Journal: Orion

Found 110 papers in total
Quantifying the role of personal management style in the success of investment portfolios
Quantifying the role of personal management style in the success of investment portfolios
2001,
It is extremely difficult to quantify the effect of different management styles of...
A partitioning scheme for solving the 0–1 knapsack problem
A partitioning scheme for solving the 0–1 knapsack problem
2003,
The application of valid inequalities to provide relaxations which can produce tight...
Decision-making: Theory and practice
Decision-making: Theory and practice
2004,
This paper compares a number of theoretical models of decision-making with the way in...
Price reductions on stocks with decreasing demand
Price reductions on stocks with decreasing demand
2004,
This paper proposes a heuristic approach for the minimization of losses on stocks with...
A general approach to total repair cost limit replacement policies
A general approach to total repair cost limit replacement policies
1999,
A common replacement policy for technical systems consists in replacing a system by a...
Integrated and objective-oriented statistical process control
Integrated and objective-oriented statistical process control
2000,
Global competition and increased environmental concern have emphasized the...
Reliability and diagnostic of modular systems
Reliability and diagnostic of modular systems
2000,
Reliability and diagnostic are in general two problems discussed separately. Yet the...
Combinatorial methods in network reliability analysis
Combinatorial methods in network reliability analysis
2000,
In this paper, a stochastic network is an undirected graph with unreliable edges and...
Disjoint sum forms in reliability theory
Disjoint sum forms in reliability theory
2000,
The structure function ϕ of a binary monotone system is assumed to be known and...
Generalized models of repairable systems. A survey via stochastic processes formalism
Generalized models of repairable systems. A survey via stochastic processes formalism
2000,
In this article, we survey the developments in the generalised models of repairable...
A note on parametric availability
A note on parametric availability
2000,
Availability of a binary repairable system is generalised on the case when the quality...
Stochastic analysis of a two-unit system with vacation for the repair facility after m repairs
Stochastic analysis of a two-unit system with vacation for the repair facility after m repairs
2000,
Stochastic analysis of a two unit system with vacation period for the repair facility...
The future of industrial statistics
The future of industrial statistics
2000,
The field of industrial statistics traces its origins from the early part of the...
Community OR and OR for development: A South African perspective
Community OR and OR for development: A South African perspective
1999,
An overview is given of Community Operations Research and of the connection between OR...
Seeking optimality in fruit pulping schedules: A case study
Seeking optimality in fruit pulping schedules: A case study
1999,
The process of scheduling fruit pulping for the production of fruit juices is of great...
Optimizing investment performance through international diversification
Optimizing investment performance through international diversification
1999,
International portfolio diversification is often advocated as a way of enhancing...
Use of data envelopment analysis and regression for establishing manpower requirements in a bank
Use of data envelopment analysis and regression for establishing manpower requirements in a bank
1998,
We describe an approach towards forecasting the manpower requirements in each of the...
Some current problems of reliability theory
Some current problems of reliability theory
1997,
Reliability work occupies an increasingly important place in engineering practice....
Total repair cost limit replacement policies
Total repair cost limit replacement policies
1997,
Practical applications of stochastic maintenance models frequently fail due to...
Junk food or genuine nourishment: The nutritional value of some South African fast-food chains
Junk food or genuine nourishment: The nutritional value of some South African fast-food chains
1997,
Integer programming is used to test the nutritional completeness of two fast-food...
Crop rotation systems in the Swartland
Crop rotation systems in the Swartland
1998,
In the Swartland region farmers do not plant wheat exclusively. There are a lot of...
Measurements of risk in fisheries management
Measurements of risk in fisheries management
1998,
An important goal in many fisheries management problems is perceived to be...
Decision support systems for environmental management: A case study on estuary management
Decision support systems for environmental management: A case study on estuary management
1998,
In situations to do with the management of natural resources in the public domain...
The RDP – What can OR offer?
The RDP – What can OR offer?
1996,
South Africa has made historical changes during the past six years. With the change of...
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