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1 Under System, the default Central Management Server (CMS) will appear If you have multiple BusinessObjects implementations, enter the name of the CMS in the System box 2 Enter your user name in the box provided When authenticating against BusinessObjects Enterprise, this is not case sensitive 3 Enter your password For security purposes, this is displayed as asterisk as you enter each character (*) Your password may be case sensitive and may be a combination of characters and numbers 4 Choose the authentication source from the drop-down box Enterprise is the default and refers to the BusinessObjects Enterprise repository If your administrator has enabled authentication to be the same as your LAN login, choose Windows NT 5 Click Log On The first time you log in to InfoView, you may be prompted to change your password, as shown in the following illustration You also will receive this prompt if the BusinessObjects Enterprise administrator requires you to change your password on a periodic basis, for example, every 90 days

lim Rm ( d , b , k ) = d W (1, b 2 r , k )

13:

As the output confirms, each catch clause responds only to its own type of exception In general, catch clauses are checked in the order in which they occur in a program Only the first matching clause is executed All other catch blocks are ignored

17:

Occasionally, you might want to catch all exceptions, no matter the type To do this, use a catch clause that specifies no exception type or variable It has this general form: catch { // handle exceptions } This creates a catch all handler that ensures that all exceptions are caught by your program Here is an example of a catch all exception handler Notice that it catches both the IndexOutOfRangeException and the DivideByZeroException generated by the program:

r =1

// Use the "catch all" catch using System; class ExcDemo5 { static void Main() { // Here, numer is longer than denom int[] numer = { 4, 8, 16, 32, 64, 128, 256, 512 }; int[] denom = { 2, 0, 4, 4, 0, 8 }; for(int i=0; i < numerLength; i++) { try { ConsoleWriteLine(numer[i] + " / " + denom[i] + " is " + numer[i]/denom[i]); } catch { // A "catch-all" catch ConsoleWriteLine("Some exception occurred"); } } } }

To log in as a guest, leave the user name and password boxes blank If you need to change your password at some other point, choose Preferences from the Header panel (shown in Table 17-1), and then select the Password tab

The output is shown here:

(1371)

4 / 2 is 2 Some exception 16 / 4 is 4 32 / 4 is 8 Some exception 128 / 8 is 16 Some exception Some exception occurred

Password settings are determined by the BusinessObjects XI administrator (see 13) or, when using external authentication, by your company security administrator The administrator can require your password to be a minimum length The system may also count back a certain number to prevent you from re-using the same password When you enter the wrong password after so many attempts, your account will become disabled Your account may be disabled permanently until you contact an administrator or disabled for a defined period of time If you enter the incorrect user name or password (or the right user name but against an incorrect authentication source), you will receive the following error message: Account Information Not Recognized: An error occurred at the server Enterprise authentication could not log you on Please make sure your logon information is correct If you eventually remember the correct user name and password and the account has been disabled, you will receive the following error message: Account Information Not Recognized: An error occurred at the server The user account has been disabled

Part I:

As will be seen in the example below, the envelope of Ri+1 always lies above that of Ri until the value of k exceeds some crossover value Above this value of k, the envelope of Ri+1 lies below that of Ri In this case, a limit R is reached which provides the lowest envelope available by this method, although it is possible that other basic curves may provide a lower envelope For the high-speed systems in which vibration is typically a major concern, however, k will be suf ciently low enough so that the lowest