Journal: Orion

Found 110 papers in total
On the Δ(d)-chromatic number of a complete balanced multipartite graph
On the Δ(d)-chromatic number of a complete balanced multipartite graph
2007,
In this paper we solve (approximately) the problem of finding the minimum number of...
An algorithm for the ⟨r,s⟩-domination number of a tree
An algorithm for the ⟨r,s⟩-domination number of a tree
2007,
Suppose that at most r units of some commodity may be positioned at any vertex of a...
The essential multiobjectivity of linear programming
The essential multiobjectivity of linear programming
2007,
It is argued that any non-trivial real world problems involve multiple objectives. The...
Modelling M/G/1 queueing systems with server vacations using stochastic Petri nets
Modelling M/G/1 queueing systems with server vacations using stochastic Petri nets
2006,
The theory of non-Markovian stochastic Petri nets is employed in this paper to derive...
Variable selection in multiple linear regression: The influence of individual cases
Variable selection in multiple linear regression: The influence of individual cases
2007,
The influence of individual cases in a data set is studied when variable selection is...
Operations research and development
Operations research and development
2007,
The paper begins with a discussion of the concepts ‘operations research’...
Operations research at CSIR: A brief history through cases
Operations research at CSIR: A brief history through cases
2007,
Apart from work in the mining industry during the 1950s, the first real Operations...
Is operations research really research?
Is operations research really research?
2006,
This paper takes a philosophical look at the Research in Operations Research. First,...
Threat evaluation and weapon assignment decision support: A review of the state of the art
Threat evaluation and weapon assignment decision support: A review of the state of the art
2007,
In a military environment an operator is typically required to evaluate the tactical...
Selection and scheduling of jobs with time-dependent duration
Selection and scheduling of jobs with time-dependent duration
2007,
In this paper two mathematical programming models, both with multiple objective...
A realised volatility measurement using quadratic variation and dealing with microstructure effects
A realised volatility measurement using quadratic variation and dealing with microstructure effects
2006,
A volatility measurement that overcomes the respective problems encountered when...
A procurement decision model for a video rental store – A case study
A procurement decision model for a video rental store – A case study
2007,
A procurement decision model for a video rental store is presented in this paper. The...
Stochastic inventory management at a service facility with a set of reorder levels
Stochastic inventory management at a service facility with a set of reorder levels
2007,
We consider a continuous review perishable inventory system at a service facility with...
Combining morphological analysis and Bayesian networks for strategic decision support
Combining morphological analysis and Bayesian networks for strategic decision support
2007,
Morphological analysis (MA) and Bayesian networks (BN) are two closely related...
A fixed recourse integer programming approach towards a scheduling problem with random data: A case study
A fixed recourse integer programming approach towards a scheduling problem with random data: A case study
2005,
Regardless of the success that linear programming and integer linear programming has...
Confidence limits for expected waiting time of two queueing models
Confidence limits for expected waiting time of two queueing models
2004,
A maximum likelihood estimator (MLE), a consistent asymptotically normal (CAN)...
Omitting correlated variables
Omitting correlated variables
2002,
Data collected on the physical, biological or man-made world are often highly...
An experiment on selecting most informative variables in socio-economic data
An experiment on selecting most informative variables in socio-economic data
2003,
In many studies where data are collected on several variables, there is a motivation...
Extending a scatterplot for displaying group structure in multivariate data: A case study
Extending a scatterplot for displaying group structure in multivariate data: A case study
2005,
The power of canonical variate analysis (CVA) biplots, when regarded as extensions of...
A filter bank for rotationally invariant image recognition
A filter bank for rotationally invariant image recognition
2005,
We present new rotation moment invariants based on multiresolution filter bank...
Methods of OR: A new graduate course
Methods of OR: A new graduate course
2003,
A new course entitled “Methods of Operations Research” (OR) was introduced...
Tips, tricks, and techniques in practicing OR – A different twist!
Tips, tricks, and techniques in practicing OR – A different twist!
2001,
This paper is a personal account of marketing and selling Operations Research (OR) in...
Operations Research: An indispensable toolkit for the logistician
Operations Research: An indispensable toolkit for the logistician
2005,
This paper traces the origin of the word logistics, outlines its conceptual evolution,...
Logistical planning with the help of simulation modeling: A case study
Logistical planning with the help of simulation modeling: A case study
2002,
This article gives an overview of the combined use of object-oriented programming and...
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