rdlc data matrix

rdlc data matrix

rdlc data matrix

rdlc data matrix

rdlc data matrix

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rdlc data matrix,
rdlc data matrix,
rdlc data matrix,
rdlc data matrix,
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The solution is for the PE to advertise to the RR the set of RTs for which it is interested in receiving updates (typically, these are the set of RTs used in all the import policies in all VPNs on the PE) As a result, the RR only advertises to the PE the routes that are tagged with these RTs, resulting in less work for both the RR, which generates less updates, and the PE, which processes less updates2 Two mechanisms are available for achieving this goal: outbound route filtering (ORF) [ORF] and route-target filtering [RT-CONSTR] The difference between the two is the scope of the filter advertisements With ORF, the scope is limited to two directly connected neighbors For route-target filtering, the filtering information is propagated in the same way as routing information and can cross multiple hops and AS boundaries.

The Fresnel lens has a short focal length. A light source located at this focus produces a single, concentrated beam of light with parallel rays. When the light source is positioned at points other than the primary focus of the optical system, the lamp-refractor combination produces either a spread or asymmetric distribution (figure 9.20). Glasses and plastics that incorporate a regular pattern of small prisms or other refractive elements are called prismatic lenses. They do not concentrate the distribution of light the way Fresnel lenses do; prismatic lenses spread the distribution of the source but also reduce its luminance, providing a degree of glare control. Total Internal Reflection Total internal reflection occurs when light passes into a transparent medium, such as glass or plastic, at an appropriate angle and travels inside the medium repeatedly reflecting from side to side. Edge lighting and light transmission through rods are examples of this phenomenon. Fiber optics With fiber optics, light entering one side of a glass or plastic fiber of optical quality is transmitted to the other end by the process of total internal reflection. Light rays that strike the core at the acceptance angle are reflected back and forth inside the core and travel to the other end of the fiber in a zigzag path of successive reflections. In use, a single, large-diameter fiber is impractical because it lacks flexibility. To increase flexibility, a large number of smalldiameter fibers are clustered together in a bundle. In order to prevent light leaking from one fiber to another, each is coated with a transparent sheath that has a lower refractive index than the fiber (figure 9.21). The sheathing process protects the surfaces of the fiber and allows the bundle to be embed115

12. While still in Command mode, remove the characters c, e, and g but leave the blank lines in their place; in other words, do not delete the entire line, just the characters. Then, go back and remove the blank lines. This situation is an opportunity to use two of the delete functions. Position the cursor on the c; press x. Position the cursor on the e; press x. Position the cursor on the g; press x. Do the following twice: Position the cursor on a blank line and press dd. 13. Now, replace the character h with z. Position the cursor on the h. Press r. Press z. 14. Assume that you decided you do not want to save the changes to the characters. Quit the editing session without saving the changes made since the last save.

In handwriting recognition systems, the user writes on a special pad with a pressuresensitive pen The dynamic movement of the pen is described by tens of parameters, such as the pressure exercised on the pad, the speed and direction of the movement, the accelerations and decelerations, and the angle of the letter One limitation of handwriting recognition is that the rate of false rejects may be too high Keystroke recognition techniques measure an individual s typing patterns in terms of rhythm, speed, and duration and pressure of keystrokes The method for parameter estimation requires several repetitions of a predetermined sequence of characters (for example, the log-in and the password) Facial scans are used for on-line or off-line identification In the latter case, a reference image, whose size ranges from 100 to 800 octets, is stored on a smart card in the user s possession.

ORF was introduced in BGP as a way to minimize the number of updates that are sent between two peers, long before VPNs became popular However, in the context of VPNs it is useful to be able to propagate the filtering information automatically, which is how route-target filtering came into being Let us take a look at an example where route-target filtering is particularly useful Figure 83 shows a US-based network with PEs on both the east coast and the west coast The network has two route reflectors, RR1 and RR2, one on each coast (for simplicity, let us ignore the extra reflectors used for redundancy) PEs on each coast peer with the local route reflector (in the figure, the solid.