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Akademický článek
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Autor:
Akyuz Turumtay, Emine, Demir, Adem, Cetiz, Mehmet Veysi, Uludag, Emre Berk, Baltaş, Nimet, Yaman, Burak, Yaman, Mehmet, Emirik, Mustafa, Turumtay, Halbay
Publikováno v:
Chemical Papers; Oct2023, Vol. 77 Issue 10, p6235-6253, 19p
Autor:
Emre Berk, Ayhan Özgür Toy
Publikováno v:
IISE Transactions
We study a serial inventory system where the external customers may have a maximum time that they would be willing to wait for delivery in cases of stock-out and the demand would be lost if the remaining delivery lead time of the next available item
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::8eea5af61a8b8034bc3cc91208910ef0
https://hdl.handle.net/11693/111702
https://hdl.handle.net/11693/111702
Publikováno v:
Operations Research Letters
In this paper, we consider a particular form of inequalities which involves product of multiple variables with rational exponents. These inequalities can equivalently be represented by a number of conic quadratic forms called cone constraints. We pro
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d2e68e8e363848993b76cc2dbe47c4f9
https://doi.org/10.1016/j.orl.2019.09.004
https://doi.org/10.1016/j.orl.2019.09.004
Publikováno v:
IISE Transactions, 53(2), 221-245. Informa UK Limited
IISE Transactions
IISE Transactions
We investigate the impact of effective lifetime of items in an age-based control policy for perishable inventories, a so-called (Q, r, T) policy, with positive lead time and fixed lifetime. The exact analysis of this control policy in the presence of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::abc4ae72e019b2be2e27930f0c2ad042
https://research.tue.nl/nl/publications/b2e44f94-f702-4307-bab5-06e302559fcf
https://research.tue.nl/nl/publications/b2e44f94-f702-4307-bab5-06e302559fcf
Autor:
Akyuz Turumtay, Emine, Demir, Adem, Cetiz, Mehmet Veysi, Uludag, Emre Berk, Baltaş, Nimet, Yaman, Burak, Yaman, Mehmet, Emirik, Mustafa, Turumtay, Halbay
Publikováno v:
Chemical Papers; 20230101, Issue: Preprints p1-19, 19p
Publikováno v:
International Journal of Production Research
In this article, we consider the production planning problem in the presence of (dis)economies-of-scale in production costs on a rolling horizon basis with a fixed forecast horizon. We propose variants of three well-known and commonly used heuristics
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::050a8f6c2d396c0933bd8c23ffbf7361
https://hdl.handle.net/11693/77357
https://hdl.handle.net/11693/77357
Publikováno v:
Annals of Operations Research. 284:81-98
We consider an inventory system for perishables with fixed lifetimes, positive replenishment lead times and lost sales in the presence of non-negligible fixed ordering costs. The system is studied under the lotsize reorder level (Q, r) policy. An exa
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7815d66905ea3885d225d6b40a96a15c
https://doi.org/10.1007/s10479-018-3044-3
https://doi.org/10.1007/s10479-018-3044-3
Autor:
Ünsal, Emre Berk
Çalışan çizelgeleme problemleri birden çok çalışanın bir arada çalıştığı birçok organizasyonda ortaya çıkmaktadır. Bu çalışma çalışanların çeşitli etkinliklerde konukları karşılayıp, konuklarla iletişim kurduğu karş
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=od_____10208::8b38024391f65dbc4b7e1d1e0126d9f0
https://acikbilim.yok.gov.tr/handle/20.500.12812/678920
https://acikbilim.yok.gov.tr/handle/20.500.12812/678920