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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…
Nguyen Khac Minh, Nguyen Thanh Trung, Pham Van Khanh
Assume that we want to shell an asset with unknown drift but known that the drift is a two value random variable, and the initial distribution can be estimated. As time goes by, this distribution is updated and base on the probability of the drift takes the s…
Nguyen Khac Minh, Pham Van Khanh, Nguyen Thi Phuong
Misallocation means that the source is not distributed efficiently. This leads to an important question of how the relationship between misallocation and efficiency is (see [ 1 ]). The purpose of this study is to address the empirical relationship between mis…
Alireza Tehrani Nejad Moghaddam, Thibault Monier
In Linear Programming (LP) applications, unexpected non binding constraints are among the “why” questions that can cause a great deal of debate. That is, those constraints that are expected to have been active based on price signals, market drivers or manager…
Moustafa Kotb, Mohamed Ibrahim Abdel Razik, Yousef S. Alolayan
The construction industry in the State of Kuwait has recently witnessed a rapid growth as the volume of construction projects increased significantly over the past decade. Because of the progress and growth of the industry and the size of the projects, the vo…
Eman Ahmed Kamel
This study analyzed the M/M/2/1 queueing model with queue of length one (waiting room of capacity just one), heterogeneous servers and ordered entry using the method of semi-Markov process. The customers who arrive in the system enter the free server; if the…
Mark K. Ledbetter, Norou Diawara, Bryan E. Porter
Problem: Several approaches to analyze survey data have been proposed in the literature. One method that is not popular in survey research methodology is the use of item response theory (IRT). Since accurate methods to make prediction behaviors are based upon…
Isiyaku Aliyu, Babangida Sani
In this present paper, an inventory model with a generalised exponential decreasing demand is considered. A numerical example is used to illustrate the application of the model. Sensitivity analysis of the optimal solution with respect to various parameters i…
Moustafa Kotb, Mohamed Ibrahim Abdel Razik, Reda Abbass Sabry
To paraphrase the Greek philosopher Heraclitus, change is the only constant in construction projects. Changes in scope occur as projects progress from design through practical completion. FIDIC General Conditions Clause 13 [ 1 ] is one of the most important t…
Enobong Francis Udoumoh, Daniel W. Ebong
Project Evaluation and Review Technique (PERT) alongside recent modifications is a popular and useful tool in project risk analysis. Over the past seven decades, there have been some modifications in PERT owing to the shift from beta distributed activity time…
Siba Prasad Mishra
Major peninsular rivers debouching into the Bay of Bengal through 2729 km long east coast of India, carry enormous inland flow and sediment from their alluvial basins. Present climate changes, storm irregularities and tsunamis have changed the hydrology of th…
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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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