منابع مشابه
The Evolution of Blood-counting Techniques.
THE counting of blood-cells was one of the earliest methods of investigation introduced for the quantitative study of the blood, and for many years, of all the tests performed in clinical laboratories, it was probably the one most frequently requested. The story of the evolution of the blood count deserves, therefore, an honoured place in the history of medicine. The credit for performing the f...
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Implementing a comprehensive approach to decreasing tobacco use in a large health plan requires hard work and commitment on the part of many individuals. We found that major organisational change can be accomplished and sustained. Keys to our success included our decision to remove access barriers to our cessation programmes (including cost); obtaining top leadership buy-in; identifying account...
متن کاملCounting labeled transitions in continuous-time Markov models of evolution.
Counting processes that keep track of labeled changes to discrete evolutionary traits play critical roles in evolutionary hypothesis testing. If we assume that trait evolution can be described by a continuous-time Markov chain, then it suffices to study the process that counts labeled transitions of the chain. For a binary trait, we demonstrate that it is possible to obtain closed-form analytic...
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One of the key objectives of beyond 3rd generation mobile networks is the realization of enhanced end-user experience through the provision of rich multimedia services. Multimedia Broadcast/Multicast Services (MBMS) framework epitomizes the increasing popularity of such applications and is envisaged to play an instrumental role for the Long Term Evolution (LTE) proliferation in mobile market. F...
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The Omega polynomial(x) was recently proposed by Diudea, based on the length of strips in given graph G. The Sadhana polynomial has been defined to evaluate the Sadhana index of a molecular graph. The PI polynomial is another molecular descriptor. In this paper we compute these three polynomials for some infinite classes of nanostructures.
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ژورنال
عنوان ژورنال: Science
سال: 2006
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.312.5779.1442b