Browsing Conference Papers by Author "10196978 - Hoffman, Alwyn Jakobus"
Now showing items 1-20 of 29
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Application of data analytics to transport corridor diagnostics and performance benchmarking
Hoffman, Alwyn J.; Venter, W.C. (IEEE, 2018)Increase in exports is essential for economic growth in developing countries. In Southern Africa the development of effective multi-national trade corridors is the single biggest stumbling block to achieve this objective. ... -
Applying RFID technology to improve efficiency in border-post cargo clearance process
Bhero, Ernest; Hoffman, Alwyn (IEEE, 2013)Stakeholders in cross-border logistics and trade corridors have always been concerned about ways of improving operational efficiency. Cargo owners and cargo forwarders have been particularly concerned with long delays in ... -
Broadband internet access for rural Africa: finding a viable model
Hoffman, Alwyn J.; De Wet, Dawid P. ((WSEAS) World Scientific and Engineering Academy and Society, 2011)While cellular communications have grown exponentially in Africa over the last 10 years, many parts of rural Africa still lack access to broadband Internet services. The question is posed whether this market can be ... -
Characterization and modelling of a customs operation
Hoffman, A.J. (NWU, 2018)Effective risk management is a prerequisite to find an acceptable balance between the objectives of a customs operation and the streamlined flow of goods. This requires the use of well-designed customs risk management models ... -
A combined GPS/RFID system for improved cross-border management of freight consignments
Hoffman, Alwyn J.; Lusanga, Kabanda; Bhero, Ernest (IEEE, 2013)Inefficiency of road freight transport is one of the primary factors that hamper the economy of sub-Saharan Africa. Long delays experienced at border posts are the single biggest contributor towards the slow average movement ... -
Combining different computational techniques in the development of financial prediction models
Hoffman, A.J. (SCITEPRESS, 2014)The prediction of financial time series to enable improved portfolio management is a complex topic that has been widely researched. Modelling challenges include the high level of noise present in the signals, the need to ... -
Combining empirical mode decomposition with neural networks for the prediction of exchange rates
Mouton, J.; Hoffman, A.J. (SCITEPRESS (Science and Technology Publications, Lda.), 2014)This paper proposes a neural network based model applied to empirical mode decomposition (EMD) filtered data for multi-step-ahead prediction of exchange rates. EMD is used to decompose the returns of exchange rates into ... -
Developing multivariate models to predict abnormal stock returns - using cross-sectional differences to identify stocks with above average return expectations
Hoffman, Alwyn J. (SCITEPRESS (Science and Technology Publications, Lda.), 2010)This paper describes the development of multivariate models used to identify stocks with above average return expectations. While most other research involving the development of stock return models involves time-series ... -
Development of a model for road transport fuel management
Hoffman, A.J. (SAIIE, 2016)Road transport is responsible for 76% of cargo movement in South Africa; at the same time transport cost in Sub-Sahara Africa forms a much higher fraction of the total cost of landed goods compared to the rest of the world. ... -
Development of an online reputation monitor by using existing components
Venter, G.J.C.; Venter, W.C.; Hoffman, A.J. (SATNAC, 2014)Customer opinion about companies are very important and companies often get customer feedback via surveys or other official methods. Some customers prefer to voice their opinion on the internet where they take comfort ... -
A digital signature issuing and verification system for auto identification tokens
Geldenhuys, D.J.S.; Hoffman, A.J. (IEEE, 2012)The design of a Digital Signature Issuing and Verification System for Auto Identification Tokens is discussed. A system is proposed that is concerned with proving the validity of physical objects containing digital information ... -
Digital video shot boundary detector investigation
De Klerk, M.G.; Venter, W.C.; Hoffman, A.J. (SATNAC, 2014)Many algorithms have been proposed and evaluated for the detection of shot boundaries in digital video. Although these techniques have been verified, there remains a lack of standardised data to classify which techniques are ... -
Evaluating predictors of abnormal stock returns multivariate models
Hoffman, A.J. (ACTA Press, 2010)In recent years much research effort has been spent on the development of statistical and neural network techniques to predict abnormal stock returns. Much previous work focused on time series prediction of stock returns, ... -
Freight tracking cost analysis to improve logistics management operations
De Coning, A.; Hoffman, A.J. (SATNAC, 2014)The cross-border freight industry suffers from inefficiencies that can be addressed by implementing technology based systems. Inefficiencies cause time delays at amongst others border posts and weigh stations that in ... -
Geometry based analysis of an alternative RFID interrogator placement for electronic vehicle identification
Hoffman, Alwyn Jakobus; Pretorius, Albertus; Wang, Yifan (IEEE, 2015)This paper proposes a solution for reliable in-traffic electronic vehicle detection based on UHF passive RFID (ISO/IEC 18000-63 - UHF Type C). The classic overhead placement of an interrogator reading a windscreen or plate ... -
Improving cold chain logistics through RFID temperature sensing and predictive modelling
Emenike, Christian C.; Van Eyk, Nardus P.; Hoffman, Alwyn J. (IEEE, 2016)The global Cold Chain Logistics (CCL) industry has grown in size with significant positive impact on the GDP of many economies. It however stills suffers from poorly managed service level agreements, inadequate cold chain ... -
An intelligent freight corridor overload control system
Hoffman, Alwyn J.; De Coning, Arno (IEEE, 2014)Overload control is an important aspect of freight corridors in developing countries that largely depend on road transport to move goods between ports and areas of production and consumption. As the frequent weighing ... -
An investigation into the economics of fuel management in the freight logistics industry
Hoffman, Alwyn J.; Van der Westhuizen, Marius; Naidoo, Jitesh (IEEE, 2014)The transport and logistics industry has to confront many challenges to achieve the objective of efficient distributed operations, such as vehicle and cargo traceability and security. Research has identified effective ... -
Kalman Filter based RFID tag velocity estimation in the presence of frequency hopping
Bester, Nico-Paul; Hoffman, Alwyn (IEEE, 2019)This paper compares different techniques for estimating the velocity of UHF RFID tags within practical applications. We use COTS RFID equipment complying with ISO18000-6C standards, including the use of frequency hopping, ... -
Neural models for benchmarking of truck driver fuel economy performance
Hoffman, Alwyn J. (INSTICC, 2019)The transport industry is a primary contributor towards emissions that impact climate change. Fuel economy is also of critical importance to the profitability of road freight transport operators. Empirical evidence identified ...