The Job Market and Salary Outlook in Software

Creation USS Code 128 in Software The Job Market and Salary Outlook

There is a nal exam at the end of this course. It contains questions drawn uniformly from all the chapters in the book. Take it when you have nished all four sections, all four section tests, and all of the chapter quizzes. A satisfactory score is at least 75 percent correct answers. With the section tests and the nal exam, as with the quizzes, have a friend tell you your score without letting you know which questions you missed. That way, you will not subconsciously memorize the answers. You can check to see where your knowledge is strong and where it is not. I recommend that you complete one chapter a week. An hour or two daily ought to be enough time for this. When you re done with the course, you can use this book, with its comprehensive index, as a permanent reference. Suggestions for future editions are welcome. Now, work hard! But, be sure to have fun! Best wishes for your success. The Hon. Dr. Dale Pierre Layman, PhD

Let s do this. Click the New button, select SMTP Address, click OK, and enter the proxy address as @mtitworld.com (Figure 11.4). Click OK to define the new proxy address and return to the Default Policy Properties Sheet (Figure 11.2). Note that the new proxy address appears in the Generation Rules listbox but is unchecked, that is, not enabled until you select its checkbox. Note also that @mtit.com remains the primary SMTP address, whereas @mtitworld.com represents the secondary SMTP address, although this can be changed for all recipients by selecting @mtitworld.com and clicking the Set As Primary button.

0.1. In each of the following situations, indicate whether f = O(g), or f = (g), or both (in which case f = (g)). f (n) g(n) (a) n 100 n 200 (b) n1/2 n2/3 (c) 100n + log n n + (log n)2 (d) n log n 10n log 10n (e) log 2n log 3n (f) 10 log n log(n2 ) 1.01 (g) n n log2 n 2 (h) n / log n n(log n)2 0.1 (i) n (log n)10 log n (j) (log n) n/ log n (k) n (log n)3 (l) n1/2 5log2 n (m) n2n 3n (n) 2n 2n+1 (o) n! 2n 2 (p) (log n)log n 2(log2 n) n k (q) nk+1 i=1 i 0.2. Show that, if c is a positive real number, then g(n) = 1 + c + c2 + + cn is: (a) (1) if c < 1. (b) (n) if c = 1. (c) (cn ) if c > 1. The moral: in big- terms, the sum of a geometric series is simply the rst term if the series is strictly decreasing, the last term if the series is strictly increasing, or the number of terms if the series is unchanging. 0.3. The Fibonacci numbers F0 , F1 , F2 , . . . , are de ned by the rule F0 = 0, F1 = 1, Fn = Fn 1 + Fn 2 . In this problem we will con rm that this sequence grows exponentially fast and obtain some bounds on its growth. (b) Find a constant c < 1 such that Fn 2cn for all n 0. Show that your answer is correct. (c) What is the largest c you can nd for which Fn = (2cn ) 0.4. Is there a faster way to compute the nth Fibonacci number than by fib2 (page 11) One idea involves matrices. We start by writing the equations F1 = F1 and F2 = F0 + F1 in matrix notation: F1 F2 Similarly, F2 F3 = 0 1 1 F1 1 F2 = 0 1 1 1 = 0 1 F0 . 1 1 F1

Many types of computer infestations are actually not viruses at all. A true virus is a piece of code that attaches itself to an executable file and is not activated until the executable file is launched. A worm, on the other hand, is a program in itself and does not need to attach itself to a legitimate application in order to run. Viruses are typically more common than worms. Viruses can be categorized by where they hide themselves. The most common virus type is the file virus. File viruses hide themselves in executable files. When the executable file is run, the virus is activated. Another virus type is a macro virus. These viruses attach themselves to portions of applications and disguise themselves as macros. A macro is simply an automated process within an application, such as reading and automatically updating a date field or searching for and formatting specified text. Another type of virus is a boot sector virus. This type of virus hides itself in the MBR and is activated during startup when the MBR is located and initialized.

collected by Gillespie and colleagues. In most cases death occurs in 3 to 6 months from the onset of neurologic symptoms and even more rapidly in patients with AIDS unless aggressive antiretroviral treatment is undertaken. The CSF is usually normal. CT and MRI localize the lesions with striking clarity (Fig. 33-4). Pathogenesis Waksman s original suggestion (quoted by Richardson) that PML could be due to viral infection of the CNS in patients with impaired immunologic responses proved to be correct. ZuRhein and Chou, in an electron microscopic study of cerebral lesions from a patient with PML, demonstrated crystalline arrays of particles resembling papovaviruses in the inclusion-bearing oligodendrocytes. Since then, a human polyomavirus, designated JC virus or JCV (initials of the patient from whom the virus was originally isolated), has de nitively been shown to be the causative agent. JCV is ubiquitous, as judged by the presence of antibodies to the virus in approximately 70 percent of the normal adult population. It is thought to be dormant until an immunosuppressed state permits its active replication. The virus has been isolated from the urine, blood lymphocytes, and kidney, but there is no clinical evidence of damage to extraneural structures. Treatment The disease is generally believed to be untreatable in the non-AIDS patient. Several anecdotal reports of the ef cacy of cytosine arabinoside have appeared, but a controlled trial has failed to demonstrate an increased survival in AIDS patients with this disease. Interferon alpha has been thought to be bene cial in a few cases and the antiviral agent cidofovir is being tested in a large trial based on anectodal bene t. In treated AIDS patients, aggressive treatment using antiretroviral drug combinations, including protease inhibitors, greatly slows the progression of PML and has even led to apparent remission. A review of these issues, particularly relating to AIDS and PML, is included in the report by Mangi and Miller.

chunks, some of which are doubtless asteroids that were captured by Saturn long after the planet and its main moon system were formed. Only five of Saturn s moons exceed 1,000 km (620 mi) in diameter. These are Titan, Rhea, Iapetus, Dione, and Tethys.