Browsing Research Articles (Computer Science) by Title

Browsing Research Articles (Computer Science) by Title

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  • Database application schema forensics 
    Beyers, Hector Quintus; Olivier, Martin S.; Hancke, Gerhard P. (Computer Society of South Africa, 2014-12)
    The application schema layer of a Database Management System (DBMS) can be modi ed to produce results that do not re ect the data actually stored in the database. For example, table structures may be corrupted by changing ...
  • Deadlock-freeness of hexagonal systolic arrays 
    Gruner, Stefan; Steyn, T.J. (Elsevier, 2010-07)
    With the re-emergence of parallel computation for technical applications in these days also the classical concept of systolic arrays is becoming important again. However, for the sake of their operational safety, the ...
  • Decision-maker’s preference-driven dynamic multi-objective optimization 
    Adekoya, Adekunle Rotimi; Helbig, Marde (MDPI, 2023-10)
    Dynamic multi-objective optimization problems (DMOPs) are optimization problems where elements of the problems, such as the objective functions and/or constraints, change with time. These problems are characterized by two ...
  • Degrees of stochasticity in particle swarm optimization 
    Oldewage, E.T.; Engelbrecht, A.P.; Cleghorn, Christopher Wesley (Springer, 2019-12)
    This paper illustrates the importance of independent, component-wise stochastic scaling values, from both a theoretical and empirical perspective. It is shown that a swarm employing scalar stochasticity in the particle ...
  • Design of a hybrid command and control mobile botnet 
    Pieterse, Heloise; Olivier, Martin S. (Journal of Information Warfare, 2013)
    The increasing popularity and improvement in capabilities offered by smartphones caught the attention of botnet developers. Now the threat of botnets is moving towards the mobile environment. This study presents the design ...
  • Detecting manipulated smartphone data on Android and iOS devices 
    Pieterse, Heloise; Olivier, Martin S.; Van Heerden, Renier (Springer, 2019-01-25)
    Ever improving technology allows smartphones to become an integral part of people’s lives. The reliance on and ubiquitous use of smartphones render these devices rich sources of data. This data becomes increasingly important ...
  • Differential evolution for dynamic environments with unknown numbers of optima 
    Du Plessis, M.C. (Mathys Cornelius); Engelbrecht, Andries P. (Springer, 2013-01)
    This paper investigates optimization in dynamic environments where the numbers of optima are unknown or fluctuating. The authors present a novel algorithm, Dynamic Population DifferentialEvolution (DynPopDE),which is ...
  • Digital behavioral-fingerprint for user attribution in digital forensics : are we there yet? 
    Ikuesan, Adeyemi Richard; Venter, H.S. (Hein) (Elsevier, 2019-09)
    The need for a reliable and complementary identifier mechanism in a digital forensic analysis is the focus of this study. Mouse dynamics have been applied in information security studies, particularly, continuous authentication ...
  • Digital forensic application requirements specification process 
    Omeleze, Stacey; Venter, H.S. (Hein) (Taylor and Francis, 2019)
    The requirement to identify the cause of an incident, following the trail of events preceding an incident, as well as proving the consistency of the potential evidence recovered from the alleged incident, ultimately demand ...
  • A digital forensic readiness architecture for online examinations 
    Kigwana, Ivans; Venter, H.S. (Hein) (Computer Society of South Africa, 2018-07-10)
    Some institutions provide online courses to students to ease the courses’ workload. Online courses can also be convenient because the online course content management software conducts marking of tests and examinations. However, ...
  • Digital forensic readiness framework for ransomware investigation 
    Singh, Avinash; Ikuesan, Adeyemi Richard; Venter, H.S. (Hein) (Springer, 2019)
    Over the years there has been a significant increase in the exploitation of the security vulnerabilities of Windows operating systems, the most severe threat being malicious software (malware). Ransomware, a variant of ...
  • Digital forensic science : a manifesto 
    Olivier, Martin S. (Computer Society of South Africa, 2016-12)
    Most members of the public probably had a rather vague notion of forensic science until various TV shows — starting with CSI — carried an image of a forensic utopia into our living rooms on a weekly basis. In general we ...
  • Digital forensics and the big data deluge — some concerns based on Ramsey theory 
    Olivier, Martin S. (Springer, 2020-08)
    Constructions of science that slowly change over time are deemed to be the basis of the reliability with which scientific knowledge is regarded. A potential paradigm shift based on big data is looming – many researchers ...
  • Digital forensics supported by machine learning for the detection of online sexual predatory chats 
    Ngejane, C.H. (Hombakazi); Eloff, Jan H.P.; Sefara, T.J.; Marivate, Vukosi (Elsevier, 2021-03)
    Chat-logs are informative digital footprints available on Social Media Platforms (SMPs). With the rise of cybercrimes targeting children, chat-logs can be used to discover and flag harmful behaviour for the attention of ...
  • Discriminatory Gleason grade group signatures of prostate cancer : an application of machine learning methods 
    Mokoatle, Mpho; Mapiye, Darlington; Marivate, Vukosi; Hayes, Vanessa M.; Bornman, Maria S. (Riana) (Public Library of Science, 2022-06-09)
    One of the most precise methods to detect prostate cancer is by evaluation of a stained biopsy by a pathologist under a microscope. Regions of the tissue are assessed and graded according to the observed histological ...
  • Diverging deep learning cognitive computing techniques into cyber forensics 
    Karie, Nickson M.; Kebande, Victor Rigworo; Venter, H.S. (Hein) (Elsevier, 2019)
    More than ever before, the world is nowadays experiencing increased cyber-attacks in all areas of our daily lives. This situation has made combating cybercrimes a daily struggle for both individuals and organisations. ...
  • Diversity rate of change measurement for particle swarm optimisers 
    Bosman, Phlippie; Engelbrecht, Andries P. (Springer, 2014)
    The diversity of a particle swarm can reflect the swarm's explorative/exploitative behaviour at a given time step. This paper pro- poses a diversity rate of change measure to quantify the rate at which particle swarms ...
  • DNA sequence design for DNA computation based on binary particle swarm optimization 
    Ibrahim, Zuwairie; Khalid, Noor Khafifah; Buyamin, Salinda; Ibrahim, Ismail; Mukred, Jameel Abdulla Ahmed; Yusof, Zulkifli Md.; Mohamad, Mohd Saberi; Mokhtar, N.; Saaid, Muhammad Faiz Mohamed; Engelbrecht, Andries P. (ICIC International, 2012-05)
    Deoxyribonucleic Acid (DNA) has certain unique properties such as self- assembly and self-complementary in hybridization, which are important in many DNA- based technologies. DNA computing, for example, uses these ...
  • The effect of deep learning methods on deepfake audio detection for digital investigation 
    Mcuba, Mvelo; Singh, Avinash; Ikuesan, Richard Adeyemi; Venter, H.S. (Hein) (Elsevier, 2023)
    Voice cloning methods have been used in a range of ways, from customized speech interfaces for marketing to video games. Current voice cloning systems are smart enough to learn speech characteristics from a few samples and ...
  • Effek van ’n alternatiewe notasie op die begrip van wiskundige konsepte vir Graad 12 leerders 
    Du Plessis, Susanna H.; Pieterse, Vreda (AOSIS Open Journals, 2017)
    Mathematics is an important cornerstone to most forms of tertiary education and the quality of mathematics education an important determinant for a nation’s economic progress. We propose a study to determine the effect ...