Recently added

Research Articles (Industrial and Systems Engineering): Recent submissions

  • Adendorff, Kris (Kristian) (Southern African Institute for Industrial Engineering, 2002)
    There is widespread evidence that industrial systems do not consistently perform in a stable fashion regardless of how diligently they have been designed and operated. Operation of a system is often in a dynamic sense ...
  • Adendorff, S.A. (Susan Aletta), 1961-; Kruger, P.S. (Paul Stephanus), 1944- (Southern African Institute for Industrial Engineering, 2000)
    A scientifically-based decision-making procedure for determining the amount of cash to be held at a cash point of a retail bank at any time without compromising customer service levels or incurring undue cost was developed. ...
  • Joubert, Johan W.; Axhausen, Kay W. (Springer, 2013-05)
    We introduce complex network analysis and use a commercial vehicle’s observed trip as a proxy for a business relation between two facilities in its activity chain. We extract facility locations by applying density-based ...
  • Janse van Rensburg, Antonie C. (Southern African Institute for Industrial Engineering, 2012-07)
    Most people intuitively understand complexity, but being able to analyse it scientifically is not a common practice. For business executives, ‘complexity’ must be one of the most important concepts to understand, as it ...
  • Botha, G.J. (Gesina Jozina); Kruger, P.S. (Paul Stephanus), 1944-; De Vries, Marne (Southern African Institute for Industrial Engineering, 2012-05)
    In 2010 Botha, Kruger & De Vries [5] introduced a framework for enhancing customer experience through improved business processes. They developed the Enhanced Customer Experience Framework (ECEF) by integrating various ...
  • Willemse, Elias J.; Joubert, Johan W. (© 2012 Palgrave Macmillan, a division of Macmillan Publishers Limited. ., 2012-02)
    The most essential and alluring characteristic of a security estate is the estate's ability to provide 24-h security to its residents, of which the continual patrolling of roads and paths is vital. The objective of this ...
  • Sankaraiah, G.; Sarma, B.D.; Umasankar, C.; Yadavalli, Venkata S. Sarma (Southern African Institute for Industrial Engineering, 2011)
    The reliability of a system is generally treated as a function of cost; but in many real-life situations reliability will depend on a variety of factors. It is therefore interesting to probe the hidden impact of constraints ...
  • Yadavalli, Venkata S. Sarma; Labeodan, Moremi Morire OreOluwapo; Udayabaskaran, Swaminathan (South African Statistical Association, 2011)
    The inability to get people to regularly test and know their HIV status has caused the widespread unavailability of correct and comprehensive data on HIV infection especially the time at which an individual was first ...
  • Charles, V.; Yadavalli, Venkata S. Sarma; Rao, M.C.L.; Reddy, P.R.S.; Judice, J.J. (Hindawi Publishing Corporation, 2011-02-23)
    In this paper, we propose a stochastic programming model, which considers a ratio of two nonlinear functions and probabilistic constraints. In the former, only expected model has been proposed without caring variability ...
  • Yadavalli, Venkata S. Sarma; Karthikeyan, T.; Udayabaskaran, Swaminathan (South African Statistical Association, 2010-12)
    A mathematical model of a biological population, taking into account the effect of environmental in uences both on the life-time distribution and on the reproductive capacity of the individuals of the population, ...
  • Van Wyk, Estelle; Bean, Willemiena Lodewika; Yadavalli, Venkata S. Sarma (Southern African Institute for Industrial Engineering, 2011-05)
    Natural disasters - and even those caused by people - are largely unpredictable. So disasters need to be researched and their impact fully understood, so that the aid supplies required to ensure survival during and after ...
  • Luhandjula, M.K.; Joubert, Johan W. (Southern African Institute for Industrial Engineering, 2010-12)
    This paper is on fuzzy stochastic optimisation, an area that is quickly coming to the forefront of mathematical programming under uncertainty. An even stronger motivating factor for the growing interest in this area can ...
  • Joubert, Johan W.; Fourie, P.J. (Pieter Jacobus); Axhausen, Kay W. (National Academy of Sciences, 2010-11)
    The number of independent and interdependent freight actors (firms), the complex supply chain structures among them, and the sensitivity of shipment data are but a few reasons why modeling freight traffic is lagging its ...
  • Yadavalli, Venkata S. Sarma; Labeodan, Moremi Morire OreOluwapo; Udayabaskaran, Swaminathan; Forche, N. (Operations Research Society of SA, 2010-08)
    The T4 cell count, which is considered one of the markers of disease progression in an HIV infected individual, is modelled in this paper. The World Health Organisation has recently advocated that countries encourage HIV ...
  • Botha, G.J. (Gesina Jozina); Janse van Rensburg, Antonie C. (Southern African Institute for Industrial Engineering, 2010-05)
    In these modern times it is more and more difficult to become and stay competitive in the business environment. Customers have increasingly more products to choose from and more channels through which they can satisfy their ...
  • Yadavalli, Venkata S. Sarma; Adetunji, Olufemi; Sivakumar, B.; Arivarignan, G. (Southern African Institute for Industrial Engineering, 2010-04)
    This article considers a two-commodity continuous review inventory system in which the arriving customers belong to any one of three types, such that type 1 customers demand a single item of the first commodity, type 2 ...
  • Bean, Willemiena Lodewika; Joubert, Johan W. (Southern African Institute for Industrial Engineering, 2010-05)
    Reusable packaging often accumulates downstream in supply chains, resulting in non-revenue-earning relocations. This paper presents a reliable optimisation model under supply and demand uncertainty. Instead of using ...
  • Yadavalli, Venkata S. Sarma; Labeodan, Moremi Morire OreOluwapo; Udayabaskaran, Swaminathan; Mwanga, Y.A. (Operations Research Society of SA, 2009)
    Drug resistance to single therapeutic treatment in HIV infected individuals has promoted research into combined treatments. In this paper we propose a stochastic model under combined therapeutic treatment by extending ...
  • Pretorius, Pieter J. (Southern African Institute for Industrial Engineering, 1997)
    Industry and academia still have a major problem in grasping the extent and relationships of all functions involved in integrated logistics. This is because business logistics and logistics engineering developed separately, ...
  • Grobler, Jacomine; Engelbrecht, Andries P.; Kok, Schalk; Yadavalli, Venkata S. Sarma (Springer, 2009-01)
    This paper investigates the application of particle swarm optimization (PSO) to the multi-objective flexible job shop scheduling problem with sequence-dependent set-up times, auxiliary resources and machine down time. To ...