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Yard block assignment, internal truck operations, and berth allocation in container terminals: introducing carbon-footprint minimisation objectives
(Palgrave Macmillan Ltd, 2021)
It is of increasing importance to carry out port terminal operations in an environmentally sustainable way. We approach the yard block assignment and internal transportation problem in a way that establishes an optimum ...
On a recursively defined sequence involving the prime counting function
(University of Waterloo, 2021)
We prove some properties of sequence A335294 from the On-Line Encyclopedia of Integer Sequences, defined by an = ?(n) - ?(?n-1 k=1ak), where ?(x) is the number of primes ? x. In particular we show that the sequence (an) ...