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3 years ago

When did outdoor air pollution first become a significant problem?

1 answer:

6 0

Out door air pollution has been a problem since ancient Romans...but the industrial revouloution was when outdoor air pollution increased and it a significant problem...
hope this helps

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Software (often on firmware) designed to make physical products and devices "smarter" by doing things like sharing usage informa

kolezko [41]

Answer:

embedded system

Explanation:

Based on the scenario being described within the question it can be said that the type of software that is being described is known as an embedded system. This is actually a combination of both hardware and software that focuses on a specific function which is later implemented into a much larger system to allow it to become "smarter", by performing more complex tasks, which would otherwise not be possible.

5 0

4 years ago

The L-exclusion problem is a variant of the starvation-free mutual exclusion problem. We make two changes: as many as L threads

vladimir2022 [97]

Answer:

The solution is as follows.

class LFilters implements Lock {

int[] lvl;

int[] vic;

public LFilters(int n, int l) {

lvl = new int[max(n-l+1,0)];

vic = new int[max(n-l+1,0)];

for (int i = 0; i < n-l+1; i++) {

lvl[i] = 0;

}

public void lock() {

int me = ThreadID.get();

for (int i = 1; i < n-l+1; i++) { // attempt level i

lvl[me] = i;

vic[i] = me;

// rotate while conflicts exist

int above = l+1;

while (above > l && vic[i] == me) {

above = 0;

for (int k = 0; k < n; k++) {

if (lvl[k] >= i) above++;

}

public void unlock() {

int me = ThreadID.get();

lvl[me] = 0;

}

Explanation:

The code is presented above in which the a class is formed which has two variables, lvl and vic. It performs the operation of lock as indicated above.

6 0

3 years ago

Will this solution really fix the problem?

vova2212 [387]

Answer:

yes it will

Explanation:

6 0

3 years ago

An interrupt priority scheme can be used to ____. allow the most urgent work to be finished first make it possible for high-prio

Nana76 [90]

Answer:

All of the above

Explanation:

An interrupt priority scheme is a system which decides the priority at which various work is done and it perform all of the above mention task so therefore all of the above is the right answer.

5 0

4 years ago

Using Sequential Search on an array of size n, the search key is definitely present in the array. The probability of matching th

MissTica

Answer:

(11n-5) / 12 is correct answer.

Explanation:

The Probability that key will match to nth term = 1/2

The Probability that key will match to n-1th term = 1/3

As all other probabilities are equal

The Total Probability that key matches to any of 1 to n-2 index = 1 - 1/2 - 1/3 = 1/6

The Probability that key matches to any of 1 to n-2 index = (1/6) / n-2 = (1/6)* (n-2))

Let P(i) = Probability that key matches to ith index.

The Average time complexity = 22 i=1 P(i) * i

The Average time complexity = 1/(6(n-2) * ( sum of 1 to n-2 ) + (n-1) / 3 + n/2

The Average time complexity = 1/(6(n-2) * ( n-2)*(n-1) / 2 + ( n-1) / 3 + n/2

The Average time complexity = 1/6 * (n-1)/2 + (n-1)/3 + n/2

The Average time complexity = (n-1)/12 + (n-1)/3 + n/2

The Average time complexity = (n-1 + 4 * n - 4 * 1 +6 * n)/12

The Average time complexity = 11n-5 / 12

so (11n-5) / 12 is correct answer.

7 0

3 years ago