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Container size – A 20 feet container can not be loaded up on a 40 feet container, but the reverse is possible if the vessel structure allows it. Planners can also load a 40 feet container on top of two units of 20 feet container, this known as a "Russian stowage" or "mixed stowage".
The MACS3 Loading Computer System is a computer controlled loading system for commercial vessels, developed by Navis Carrier & Vessel Solutions. [1] Prior to October, 2017 it was offered by Interschalt maritime systems GmbH, and before 2007 - by Seacos Computersysteme & Software GmbH.
CargoMax is a stability and load management software application for marine and offshore industries. It is developed and sold by Herbert-ABS Software Solutions, LLC. First released in 1979, [1] CargoMax was one of the first computerized systems for planning and evaluating ship loading; it is currently one of the most-used software applications for this purpose. [2]
Modified first-fit-decreasing (MFFD) [27], improves on FFD for items larger than half a bin by classifying items by size into four size classes large, medium, small, and tiny, corresponding to items with size > 1/2 bin, > 1/3 bin, > 1/6 bin, and smaller items respectively.
First-fit-decreasing (FFD) is an algorithm for bin packing. Its input is a list of items of different sizes. Its input is a list of items of different sizes. Its output is a packing - a partition of the items into bins of fixed capacity, such that the sum of sizes of items in each bin is at most the capacity.
Large container terminals typically require yard management functionality in a TOS, whereas bulk dry and liquid cargo terminals do not. Terminal Operating Systems often use other technologies such as internet, EDI processing , mobile computers, wireless LANs and Radio-frequency identification (RFID) to efficiently monitor the flow of products ...
Here is a proof that the asymptotic ratio is at most 2. If there is an FF bin with sum less than 1/2, then the size of all remaining items is more than 1/2, so the sum of all following bins is more than 1/2. Therefore, all FF bins except at most one have sum at least 1/2. All optimal bins have sum at most 1, so the sum of all sizes is at most OPT.
Each packing problem has a dual covering problem, which asks how many of the same objects are required to completely cover every region of the container, where objects are allowed to overlap. In a bin packing problem, people are given: A container, usually a two- or three-dimensional convex region, possibly of infinite size. Multiple containers ...