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This paper discusses strategies to improve the application process for drones and Part 101 of the regulations for the approval of applications. Drones have the potential to transform the world by doing things differently and improving technology in the future. The use of drones is growing fast, and the need for control is important for reasons of safety and privacy. A qualitative method of data collection and analysis was used in this study, using the South African Civil Aviation Authority (SACAA) as a case study. Telephonic interviews were conducted to collect data from participants and to understand the issues affecting the drone application process. Drone operators were interviewed to collect data on the drone application process and the regulations. The researcher discovered that there were issues affecting the existing drone application and approval processes, such as restrictive regulations, the inclusion of manned aircraft requirements, slow issuing of Remotely Piloted Aircraft Systems operators' certificates, and the capital needed to enter the drone business. Recommendations are made to improve the drone application and approval processes. Hierdie artikel bespreek strategieë om die aansoekproses vir hommeltuie en art 101 van die regulasies vir die goedkeuring van aansoeke te verbeter. Hommeltuie het die potensiaal om die wêreld te transformeer deur dinge anders te doen en tegnologie in die toekoms te verbeter. Die gebruik van hommeltuie groei vinnig, en die behoefte aan beheer is belangrik vir redes van veiligheid en privaatheid. 'n Kwalitatiewe metode van data-insameling en -analise is in hierdie studie gebruik, met die Suid-Afrikaanse Burgerlugvaartowerheid (SABLO) as 'n gevallestudie. Telefoniese onderhoude is gevoer om data van deelnemers in te samel en om die kwessies rondom die hommeltuig-aansoekproses te verstaan. Hommeltuigoperateurs is onderhoude mee gevoer om data oor die hommeltuigaansoekproses en die regulasies in te samel. Die navorser het bevind dat daar kwessies was wat die bestaande hommeltuigaansoek- en -goedkeuringsprosesse beïnvloed, soos beperkende regulasies, die insluiting van bemande vliegtuigvereistes, die stadige uitreiking van RPAS-operateurssertifikate en die kapitaal wat nodig is om die hommeltuigbesigheid te betree. Aanbevelings word gemaak om die hommeltuigaansoek- en goedkeuringsprosesse te verbeter.

The work done in this paper is an extension of the work done by Mpofu et al in [1]. The motivation for this paper is to show the potential of quantum bio-sensing techniques in applications to complex viruses like the human immunodeficiency virus (HIV) and to show it's potential in binding reactions where the signal is small and can potentially be buried in noise. In this paper we show theoretically that using quantum states of light such as the Fock state improves the precision in the estimation of kinetic parameters measured from the sensorgrams produced by the Kretschmann conguration. Though the Fock state is not the only quantum state in this study we look only at the Fock state because it has been shown to be the state which offers the best enhancement [1]. We show here that the Fock state allows us to measure the parameters more accurately in comparison to the classical (Coherent) state of light. We consider in this paper a binding reaction involving HIV type 1 (HIV-1). Specifically we look at the binding reaction between a variant of HIV-1 protease and nelnavir which is an inhibitor. Such a study is also offers value for drug discovery research as it points to the development of new technologies which can be applied to testing the efficacy of new drugs. Quantum technologies can prove to be useful in the fight against the HIV pandemic and assist in the continual research towards the development of treatments and a cure., We would like to retract because there was a bit of miscommunication on my part when I submitted the paper. I had assumed that I had the green light to submit but the other authors needed more time to review

This paper presents a sustainability assessment of manufacturing processes for transport equipment, using fuzzy grey relational analysis. The metrics or sub-indicators for sustainability indicators and their relative applications in the manufacturing processes are used to create sustainability matrices, which are then compared with an ideal series in order to determine grades for the processes using the grey relational model. Grades in the form of values are determined for the performances of the manufacturing processes of four different kinds of transport equipment. The grades identified manufacturing processes in which the performance of the sustainability indicators could be improved. Hierdie artikel bied 'n volhoubaarheidsevaluering van vervaardigings-prosesse vir vervoertoerusting aan, deur gebruik te maak van wasige grys relasionele analise. Die maatstawwe of sub-aanwysers vir volhoubaarheidsaanwysers en hul relatiewe toepassings in die vervaardigingsprosesse word gebruik om volhoubaarheidsmatrikse te skep, wat dan met 'n ideale reeks vergelyk word ten einde grade vir die prosesse te bepaal deur die grys relasionele model te gebruik. Grade in die vorm van waardes word bepaal vir die prestasie van die vervaardigingsprosesse van vier verskillende soorte vervoertoerusting. Die grade het vervaardigingsprosesse geïdentifiseer waar die prestasie van die volhoubaarheidsaanwysers verbeter kan word.

Hydraulic actuator is a type of clamp used in a reconfigurable assembly fixture for exact positioning and effective immobilisation of workpiece during the assembly process. However, due to their nonlinearity, there is a need to design a control system for their effective performance. This study presents a distributive approach to mathematical modelling and position control of multiple hydraulic actuators used as a clamping system in a reconfigurable assembly fixture. The electrohydraulic system is verified experimentally in order to observe the synchronisation of the hydraulic actuators. The mathematical model of the system is developed in the Simulink environment. A Simulink model of the system is developed from the mathematical model and simulated with a fuzzy-PID controller in order to obtain the response of all the actuators and other operating characteristics of the system. Simulation results are shown graphically in order to verify the theoretical development.