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Wyszukujesz frazę "integer model" wg kryterium: Temat


Wyświetlanie 1-2 z 2
Tytuł:
A developed nonlinear model for the location-allocation and transportation problems in a cross-docking distribution network
Autorzy:
Nasrollahi, Saeid
Hosseini-Nasab, Hasan
Fakhrzad, Mohamad Bagher
Honarvar, Mahboobeh
Powiązania:
https://bibliotekanauki.pl/articles/2175835.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
cross-docking
location-allocation
transportation problem
mixed-integer non-linear model
consolidation
Opis:
The paper addresses the location-allocation and transportation problems in designing a cross-docking distribution network that consists of suppliers, cross-docks, and plants. A developed mixed-integer non- -linear model is proposed for a post-distribution cross-docking strategy with multiple cross-docks and products that cross-docks can be connected. The objective function is to minimise the total cost comprising the cost of established cross-docks and transportation costs. To obtain this model, first, two models are introduced and compared (basic non-linear model 1 and non-linear model 2 with the possibility of connections between cross-docks). Results indicate that the total cost is decreased when the connection between cross-docks exists. So, model 2 is more efficient and suitable than model 1. Then, consolidation of plant orders is added to model 2, and the developed model is formulated. Finally, some problems with different sizes are generated randomly and solved by GAMS software to evaluate the model accuracy.
Źródło:
Operations Research and Decisions; 2022, 32, 1; 127--148
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
A slacks-based nonlinear DEA model with integer data : an application to departments of the Islamic Azad University, Karaj Branch in Iran
Autorzy:
Moazenzadeh, Zahra
Saati, Saber
Saen, Reza Farzipoor
Matin, Reza Kazemi
Sohraee, Sevan
Powiązania:
https://bibliotekanauki.pl/articles/2175850.pdf
Data publikacji:
2022
Wydawca:
Politechnika Wrocławska. Oficyna Wydawnicza Politechniki Wrocławskiej
Tematy:
data envelopment analysis
non-radial model
integer-valued data
slack based measure
Opis:
Although Data Envelopment Analysis (DEA) assumes that inputs and outputs take non-negative real values, in some realworld cases, data are integer-valued. In some situations, rounding a fractional value to the closest integer can lead to a misleading evaluation of efficiency and in some cases may lead to an infeasible projection point. To date, various radial and non-radial models have been presented. This paper proposes a slacks-based non-linear model that guarantees an integer-valued reference point for all integer targets. Also, the reference point of each target is feasible under the proposed model. The lack of a need to round answers to the closest whole value is an advantage of this method. In addition, the results of this model are compared with other models. An example is used to clarify the suggested method.
Źródło:
Operations Research and Decisions; 2022, 32, 3; 80--91
2081-8858
2391-6060
Pojawia się w:
Operations Research and Decisions
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-2 z 2

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