al [3] has shown that a non-negligible fraction of expansion terms used by PRF algorithms are harmful to the retrieval. In other words, a PRF algorithm would be better off if it were to use only a subset of the feedback term...
متن کاملAn Atom is Known by the Company it Keeps: A Constructionist Learning Environment for Materials Science Using Agent-Based Modeling
This article reports on ‘‘MaterialSim’’, an undergraduate-level computational materials science set of constructionist activities which we have developed and tested in classrooms. We investigate: (a) the cognition of students engaging in scientific inquiry through interacting with simulations; (b) the effects of students programming simulations as opposed to only interacting with ready-made sim...
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ژورنال
عنوان ژورنال: Current Opinion in Infectious Diseases
سال: 2011
ISSN: 0951-7375
DOI: 10.1097/qco.0b013e328349ac4f