This single journal study provides a comprehensive overview of the history and development of the South African Computer Journal (SACJ, formerly Quaestiones Informaticae), combined with a bibliometric and altmetric analysis spanning 45 years from 1979 to 2023. Citation data were sourced from Google Scholar and Scopus, while Mendeley readership counts were used as an alternative metric indicator. A total of 768 articles were analysed to assess journal productivity, authorship patterns and collaboration trends. On average, 17 articles were published per year, with an average of 8.3 Google Scholar citations per article. Citation data reveal that 60% of articles had Google Scholar citations, while 40% remained uncited. The journal exhibits a notable shift from single authorship to multi-authorship, with co-authored articles increasing from 22% (1979 to 1989) to 70% (1990 to 2023). The results indicate a strong association between collaboration and scholarly impact, as articles with two or three authors consistently achieved higher citation counts and Mendeley readership than single-authored articles. The most productive authors and most cited papers were identified. The SACJ journal metrics were also compared with selected international journals in the Computing discipline.
Blockchain systems persistently struggle to balance scalability, security, and decentralization - the fundamental trilemma hindering enterprise adoption. Existing solutions like Filecoin compromise decentralization when scaling throughput or face security vulnerabilities under adversarial conditions. Motivated by the urgent need for practical trilemma resolution in storage-intensive applications (e.g., medical records, IoT coordination), this study introduces WeaveChain: a novel framework leveraging Arweave’s permanent storage to simultaneously optimize all three dimensions. Our primary aim is to architect a decentralized storage system that achieves: (1) high-throughput transaction processing, (2) provable security against Byzantine failures (malicious or faulty nodes acting arbitrarily), and (3) egalitarian network participation—without mutual trade-offs. By implementing compact 48-byte transactionanchors and adaptive block sizing (1-200MB), the system processes 7,200 transactions per megabyte block, reaching 162 TPS. Comprehensive testing demonstrates 0.82 chain quality under 40% adversarial influence, 99% lower storage than Bitcoin, and Sybil attack resistance. These results establish a new paradigm for trilemma resolution where permanent data anchoring enables scalable, secure, and truly decentralized blockchain storage.
Virtual reality (VR) technology enhances spatial awareness in the virtual environment, yet current menu design research seldom explores how this can support interaction. This study investigates how proprioception, users’ sense of body position, can guide menu selection in immersive VR environments. A menu system was developed to test how users interact with menu items using non-visual senses, supported by visual cues. Across three usability sessions, participants engaged with the system, and their evolving behaviours were examined through performance metrics, observations, interviews, and focus groups. Thematic analysis revealed that while users can learn to use proprioceptive cues for menu selection, they rarely rely on them without visual guidance. Effective use requires systems that support spatial awareness and familiarity, allowing interactions to become intuitive and memorised over time. The study also identifies types of visual guidance linked to varying levels of familiarity with surrounding virtual objects. These findings contribute to VR interaction design by demonstrating how visual and proprioceptive cues affect user behaviour and support efficient, embodied menu selection.
