منابع مشابه
Break to Make a Connection
Meiosis is the cell division program utilized by most sexually reproducing organisms as a strategy to produce haploid gametes (i.e., sperm and eggs) from diploid parental cells. As suggested by its name, which stems from the Greek word meaning ‘‘to diminish or reduce’’, meiosis reduces the chromosome number by half. This is accomplished by following a single round of DNA replication with two co...
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F or embryonic stem cells, keeping in touch with the neighbors is crucial. Li et al. (1) have teased out a regulatory network that helps the cells stay close, thus guaranteeing that they remain pluripotent. As long as they have congenial culture conditions, human embryonic stem cells (hESCs) can divide indefi nitely without differentiating. Researchers have identifi ed some of the cells’ requir...
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It is generally accepted that data encryption is the key role in current and future technologies. Many Public key cryptography schemes were presented, divided into different classes depending on a specific mathematical problem. Cryptography plays an important task in accomplishing information security. It is used for encrypting or signing data at the source before transmission, and then decrypt...
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Many techniques have been used to model financial time series data such as stock prices, including linear and nonlinear statistical methods and more inscrutable methods such as neural nets. The hope is that if the time series can be predicted fairly well, the predictions can be used to make profitable buy/sell/hold decisions. Time series modelling may work well for physical systems, such as blo...
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A trip-let is an object as shown on the cover of Hofstadter’s book Gödel, Escher, Bach: a solid, threedimensional object that, when viewed from three orthogonal directions, shows three different letters. In this paper we consider two problems related to the construction of such objects for a given set of three letters. First, we want to know whether the silhouettes of the object correspond to t...
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ژورنال
عنوان ژورنال: The Journal for Nurse Practitioners
سال: 2016
ISSN: 1555-4155
DOI: 10.1016/j.nurpra.2016.02.002