In the N-level batching problem, given items with different types can be grouped into several
batches at each level and this batching process is performed from level 1 to level N (from the shallower to the deeper level) sequentially in the given hierarchical clustering structure until all of given items are grouped.
Sets: J Jobs which j [member of] J M Machines which m [member of] M B
Batches which b [member of] B K Positions in sequence which k [member of] K Parameters: [P.sub.jm] Processing time of job j on machine m [S.sub.j] Size of job j Cap Capacity of machine L Positive large integer Decision variables: [X.sub.jb] A binary variable indicates the assignment of job j to the batch b [Z.sub.bk] A binary variable indicates whether the batch b is assigned to position k Dependent variables: [P.sub.bm] processing time of batch b on machine m [C.sub.km] completion time of the kth batch on machine m [Q.sub.km] processing time of the kth batch in sequence on machine m [C.sub.km] completion time of the last batch on last machine (makespan) Min [C.sub.KM]
Evira said the grounds for the bans on the fertiliser products were a heavy metal content that exceeded the permitted level in five
batches of ashes and one batch of inorganic multi-nutrition fertiliser products and that the content of Escherichia coli exceeded the permitted level in three
batches of organic soil improvers and one batch of soil mix.
* Identification of individually mixed
batches with lot number;
Instead of shipping large
batches to an impregnation facility, GMPT decided that the impregnation vessel should be directly connected to the casting machining facility.
Aventis Pasteur MSD said it was recalling several
batches of its rabies vaccine after a live strain of the virus was discovered during the testing of one batch, which never left the factory in France.
When the researchers tested several
batches of a brand, some differed in concentration by up to tenfold.
If it is from one of the affected
batches, they are advised to return it to the pharmacist or doctor who dispensed it.
Special features are numerous: important safety warnings and method statements can be prompted by the workstation; automatic calculation of ingredient weights for any batch size based on the 'master mix', as well as weighing for m ultiple
batches. All actions at the workstations are recorded in real-time, and management reports, under password control, provide full details of every batch prepared.
The team prepared additional
batches at different volumes (but maintaining the coffee-to-water ratio) and using different concentrations of coffee to produce stronger brews.
The ships unloaded a total of 40
batches of MOX fuel produced in Britain and France -- 32
batches at the No.
Meanwhile, condom company Durex is recalling several
batches of two of its products, as they did not pass its "shelf-life durability tests".