Browsing by Author "Joubert, Johannes Willem"

Browsing by Author "Joubert, Johannes Willem"

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  • Activity-based travel demand generation using Bayesian networks 
    Joubert, Johannes Willem; De Waal, Alta (Elsevier, 2020-11)
    While activity-based travel demand generation has improved over the last few decades, the behavioural richness and intuitive interpretation remain challenging. This paper argues that it is essential to understand why people ...
  • An agent-based evaluation of transit network design 
    Nnene, Obiora A.; Joubert, Johannes Willem; Zuidgeest, Mark H.P. (Elsevier, 2019)
    This article presents the design and evaluation of transit networks using a route expansion heuristic and agent-based travel demand simulation. The route expansion mechanism is a type of constructive heuristic algorithm ...
  • Benchmark dataset for undirected and mixed capacitated arc routing problems under time restrictions with intermediate facilities 
    Willemse, Elias J.; Joubert, Johannes Willem (Elsevier, 2016-07)
    In this article we present benchmark datasets for the Mixed Capacitated Arc Routing Problem under Time restrictions with Intermediate Facilities (MCARPTIF). The problem is a generalisation of the Capacitated Arc Routing ...
  • Combining accelerometer data and contextual variables to evaluate the risk of driver behaviour 
    Joubert, Johannes Willem; De Beer, Dirk Johannes; De Koker, Nico (Elsevier, 2016-08)
    Telemetry devices are generating and transferring increasingly more data, with notable potential for decision makers. In this paper we consider the accelerometer and speed data produced by in-vehicle data recorders as a ...
  • Could dedicated infrastructure boost minibus taxi performance? 
    Venter, C.J. (Christoffel Jacobus); De Beer, L.R.; Du Preez, Simeon; Joubert, Johannes Willem (South African Institution Of Civil Engineering, 2022-05)
    Over the last 15 years South Africa has invested heavily in the upgrading of public transport. However, issues such as slow deployment, limited impacts, and financial underperformance of our budding Bus Rapid Transit ...
  • Development of a map-matching algorithm for dynamic-sampling-rate GPS signals to determine vehicle routes on a MATSim network 
    Vosloo, Jaco-Ben; Joubert, Johannes Willem (Operations Research Society of South Africa, 2019)
    The rapid development and proliferation of global positioning system (GPS)-enabled systems and devices have led to a signi cant increase in the availability of transport data, more speci cally GPS trajectories, that can ...
  • Efficient local search strategies for the mixed capacitated arc routing problems under time restrictions with intermediate facilities 
    Willemse, Elias J.; Joubert, Johannes Willem (Elsevier, 2019-05)
    In this paper, we extend our previous work on greedy constructive heuristics for the Mixed Capacitated Arc Routing Problem under Time Restrictions with Intermediate Facilities (MCARPTIF) by developing efficient local search ...
  • Estimating net ideal cycle time for body-in-white production lines 
    Grobler, W.C.; Kotze, D.J.; Joubert, Johannes Willem (Operations Research Society of South Africa, 2021)
    In the automotive industry, a Body-in-White (BIW) refers to the rst step, the basic structure, in the production of a vehicle. Once a BIW production line has been built, the (maximum) capacity is xed and throughput is ...
  • Having a crack at bottle scuffing using agent-based mobility 
    Dempers, Clemens A.; Joubert, Johannes Willem (Elsevier, 2019)
    Recent advances in large-scale mobility models have shown that much system-level insight can be gained when modelling at the disaggregate, individual level. Although the focus is often on the movement of vehicles and/or ...
  • Impact of vehicle automation and electric propulsion on production costs for mobility services worldwide 
    Becker, Henrik; Becker, Felix; Abe, Ryosuke; Bekhor, Shlomo; Belgiawan, Prawira F.; Compostella, Junia; Frazzoli, Emilio; Fulton, Lewis M.; Bicudo, Davi Guggisberg; Gurumurthy, Krishna Murthy; Hensher, David A.; Joubert, Johannes Willem; Kockelman, Kara M.; Kroger, Lars; Le Vine, Scott; Malik, Jai; Marczuk, Katarzyna; Nasution, Reza Ashari; Rich, Jeppe; Carrone, Andrea Papu; Shen, Danqi; Shiftan, Yoram; Tirachini, Alejandro; Wong, Yale Z.; Zhang, Mengmeng; Bosch, Patrick M.; Axhausen, Kay W. (Elsevier, 2020-08)
    Automated driving technology along with electric propulsion are widely expected to fundamentally change our transport systems. They may not only allow a more productive use of travel time, but will likely trigger completely ...
  • Large expert-curated database for benchmarking document similarity detection in biomedical literature search 
    Brown, Peter; Joubert, Johannes Willem; Zhou, Yaoqi; RELISH Consortium (Oxford University Press, 2019-10)
    Document recommendation systems for locating relevant literature have mostly relied on methods developed a decade ago. This is largely due to the lack of a large offline gold-standard benchmark of relevant documents that ...
  • A matching algorithm to study the evolution of logistics facilities extracted from GPS traces 
    Trent, Nadia M.; Joubert, Johannes Willem; Gidofalvi, Gyozo; Kordnejad, Behzad (Elsevier, 2020)
    The ubiquity of anonymous GPS data has opened the door to a promising data source in the field of city logistics modelling. From this data the locations of logistics facilities can be extracted and their evolution studied ...
  • Modelling and determining the technical efficiency of a surface coal mine supply chain 
    Budeba, M.D.; Joubert, Johannes Willem; Webber-Youngman, R.C.W. (Southern African Institute of Mining and Metallurgy, 2015-12)
    Determining the efficiency of a surface coal mine operation is an essential activity, which can help in deciding on the optimal use of input resources, including effective capital allocation, in generating a desired ...
  • Modelling receiver logistics behaviour 
    Bean, Willemiena Lodewika; Joubert, Johannes Willem (Elsevier, 2019)
    There is a need for collaborative urban freight planning and appropriate decision and planning support tools are lacking, resulting in inadequate understanding of how urban freight agents should collaborate and what benefits ...
  • Multilayered complex network datasets for three supply chain network archetypes on an urban road grid 
    Viljoen, N.M. (Nadia); Joubert, Johannes Willem (Elsevier, 2018-02)
    This article presents the multilayered complex network formulation for three different supply chain network archetypes on an urban road grid and describes how 500 instances were randomly generated for each archetype. Both ...
  • A nodal approach for estimating potential cycling demand 
    Hitge, Gerhard; Joubert, Johannes Willem (Elsevier, 2021-01)
    Establishing cycling as a prominent utility mode is recognised as central to creating sustainable transport systems in many cities around the world. Strategies of starter cycling cities are often biased to the supply of ...
  • Predicting the efficiency of a surface coal mine for competitiveness 
    Budeba, M.D.; Joubert, Johannes Willem; Webber-Youngman, R.C.W.; Shafiee, Shahriar (Taylor & Francis, 2017)
    Mining is a competitive business with many players. The survival of a mine in the business is determined by its efficiency and cost-effectiveness relative to the other producers. Both new and operating mines should select ...
  • A proposed approach for modelling competitiveness of new surface coal mines 
    Budeba, M.D.; Joubert, Johannes Willem; Webber-Youngman, R.C.W. (Southern African Institute of Mining and Metallurgy, 2015-11)
    Cost estimation for surface coal mines is a critical practice that affects both profitability and competitiveness. New mines require these costs to be estimated using available information before a project begins. ...
  • The road most travelled : the impact of urban road infrastructure on supply chain network vulnerability 
    Viljoen, N.M. (Nadia); Joubert, Johannes Willem (Springer, 2018-03)
    Making a supply chain more resilient and making it more efficient are often diametrically opposed objectives. Managers have to make informed trade-offs when designing their supply chain networks. There are many methods ...
  • 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 ...