output
19992024
most citedInflation of 430-parsec bipolar radio bubbles in the Galactic Centre by an energetic event

150 citations

researchers with a paper here

Counting papers with at most 25 authors, so collaboration author lists do not stand in for the people here.

collaborating institutions

14 papers

math-ph2024★ 4 cited

Linearization of Newton's second law

Andronikos Paliathanasis

The geometric linearization of nonlinear differential equation is a robust method for the construction of analytic solutions. The method is related to the existence of Lie symmetri…

cs.CY2021

Towards an Integrated Knowledge Management and Information and Communication Technology Framework for Improving Disaster Response in a Developing Country Context

Teurai Matekenya, Ephias Ruhode

This paper is part of an ongoing project that seeks to address a gap in disaster information coordination and collaboration in Zimbabwe. There is lack of coordinated information an…

cs.CY2021★ 7 cited

Factors Enhancing E-Government Service Gaps in a Developing Country Context

Gilbert Mahlangu, Ephias Ruhode

Globally, the discourse of e-government has gathered momentum in public service delivery. No country has been left untouched in the implementation of e-government. Several governme…

cs.CY2021★ 1 cited

EHealth Technologies Integration with Healthcare Work Activities in Public Hospitals: A Critical Realist Perspective

Mourine Achieng, Ephias Ruhode

Integration of eHealth technologies with healthcare work activities has seen great advancement in many healthcare systems in developing countries. However, these efforts have been…

physics.ao-ph2021★ 53 cited

Three-dimensional imaging of waves and floe sizes in the marginal ice zone during an explosive cyclone

Alberto Alberello, Luke Bennetts, Miguel Onorato +11

The marginal ice zone is the dynamic interface between the open ocean and consolidated inner pack ice. Surface gravity waves regulate marginal ice zone extent and properties, and,…

cs.CL2020★ 31 cited

A Framework for Pre-processing of Social Media Feeds based on Integrated Local Knowledge Base

Taiwo Kolajo, Olawande Daramola, Ayodele Adebiyi +1

Most of the previous studies on the semantic analysis of social media feeds have not considered the issue of ambiguity that is associated with slangs, abbreviations, and acronyms t…

astro-ph.GA2019★ 150 cited

Inflation of 430-parsec bipolar radio bubbles in the Galactic Centre by an energetic event

I. Heywood, F. Camilo, W. D. Cotton +96

The Galactic Centre contains a supermassive black hole with a mass of 4 million suns within an environment that differs markedly from that of the Galactic disk. While the black hol…

physics.gen-ph2018★ 4 cited

Singularity-free approximate analytical solution of capillary rise dynamics

Bohua Sun

Capillary rise is one of the most well-known capillarity; however, no single and complete analytic solution has ever been obtained yet. This paper used the singularity-free equatio…

physics.gen-ph2018★ 5 cited

Note on Divergence of the Chapman-Enskog Expansion for Solving Boltzmann Equation

Nanxian Chen, Bohua Sun

Within about a year (1916-1917) Chapman and Enskog independently proposed an important expansion for solving the Boltzmann equation. However, the expansion is divergent or indeterm…

physics.gen-ph2018★ 12 cited

Kepler's third law of n-body periodic orbits in a Newtonian gravitation field

Bohua Sun

This study considers the periodic orbital period of an n-body system from the perspective of dimension analysis. According to characteristics of the n-body system with point masses…

physics.flu-dyn2015★ 17 cited

The Spatial Scaling Laws of Compressible Turbulence

Bohua Sun

The spatial scaling laws of velocity kinetic energy spectrum for compressible turbulence flow and its density-weighted counterpart have been formulated in terms of wavenumber, diss…

gr-qc2005★ 70 cited

Bounce Conditions in f(R) Cosmologies

Sante Carloni, Peter K. S. Dunsby, Deon Solomons

We investigate the conditions for a bounce to occur in Friedmann-Robertson-Walker cosmologies for the class of fourth order gravity theories. The general bounce criterion is determ…

gr-qc2001★ 51 cited

Bounce behaviour in Kantowski-Sachs and Bianchi Cosmologies

Deon Solomons, Peter Dunsby, George Ellis

Many cosmological scenarios envisage either a bounce of the universe at early times, or collapse of matter locally to form a black hole which re-expands into a new expanding univer…

physics.geo-ph1999

Incipient Motion Criteria for a Rigid Sediment Grain on a Rigid Surface

S. J. Childs

Criteria for the incipient motion of a rigid body initially resting on a rigid surface are formulated from first principles in this work. A modified Coulomb friction model and an a…