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American Journal of Operations Research (AJOR) is an international scientific journal dedicated to the publication and public discussion of high quality, original papers that contribute to the methodology of operational research and to the practice of decision making. AJOR contains the following types of papers: (1)In…
Antônio Orestes De Salvo Castro, Mayara De Jesus Rocha Santos, Fabiana Rodrigues Leta, Cláudio Benevenuto C. Lima, Gilson Brito Alves Lima
In the petroleum industry, sensor data and information are valuable. It can detect, predict and help to understand processes during oil production. Offshore wells require more attention. Once workovers, maintenance, and intervention are more costly than onsho…
Karibo Benaiah Bagshaw
This paper reviewed the concepts of Project Evaluation Review Technique and Critical Path Method in project management with practical examples. The methods and success of quantitative decision-making approaches in project management through t he use of projec…
O. Nwoba Pius, I. E. Chukwu Walford, S. Maliki Olaniyi
In this research work we propose a mathematical model of an inventory system with time dependent three-parameter Weibull deterioration and price- dependent demand rate. The model incorporates shortages and deteriorating items are considered in which inventory…
Vincenth Udok Udeme, Ukamaka Cynthia Orumie
The purpose of this work is to apply Game theory approach to determine patients’ preferences of healthcare facilities for quality healthcare in Akwa Ibom State. Cross-sectional descriptive study and purposive sampling technique were adopted in order to collec…
Margia Yesmin, Md. Abdul Alim
Multi - objective optimization problem (MOOP) is an important class of optimization problem that ensures users to model a large variety of real world applications. In this paper an advanced transformation technique has been proposed to solve MOOP. An algorith…
Bruno G. Rüttimann, Martin T. Stöckli
Respecting the on-time delivery (OTD) for manufacturing orders is mandatory. However, for non-JIT Batch & Queue Push-manufacturing systems, the compliance of OTD is not intrinsically guaranteed. As an OTD related manufacturing theory is largely missing it is…
Ananda Prasad Panta, Ram Prasad Ghimire, Dinesh Panthi, Shankar Raj Pant
This paper deals with the study of multi-server queueing model in a fuzzy environment with imposition of reneging of customers. Entry of the customers in the system is assumed to be Poisson process and exponential service time distribution under first - come-…
Santosh Kumar, Elias Munapo
This paper points out that delayed or no supply of software can kill potential benefits associated with new mathematical ideas that have led to development of new mathematics in OR. It also points out that it is a self-created situation by the scientific comm…
Isiyaku Aliyu, Babangida Sani
The original online version of this article ( Isiyaku Aliyu, Babangida Sani (2018) [18] An Inventory Model for Deteriorating Items with Generalised Exponential Decreasing Demand, Constant Holding Cost and Time-Varying Deterioration Rate. AJOR, 8, 1-16. doi: 1…
N. P. Akpan, N. A. Bassey
Data on time between complete power outages, Time between Failure (TBF) in Uyo were considered. Trend test and serial correlation test were conducted graphically for the data. The tests proved that the data were identically and independently distributed (iid)…
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American Journal of Operations Research (AJOR) is an international scientific journal dedicated to the publication and public discussion of high quality, original papers that contribute to the methodology of operational research and to the practice of decision making. AJOR contains the following types of papers: (1)In… All articles are open access under a CC BY 4.0 licence, with authors retaining copyright.
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