Cut-and-paste moves

Only two broad types of useful non-local moves are known at present pivot moves, and cut-and-paste moves. 

In a cut-and-paste move, we cut the walk into two or more pieces, invert and/or reflect and/or permute the pieces, and finally reassemble the pieces. For example, one may invert the subwalk (Fig. 2.8) ... 

Empirically, the pivot and cut-and-paste moves have a reasonable acceptance probability even at large N, of order N with p typically of order 0.1-0.4. The heuristic reason is that these moves conserve most of the chain structure (and hence its self-avoidance), except near the pivot point or cut point(s). As a result, the acceptance probability for a move involving a single pivot or cut point is roughly similar to that encountered when concatenating... 

In the case of pivot or cut-and-paste moves, one maintains two linear lists—one active and one scratch —together with a flag saying which is currently which. The coordinates of a proposed new walk are successively calculated and placed in the scratch list, and self-avoidance is simultaneously tested (see Section 2.7.1.2) if the self-avoidance test is passed, the flag is flipped and the scratch list now becomes active . 

Testing action conformance at runtime isn t as easy as just inserting a few lines of code to monitor the postconditions. The problem is that nowhere does my user explicitly say to my implementation, Now I want to do a setSum. It s the same with our other examples A user doesn t say to the drawing program, Now I m going to move a shape from one drawing to another. Rather, the user just uses the select, cut, and paste operations. 

Word processors usually have an array of features designed to make editing documents easy. In addition to the simple editing procedures described above, the program usually allows blocks of text to be moved ( cut and paste ), copied or deleted. 

To Cut and Paste by Using Drag-and-Drop Select the range of cells to be moved. 

Thus DNA transposons move by a cut-and-paste mechanism, whereas retrotransposons move by a copy-and-paste mechanism. 

Since McClintock s early work on mobile elements in corn, transposons have been identified in other eukaryotes. For Instance, approximately half of all the spontaneous mutations observed in Drosophila are due to the Insertion of mobile elements. Although most of the mobile elements in Drosophila function as retrotransposons, at least one—the P element—functions as a DNA transposon, moving by a cut-and-paste mechanism similar to that used by bacterial insertion sequences. Current methods for constructing transgenic Drosophila depend on engineered, high-level expression of the P-element transposase and use of the P-element Inverted terminal repeats as targets for transposition. 

Eukaryotic transposons move in a nonreplicative manner via excision and integration (cut and paste). For transposition, the transposase binds to the IRs and cleaves the DNA, thereby precisely excising the transposon. Additionally, the transposase binds to the target DNA, introducing a staggered cut, leading to... 

Figure 8. A screen dump from Microsoft Word on the Apple Macintosh, illustrating the integration of output from a chemical database apphcation, as a graphical table, with a word processing application. The table was moved into Word via the cHpboard (cut and paste)...

These algorithms were devised by Dubins, Madras, Orlitsky, Reeds and Shepp. In dimension d = 2 the simplest cut-and-paste algorithm uses two moves ... 

There are three types of data that can be entered in the cells of the spreadsheet number, date/time, and text. For multiple entries of serial number with constant increment, enter the initial value into the first cell, highlight the cells, and select Edit -> Fill -> Series. To fill multiple entries of the same value into a range, enter the value into the first cell, move the pointer to the right-hand corner of the active cell to activate fill handle (a bold crosshair), and drag it through the range. Data are edited with the usual cut, copy, and paste operations in the Edit menu and the decimal places of scientific numbers is controlled via dialog box in Format -> Cells. 

A block of cells can be selected by moving the cursor to the upper left cell of the block and then moving it to the opposite corner of the block while holding down the left mouse button ( dragging the cursor). You can also drag the cursor in the opposite direction. The contents of the cell or block of cells can then be cut or copied into the clipboard, using the Cut command or the Copy command under the Home tab. The contents of the clipboard can be pasted into a new location. One selects the upper left cell of the new block of cells and then uses the Paste command under the Home tab to paste the clipboard contents into the workbook. If you put something into a set of cells and want to remove it, you can select the cells and then press the Delete key. 

Proceed as before, select and click the file HDIS.001 in the directory D NMRDATA TEST1 you want to move and click it. Click Edit and then Cut to move the file. Open now the directory D NMRDATA TEST2 where you want to place the file, click Edit and then Paste. Check the new entry in the TEST2 subdirectory. 

When you choose New Window, a second window of the active document is opened. You can then re-size and move the windows so that the desired parts of the worksheet can be seen at the same time. This is useful if you want to Cut or Copy several cell ranges and then Paste them into another area of a worksheet, but the two areas of the worksheet are far apart. 

---