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Wyszukujesz frazę "lead time demand" wg kryterium: Temat


Wyświetlanie 1-3 z 3
Tytuł:
The impact of stochastic lead times on the bullwhip effect – an empirical insight
Autorzy:
Nielsen, P.
Michna, Z.
Powiązania:
https://bibliotekanauki.pl/articles/407121.pdf
Data publikacji:
2018
Wydawca:
Polska Akademia Nauk. Czytelnia Czasopism PAN
Tematy:
supply chain
bullwhip effect
inventory policy
lead time demand
order-up-to-level policy
stochastic lead time
demand forecasting
lead time forecasting
lead time demand forecasting
Opis:
In this article, we review the research state of the bullwhip effect in supply chains with stochastic lead times. We analyze problems arising in a supply chain when lead times are not deterministic. Using real data from a supply chain, we confirm that lead times are stochastic and can be modeled by a sequence of independent identically distributed random variables. This underlines the need to further study supply chains with stochastic lead times and model the behavior of such chains.
Źródło:
Management and Production Engineering Review; 2018, 9, 1; 65-70
2080-8208
2082-1344
Pojawia się w:
Management and Production Engineering Review
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The bullwhip effect in supply chains with stochastic lead times
Autorzy:
Michna, Zbigniew
Nielsen, Izabela Ewa
Nielsen, Peter
Powiązania:
https://bibliotekanauki.pl/articles/584974.pdf
Data publikacji:
2013
Wydawca:
Wydawnictwo Uniwersytetu Ekonomicznego we Wrocławiu
Tematy:
supply chain
bullwhip effect
inventory policy
stochastic lead time
lead time demand forecasting
Opis:
In this article we consider a simple two stage supply chain. We quantify the variance amplification of orders – the bullwhip effect in a model with stochastic lead times. Employing the moving average forecasting method for lead time demands we obtain an exact value of the bullwhip effect measure. We analyze the formula using numerical examples.
Źródło:
Mathematical Economics; 2013, 9 (16); 71-88
1733-9707
Pojawia się w:
Mathematical Economics
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Inventory model for deteriorating items with negative exponential demand, probabilistic deterioration and fuzzy lead time under partial back logging
Autorzy:
Sen, Nabendu
Saha, Sumit
Powiązania:
https://bibliotekanauki.pl/articles/1181963.pdf
Data publikacji:
2020
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
fuzzy lead time
shortages
partially backlogged
exponentially declining demand
probabilistic deterioration
Opis:
The effect of lead time plays an important role in inventory management. It is also important to study the optimal strategies when the lead time is not precisely known to the decision-makers. This paper aimed to examine the inventory model for deteriorating items with fuzzy lead time, negative exponential demand, and partially backlogged shortages. This model is unique in its nature due to probabilistic deterioration along with fuzzy lead time. The fuzzy lead time was assumed to be triangular, parabolic, trapezoidal numbers. The graded mean integration representation method was used for the defuzzification purpose. Three different types of probability distributions, namely uniform, triangular and beta were used for rate of deterioration to find optimal time and associated total inventory cost. The developed model was validated numerically, and values of optimal time and total inventory cost are given in a tabular form, corresponding to different probability distributions and fuzzy lead-time. The sensitivity analysis was performed on the variation of key parameters to observe its effect on the developed model.
Źródło:
Operations Research and Decisions; 2020, 30, 3; 97--112
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-3 z 3

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