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With the mathematical theory of Yuanjian, this paper proposes a mathematical formulation of the secondary structure of nucleic acid The goal of this article is to represent and interpret the genetic structure at the molecular level mathematically, and to explore the fundamental principle of molecular biology and further research the disease mechanism at the system level. Propositions based on the...
It is an important method to evaluate the quality of statistical data based on statistical distributions. And in practice, the key work of this method is to find out the statistic's distribution. Given the advantage of bootstrap in exploring the statistic's distribution, we introduce the bootstrap to the evaluation of the quality of statistical data, and give a general frame of test for quality of...
In order to calibrate the frequency dependence of ac standard resistor more accurately, improvements of double helix standard resistor and Kelvin resistance bridge at NIM are made and described in this paper. The experimental results show that the dc resistance stability of the AC/DC calculable resistor is enhanced by one order and the measurement uncertainty of the bridge is decreased.
With the development of ICT, education has gained great progress and human learning behaviors have been influenced. For instance, the educational conceptions have been changed; the learning mode has been innovated and the learning environment has been improved. In a word, ICT makes all aspects of education different from what it used to be. The author observes the changes of learning mode and discusses...
As a consequence of globalization, facilitypsilas location selection has become a markedly complicated problem. This problem is one of the most difficult combinatorial NP-hard optimization problems. Historically, this kind of problems have been usually solved by linear programming or metaheuristics methods such as genetic algorithms (GA), simulated annealing (SA), particle swarm optimization (PSO)...
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