Browsing Research Articles (Industrial and Systems Engineering) by Title

Browsing Research Articles (Industrial and Systems Engineering) by Title

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  • Solving the buffer allocation problem using simulation-based optimisation 
    Joubert, Johannes Willem; Kotze, D.J. (Operations Research Society of South Africa, 2020)
    In production lines, buffers function as a means to decouple stations, which reduce the effect that station failures and varying process times have on the complete line's throughput. However, adding larger buffers can be ...
  • A South African scenario for emissions modelling 
    Joubert, Johan W.; Grabe, Ruan Johannes (Elsevier, 2021)
    Scenarios with high levels of diversity lend themselves to be represented or imitated by disaggregate, agent-based models as the individual agents can capture the unique attributes of the constituents of the overall system. ...
  • Splitting procedures for the mixed capacitated arc routing problem under time restrictions with intermediate facilities 
    Willemse, Elias J.; Joubert, Johannes Willem (Elsevier, 2016-09)
    This paper develops optimal and quick near-optimal splitting procedures for the Mixed Capacitated Arc Routing Problem under Time restrictions with Intermediate Facilities. Splitting procedures are a key component of giant ...
  • Stochastic differential equation-based flexible software reliability growth model 
    Kapur, P.K.; Anand, Sameer; Yamada, Shigeru; Yadavalli, Venkata S. Sarma (Hindawi, 2009)
    Several software reliability growth models (SRGMs) have been developed by software developers in tracking and measuring the growth of reliability. As the size of software system is large and the number of faults detected ...
  • Stochastic fractional programming approach to a mean and variance model of a transportation problem 
    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 ...
  • Stochastic model for common cause failures and human error 
    Yadavalli, Venkata S. Sarma; Bekker, Andriette, 1958- (Southern African Institute for Industrial Engineering, 2005-05)
    A consistent asymptotic normal (CAN) estimator and confidence limits for the steady-state availability of series and parallel systems subject to unit failures, common-cause shock (CCS)failures and human error are studied. ...
  • A stochastic model of the dynamics of HIV under a combination therapeutic intervention 
    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 ...
  • A stochastic point process model of the incubation period of a HIV infected individual 
    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 ...
  • Stochastic simulation for budget prediction for large surface mines in the South African mining industry 
    Hager, J.; Yadavalli, Venkata S. Sarma; Webber-Youngman, R.C.W. (Southern African Institute of Mining and Metallurgy, 2015-06)
    This article investigates the complex problem of a budgeting process for a large mining operation. Strict adherence to budget infers that financial results align with goals. In reality, the budget is not a predetermined ...
  • A supply chain management model to optimise the sorting capability of a ‘third party logistics’ distribution centre 
    Yadavalli, Venkata S. Sarma; Balcou, C. (Association for Professional Managers in South Africa, 2017-03)
    In this paper, the process flow within a high-end 3PL distribution centre is studied in order to determine the optimal split between the parcel size categories moved within the system. The article considers the application ...
  • Supply chain micro-communities in urban areas 
    Viljoen, N.M. (Nadia); Joubert, Johannes Willem (Elsevier, 2019-01)
    An increase in urban freight transport is inevitable as growing urban populations require more goods, more conveniently. A deeper understanding of the geography and trends of urban freight transport must recognise that it ...
  • Supply planning in the South African automotive industry 
    Stark, V.; Van Schoor, Christiaan de Wet; Strasheim, J.J. (Southern African Institute for Industrial Engineering, 2005-11)
    Supply planning in the automotive industry is a vital ingredient for supply chain integration. The role and function of a supply planner, although clearly defined in European developed methods, lacks the practical ...
  • Surface roughness prediction using a hybrid scheme of difference analysis and adaptive feedback weights 
    Ayomoh, Michael Kweneojo; Abou-El-Hossein, K.A. (Elsevier, 2021-03)
    This research has presented an optimum model for surface roughness prediction in a shop floor machining operation. The proposed solution is premised on difference analysis enhanced with a feedback control model capable ...
  • System dynamics comparison of three inventory management models in an automotive parts supply chain 
    Botha, Andries; Grobler, Jacomine; Yadavalli, Venkata S. Sarma (AOSIS Open Journals, 2017-03-30)
    BACKGROUND : The automotive parts supply chain measures its success in terms of parts availability and stock required to achieve the availability target, measured as allocation fill rate (AFR). The supply chain strives ...
  • A systematic evaluation of freight carrier response to receiver reordering behaviour 
    Bean, Willemiena Lodewika; Joubert, Johannes Willem (Elsevier, 2018-10)
    The fields of behavioural transport modelling has been gaining momentum and many researchers have focused on incorporating some elements of stakeholder behaviour and decision making into their freight planning tools. ...
  • Systems with extended availability and switchover delays 
    Yadavalli, Venkata S. Sarma; Hameed, M.A. Shahul; Prathaban, L.; Thaga, K. (Southern African Institute for Industrial Engineering, 2007-11)
    A system with extended availability and switchover delays with a single repair facility is considered, with a random extended available period having a switching delay from online failure to the repair of the facility. ...
  • Testing self-perception theory with agent-based simulation 
    Joubert, Johan W.; Hitge, Gerhard; International Workshop on Agent-based Mobility, Traffic and Transportation Models, Methodologies and Applications (12th : 2023 : Leuven, Belgium) (Elsevier, 2023)
    Conventional wisdom is that a person's attitude towards an issue dictates their behaviour. In contrast, self-perception theory accounts for how a person forms their attitude. In the context of this paper, the theory asserts ...
  • A three-echelon supply chain for economic growing quantity model with price- and freshness-dependent demand : pricing, ordering and shipment decisions 
    Sebatjane, Makoena; Adetunji, Olufemi (Elsevier, 2020)
    The demand for perishable food products is often influenced by the selling price and the age of the items. This is because perishable food products have become commodities from consumers’ point of view, hence, there ...
  • A total quality management approach to civil engineering consulting 
    Ambrose, G.A.L.; Claasen, S.J. (Schalk Johannes) (Southern African Institute for Industrial Engineering, 2004)
    The article describes the development of a framework for the implementation of a Total Quality Management (TQM) approach in the civil consulting industry through the five phases of the typical civil engineering project. ...
  • Towards a holistic customer experience management framework for enterprises 
    Du Plessis, Liezl; De Vries, Marne (Southern African Institute for Industrial Engineering, 2016-11-06)
    We have entered the age of the customer where customer choice is the main differentiator between enterprises. Therefore, enterprises need to shift their focus to customer experience management (CEM). A survey conducted ...