a couple of these assumptions are pretty restrictive. so to start our derivation let's look at uh our assumptions first.
this week and next you're gonna see some extensions where we look at alternative I-O point locations in the rack. so the S-R machine will always idle at the I-O point, and, for today's lecture, we're gonna assume, the I-O point is at the lower left-hand corner of the rack. and then we discussed briefly, the dwell point strategy for the S-R machine, how exactly does the S-R machine operate, and what do you do when there's nothing in the system, and the simplest strategy, in terms of dwell point and that's the one we're gonna follow today the uh S-R, machine returns. also we defined an operation either as a storage or a retrieval, and, also i said we will measure the throughput of the system, in terms of operations completed per hour. we defined what we mean we_ what we mean by a single-command cycle dual-command cycle so i hope you remember those. and as i said it's a fairly old paper nineteen, eighty-four, mkay so if you want a copy of the paper you can, go read it uh, it's not it's not required that you get this paper though. yeah i just_ yeah volume sixteen number four. well i may not have the volume number here.
I-I-E transactions, i won't write the title but it's called Travel Time Models for Automated Storage Retrieval Systems. some of the material not all of it, comes from a paper, that uh White and John White and i published in nineteen eighty-four so it's been a while, uh this is not all of the material mind you okay so there's some extensions that you're gonna see in class, which are not shown in the paper, but some of the basic derivations are here, this is the.
anybody need copies of handouts.? any questions from last time? any comments? well if not i'd like to start now with the, derivation of the cycle time for, unit load automated storage retrieval systems. does everybody have uh copies of the handouts from last time? i think i was one short of the warehouse layout but we've covered you too? okay. okay let's start uh, i think it's just right on time. S1: no, no on the serious side they uh, it says the primary reason for collecting an- un- and un- and analyzing this data is to improve the teaching and learning, of English for non-native speakers who will be studying or teaching at a at a university in the U-S, by analyzing linguistic features of a large number of speakers so, i was uh asked to participate and i said sure i'd be glad to do so, and uh, i think, since you are also part of the tape, you need to sign this consent form, which as the fine print at the bottom says i agree to any grade the professor will assign to me in this course regardless of my performance on the exam there's the tiny fine print there.
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