Thus, the energy position of the electron ground state shifts upwards, and its density of probability spreads over a larger region.
A common measure of how much a probability distribution is spread over its definition domain (here the 20 amino-acids) is the Shannon entropy: Here, we define the effective number of amino-acids, (or the effective size of the amino-acid alphabet) implied by the stationary distribution π as the exponential of its Shannon entropy.
The model was used to calculate a probability map for the spread of the SM on the assumption that it enters the non-Russian parts of Europe in infected wooden materials imported through border stations between Russia and other European countries.
Furthermore, the PTH state provides the benefit to the species of maintaining seed set as sexual 'clones' with a greater probability of spreading over a larger area versus more typical methods of asexual propagation.
The standard deviation is one way of summarizing the spread of a probability distribution; it relates directly to the degree of uncertainty associated with predicting the value of a random variable.
The entropy S reflects the spread of a probability distribution regardless of shape complexity.
Each rotatable bond was assigned a set of conformer modes, or in statistical thermodynamic terms, macrostates ; each macrostate comprising a mean torsional angle, a spread and a probability.
If it is for instance 5.7, five healthy trees become capable of spreading (with certainty) and the sixth tree becomes capable of spreading with a probability of 0.7.
They are dangerous not only because of direct effects on the currently infected cultures, i.e. their devastation, but also due to a high probability of spreading the phage progeny throughout a whole laboratory or plant, which causes a real danger for further cultivations.
Perennial plants could potentially have a higher probability of spreading their genetic condition because they persist for a longer period.
