The Impact of Escalator Performance on Passenger Experience
このQ&Aのポイント
Learn about the impact of escalator performance on passenger experience in terms of response time and throughput.
Discover how the degree of parallelism affects the escalator's capacity to carry passengers.
Understand the relationship between the number of passengers boarding the escalator and its degree of parallelism.
卒論に使用するため、翻訳をお願いしたいです。コンピューター関係の書物の
卒論に使用するため、翻訳をお願いしたいです。コンピューター関係の書物の文章です。
Consider a building that has two floors, with an escalator to carry people from one floor to the other.
Ignoring queuing delays, the response time for a passenger is the mean time taken by the escalator to ascend or descend one floor.
The throughput (bandwidth) is the mean number of passengers that can be loaded or per second.
Suppose that an average of five people step on the escalator in one second, and that the escalator takes an average of 10 seconds to go up one floor.
The response time for a passenger, therefore, is 10 seconds, and the throughput of the escalator is 5 passengers/second.
Thus, the degree of parallelism, which is the mean number of passengers carried simultaneously, is 5*10=50.
To see this, mark a passenger with a daub of red paint as she steps on the escalator.
In the ten seconds that she takes to reach the top, we expect that fifty more passengers boarded the escalator.
Thus, when she steps off, the escalator carries an average of fifty passengers, which is its degree of parallelism.