Copy-exactly approach

In dealing with the SGS terms, Revstedt et al. (1998, 2000) and Revstedt and Fuchs (2002) did not use any model rather, they assumed these terms were just as small as the truncation errors in the numerical computations. This heuristic approach lacks physics and does not deserve copying. A most welcome aspect of LES is that the SGS stresses may be conceived as being isotropic, i.e., insensitive to effects of the larger scales, to the way the turbulence is induced and to the complex and varying boundary conditions of the flow domain. Exactly this... 

Where system obsolescence forces a need to transfer electronic documentation from one system format to another, the process must be recorded step by step and its integrity verified. An exact copy must be verified prior to any destruction of the original media. The obsolete system could alternatively be maintained as a legacy system, an approach that can be expensive and one that might still require transfer to a new system or format at a later date when maintenance becomes impractical. 

Next, and this is the most important, from the viewpoint of physics, in copying the chemical concept of dismutation reaction to which this law corresponds, the classical approach gives credence to the existence of quantities of electron-hole pairs predicted by this reaction. However, their amount must be immediately neglected for keeping the system of equations amenable to a solution (i.e., ideal system) In addition, to consider a third species in equilibrium with the two others is contrary to the definition of a hole, which is the exact opposite of an electron, and therefore contrary to the fact that both annihilate. This is the kind of long-lasting paradox in physics (However, it mnst be acknowledged that the concept of separability is still not very well mastered in physics, even in quantum physics.)... 

The goal of this study is to use an engineering approach to develop insights into the internal design of a simplest possible self-replicator (SSR). The SSR is defined for the purpose of this study as an autonomous artifact that has the ability to obtain material input from its environment, grow, and create an exact replica of itself. The replica should inherit the ability from its mother SSR to create, in its turn, an exact copy of itself. 

For any DNA-directed enzyme synthesis in vitro, the conditions in the living cell should be more or less exactly copied. This is best approached in an extract prepared simply by disruption of the cells. Indeed such a crude extract supports the synthesis of enzymes (Schweiger et al., 1972). Unlike in intact cells, nucleases and proteases are free to attack nucleic acids and the products... 

Firstly, you can focus students attention on the core nature of models by indicating similarities and differences between model and target explicitly (see below) and asking students to carry out modelling tasks (see the next sub-section). This teaching approach can support students to change their conception of models as exact small-scale copies of reality. 

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