Home automation is an example application of an Internet of Things (IoT) network, in which various mains and battery-operated sensors and devices are controlled from either inside a house or from a remote location. While Wi-Fi is common in domestic settings, it has limitations in effectively supporting IoT devices in the home, which has led to alternative short-range, low-power, low-data networks, like ZigBee, being proposed for home automation purposes. Based on what you have learnt in Block 3, write a summary, on the requirements for a home automation IoT network (see Section 4.5, P214), discussing whether Wi-Fi is the best network option, by considering radio coverage, power consumption, cost and convenience. You should also outline how, in using ZigBee as a home automation network, some of the Wi-Fi issues you have identified, are addressed.

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?

Apunishment or the threat of punishment used to enforce conformity. select the best answer from the choices provided t f

In a heat transfer course, we can derive the equation for the temperature distribution in a flat rectangular plate. in this example, we will look at a plate at steadystate with three sides being held at t1, and one side held at t2. the temperature for any location on the plate, t(x, y), can be calculated by where create a function (prob3_5) that will take inputs of vectors x and y in feet, scalar n, scalars l and w in feet and scalars t1 and t2 in degrees fahrenheit. it will output a matrix t which is the temperature of each x and y locations. t will have the number of columns equal to the number of elements in x and rows equal to the number of elements in y. though this can be done without loops (perhaps more efficiently), your program must use a nested loop.