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Beacon Frame Manipulation to Mitigate Rogue Access Points: Case of Android Smartphone Rogue Access Points
No full textThis is a journal article whose case study many focuses on Android Rogue access points.The use of wireless devices to access corporate network resources is now part of the norm within corporate environments. When wireless users need to connect to a network they hardly question the source of their connectivity. Mobile phones, particularly smartphones allow users to access network resources. These harmless looking wireless devices can be a source of major threats if configured to be so. The Internet is awash with mobile apps capable of performing packet sniffing. These applications, coupled with the capability of the smartphone to be configured as an access point, can present a Smartphone Rogue Access Point. Access Points advertise their availability using what is called a beacon frame. This research paper proposes a solution which restructures this beacon frame to include an Authentic Access Point Value which can be used to defend against Rogue Access Points
Case of the Symmetrically Accelerated Twins
No full textThis is the second paper to the article title, Case of the Symmetrically Accelerated TwinsThis is the second instalment in a four part series, the aim of the work being to introduce absolute motion into Einstein?s Special Theory of Relativity (STR). Herein, we depart from the traditional
case where one twin stays put while the other rockets into space, we consider the case of identically accelerated twins. Both twins depart at uniform relativistic speeds in opposite directions for a round
trip from the Earth on their 21th birthday destined into space to some distant constellation that is a distance L0 in the rest frame of the Earth. A proper application of Einstein?s STR tells us that the Earth bound observers will conclude that on the day of reunion, both twins must both have aged the same albeit their clocks (which where initially synchronized with that of the Earth bound
observers) will have registered a duration less than that registered by the Earth bound observers. In the traditional twin paradox, it is argued that the stay at home twin will have aged more than the travelling twin and the asymmetry is attributed to the fact that the travelling twin?s frame of reference is not an inertial reference frame during the periods of acceleration and deceleration making it ?illegal? for the travelling twin to use the STR in their frame, thus ?resolving? the paradox. This same argument does not hold in the case considered here as both twins will undergo identical experiences where each twin sees the other as the one that is in motion. This means, each twin must conclude that the other twin is the one that is younger. They will conclude that their ages must
be numerically different, thus disagreeing with the Earth bound observers that their ages are the same. This leads us to a true paradox that throws Einstein?s Philosophy of Relativity into complete disarray
On the Preponderance of Matter Over Antimatter: Symmetry Properties of the Curved Spacetime Dirac Equations
No full textThis article was not publicised before.Quantum Electrodynamics (QED) is built on the original Dirac equation [1, 2], an equation that exhibits perfect symmetry in that it is symmetric under charge conjugation (C), space (P) and time
(T ) reversal and any combination of these discrete symmetries. We demonstrate herein that the proposed Lorentz invariant Curved Spacetime Dirac Equations (CSTD-Equations) [3], while they obey CPT and PT -Symmetries, these equations readily violate C, P, T , CP and CT -Symmetries. Realising this violation, namely the C-Violation, we take this golden opportunity to suggest that the Curved Spacetime Dirac Equations may help in solving the long standing riddle and mystery
of the preponderance of matter over antimatter. We come to the tentative conclusion that if these CSTD-Equations are to explain the preponderance of matter over antimatter, then, photons are
to be thought of as described by the flat version of this set of equations, while ordinary matter is to be explained by the positive and negatively curved spacetime versions of this same set of equations.National Uni-versity of Science & Technology (NUST)?s Research & Innovation Department and Research Board, Prof. Dr. Mundy, Dr. P. Makoni and Prof. Y. S. Naik
Optimisation of a TV White Space Broadband Market Model for Rural Entrepreneurs
No full textJournal article published by River Publishers in the Journal of ICT, Vol. 2, 109?128.Leveraging on recent TV white space communications developments in regulations,
standards initiatives and technology, this paper considers a suitable next generation network comprising of two primary users (PUs) that compete to offer a service to a group of secondary users (SUs) in the form of mesh routers that belong to different entrepreneurs participating in a noncooperative TV white space trading. From a game theoretic perspective the non-cooperative interaction of the PUs is viewed as a pricing problem wherein each PU strives to maximize its own profit. Subsequently the problem is
formulated as a Bertrand game in an oligopolistic market where the PUs are players who are responsible for selling TV white spectrum in the market while the SUs are the players who are the buyers of the TV white spectrum. The PUs strategise by way of price adjustment, so much such that SUs tend to favour the lowest price when buying. The inter- operator agreements are based on the delay and throughput QoS performance optimization metrics respectively. A performance evaluation of both models is comparatively performed with regards to parameters such as cost, generated revenue, profit, best response in price adjustments and channel quality. The throughput based analytic model fares better in terms of providing channel quality as it has a better strategy
which is a decreased price value
Error Correction for Improved Academic Writing in English: Worksheets for lecturers and guidelines for students
No full textError correction Worksheets for lecturers and guidelines for students.Error correction exercises can dramatically improve academic writing abilities. Identifying
errors is a crucial first step. Thereafter, one can develop an ability to edit one?s own work.
The following is the result of a project conducted by Dr Drew Shaw who lectures in
communication skills and English for academic purposes. A range of errors were gathered
from student essays, dissertations and examination scripts in the Faculty of
Communication and Information Science at the National University of Science and
Technology (NUST)
On the expanding earth and shrinking moon
No full textThis work is licensed under the Creative Commons Attribution International License (CC BY).Exactly 101 years ago, German scientist Alfred Lothar Wegener, sailed against the prevailing wisdom
of his day when he posited that not only have the Earth?s continental plates receded from
each other over the course of the Earth?s history, but that they are currently in a state of motion
relative to one another. To explain this, Wegener set forth the hypothesis that the Earth must be
expanding as a whole. Wegener?s inability to provide an adequate explanation of the forces and
energy source responsible for continental drift and the prevailing belief that the Earth was a rigid
solid body resulted in the acrimonious dismissal of his theories. Today, that the continents are
generally receding from each other is no longer a point of debate but a sacrosanct pillar of modern
geology and geophysics. What is debatable is the energy source driving this phenomenon. Herein,
we hold that continental drift is a result of the Earth undergoing a secular radial expansion. An
expanding Earth hypothesis is currently an idea that is not accepted on a general consensus level.
Be that as it may, we show herein that the law of conversation of angular momentum and energy
entail that the Earth must not only expand as a consequence of the secular recession of the Earth-
Moon system from the Sun, but invariably, that the Moon must contract as well. As a result, the
much sort for energy source driving plate tectonics can (hypothetically) be identified with the
energy transfers occurring between the orbital and rotational kinetic energy of the Earth. If our
calculations are to be believed?as we do; then, the Earth must be expanding radially at a paltry
rate of about +1.50 mm/yr while the Moon is contracting radially at a relatively high rate of about
?410 mm/yr
A Simple and General Proof of Beal?s Conjecture (I)
No full textA Simple and General Proof of Beal?s
Conjecture (I)is a published article of the department of applied physics.Using the same method that we used in [1] to prove Fermat?s Last Theorem in a simpler and truly
marvellous way, we demonstrate that Beal?s Conjecture yields?in the simplest imaginable manner,
to our effort to prove it
On a Simpler, Much More General and Truly Marvellous Proof of Fermat?s Last Theorem (II)
No full textThis is a preprint article submitted to viXra.org Version 3English mathematics Professor, Sir Andrew John Wiles of the University of Cambridge
finally and conclusively proved in 1995 Fermat?s Last Theorem which had for 358 years notoriously resisted all efforts to prove it. Sir Professor Andrew Wiles?s proof employs very advanced mathematical tools and methods that were not at all available in the known World during Fermat?s days. Given that Fermat claimed to have had the ?truly marvellous? proof, this fact that the proof only came after 358 years of repeated failures by many notable mathematicians and that the proof came from mathematical tools and methods which are far ahead of Fermat?s
time, this has led many to doubt that Fermat actually did possess the ?truly marvellous?
proof which he claimed to have had. In this short reading, via elementary arithmetic methods which make use of Pythagoras theorem, we demonstrate conclusively
that Fermat?s Last Theorem actually yields to our efforts to prove it.Prof. Dr. P. Mundy, Dr. P. Makoni. Dr. D. J. Hlatswayo, and Prof. Y.S. Nai
Conference Welcome Remarks : Prof. Lindela R. Ndlovu : Vice Chancellor ? NUST
No full textProf. Lindela R. Ndlovu : Vice Chancellor : National University of Science and Technology welcomes guests from different parts of the world and introduce the topic that will be discussed.Prof. Lindela R. Ndlovu : Vice Chancellor : National University of Science and Technology welcome guests from various institutions and different parts of the world to the inaugural ?International Conference on Gender Mainstreaming at
High Education Institutions beyond 2015: Equity and Equality? hosted by the National University of Science and
Technology
Microbial Analysis of Woven Cotton Kitchen Towels
No full textMicrobial Analysis of Woven Cotton Kitchen Towels is a journal articleKitchen towels are exposed to infestation by microbes during their use in multiple applications which include wiping dishes and utensils, drying hands and wiping spills from surfaces. These microbes can contaminate food meant for consumption. The purpose of this study was to determine the presence, degree and nature of microbes hazardous to health, that are contaminating kitchen towels. Nine cotton woven towels were distributed to nine households for use in their normal ways. Microbes were then extracted from towels daily through swabbing, before and after washing the used towels. The swabs were then analysed. Households were also given a questionnaire to indicate the daily application of the towel. A Standard Pour Plate Method with an advantage of counting colony forming units of live microbes only was adopted. Results showed that microbial levels increased with days of usage, from the order of 103cfu/ml to 105cfu/ml between second and ninth days, before laundering. Dangerous microbes such as Staphylococcus aureus, Pseudomonas aeruginosa and Eschericha ecoli were identified. Laundering could not remove all microbes from the towel. Only the laboratory chemical disinfection removed 100% microbes. It was concluded that washing and disinfecting towels through ultraviolet light was the best possible solution as disinfection chemical could remain on towels and passed on to the food