Institution
North-West University
Recent research
- Physics & SpaceOpen access
A complete correspondence between the Newman–Penrose and 1+1+2 formalisms
Abstract We establish a correspondence between the Newman–Penrose and 1+1+2 semitetrad covariant formalisms by expressing all Newman–Penrose spin coefficients, Ricci scalars, and Weyl scalars in terms of the scalar, vector, and tensor variables of the 1+1+2 decomposition. In addi...
- AI & ComputingOpen access
{ "background": "Evaluating the impact of technological and managerial interventions on manufacturing systems efficiency requires robust quasi-experimental methods. The difference-in-differences (DiD) model is widely applied in econometrics but its methodological rigour and assum...
- Climate & EnvironmentOpen access
Abstract. Particle linear depolarization ratio is a widely used parameter in lidar research to distinguish different aerosol types and the thermodynamic phase of water. It is most frequently measured at ultraviolet and visible wavelengths (355 and 532 nm), yet multi-wavelength ob...
- AI & ComputingOpen access
{ "background": "Evaluating the impact of technological and managerial interventions on manufacturing systems efficiency requires robust quasi-experimental methods. The difference-in-differences (DiD) model is widely applied in econometrics but its methodological rigour and assum...
- Biology
Assessing Soil Organic Carbon Fractions in a Soil Applied with Pig Slurry
Abstract South African farmers have regarded the use of pig slurry (PS) as a method to sequestrate carbon (C) into the soil and subsequently increase soil productivity. The aim of this study was to assess C fractions and the correlation between the labile and non-labile C pools....
- Climate & EnvironmentOpen access
In many low- and middle-income countries, unreliable electricity supply has led to widespread reliance on petrol (gasoline) and diesel generators. The type of fuel influences both the quantity and composition of emissions, which contribute substantially to air pollution and pose...
- AI & ComputingOpen access
Colorectal cancer (CRC) is one of the most prevalent and life-threatening cancers worldwide, where early detection is crucial for improving patient outcomes. Image segmentation plays a fundamental role in medical analysis by enabling precise polyp detection, yet traditional metho...
- Engineering & TechnologyOpen access
Female Scrap Collectors in Qumbu, Eastern Cape, South Africa Through the Lens of Resilience Theory
Background/Objectives: Women working in the informal sector are frequently exposed to multiple layers of vulnerability and trauma, yet their mental health experiences remain insufficiently explored. Methods: This qualitative study examined the mental health implications of trauma...
- BiologyOpen access
Comparative in vivo evaluation of colistin resistance determinants in Escherichia coli clone ST131
Background Colistin is a last-resort antimicrobial for multidrug-resistant (MDR) Gram-negative infections. Health risks associated with colistin resistance are commonly inferred from resistance phenotypes, despite limited in vivo evidence linking resistance determinants to pathog...
- Society & Economics
Purpose This paper aims to explore the synthesis of transformative learning (TL) with curricular nuances and autonomy-supportive learning to develop sustainability mindsets in higher education institutions (HEIs), particularly in teacher education programs, in support of Agenda20...
- BiologyOpen access
Agathosma betulina (P.J. Bergius) Pillans is an aromatic medicinal shrub endemic to South Africa’s Cape Floristic Region, widely used in traditional medicine to treat urinary tract infections, gastrointestinal disorders, colds, and wounds. Despite its commercial importance, limit...