Suppose you and your friend live on the same street D miles away from each other. Between your house and your friend’s house there are n motorized scooters positioned at distances x1, x2, . . . , xn miles from your house towards your friend’s house. Each scooter has a battery that may or may not be fully charged. Let’s say that the scooters can take you distances d1, d2, . . . , dn miles down the road. Each scooter also has a price p1, p2, . . . , pn that it takes to activate. Any time you encounter another scooter, you may take the new scooter and leave your old scooter behind. There is an additional scooter at your house that you start with and it can go distance d0 miles and it is free to activate: p0 = 0. You wish to go to your friend’s house minimizing the total amount of money spent activating the scooters. Design a Dynamic Programming algorithm that returns the minimum cost to get to your friend’s house using scooters x0, . . . , xn.

When making changes to optimize part of a processor, it is often the case that speeding up one type of instruction comes at the cost of slowing down something else. for example, if we put in a complicated fast floating-point unit, that takes space, and something might have to be moved farther away from the middle to accommodate it, adding an extra cycle in delay to reach that unit. the basic amdahl's law equation does not take into account this trade-off. a. if the new fast floating-point unit speeds up floating-point operations by, on average, 2ă—, and floating-point operations take 20% of the original program's execution time, what is the overall speedup (ignoring the penalty to any other instructions)? b. now assume that speeding up the floating-point unit slowed down data cache accesses, resulting in a 1.5ă— slowdown (or 2/3 speedup). data cache accesses consume 10% of the execution time. what is the overall speedup now? c. after implementing the new floating-point operations, what percentage of execution time is spent on floating-point operations? what percentage is spent on data cache accesses?

What is the error in the following pseudocode? module main() call raisetopower(2, 1.5) end module module raisetopower(real value, integer power) declare real result set result = value^power display result end module

This assignment continues work on the online booking facility introduced at the end of chapter- 10. the work will be continued in the assignments for chapters 14 and 15 (a) assume that you will produce your online booking facility using an agile approach. i. suggest the kind of user research you would like to conduct for your product before iteration cycles begin. ii prioritize the requirements for your product according to business value, i.e which requirements are likely to provide the greatest business benefit, and sketch out the ux design work you would expect to undertake during the first four iteration cycles, i.e. cycle 0, and cycles 1 to 3. (b) using one of the mockup tools introduced above, generate a mockup of your product's landing page, as developed in the assignment for chapter-11 (c) using one of the patterns websites listed previously, identify suitable interaction patterns for elements of your product, and develop a software-based prototype that incorporates all the feedback and the results of the user experience mapping achieved at the end of chapter-11. if you do not have experience in using any of these, create a few html web pages to represent the basic structure of your website