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Gibbons D.,CC Technologies
Test Engineering and Management | Year: 2014

David Gibbons, equipment support technician, Keysight Technologies, discusses why periodic maintenance (PM) should be performed on environmental chambers. The biggest reason is downtime. A good PM checks the health of each of the parts of a chamber. In addition, the maintainer needs to actually operate the chamber, checking to see that it cools, humidifies, and dehumidifies well. The user can also help the maintainer know of any oddities to the behavior of the chamber that have been noted, as this can help overcome the trouble parts. The maintainer should also check the quality of control. The maintainer should also just listen to the machine, as unusual noises are a sign of problems.

Marshall L.,University of Pretoria | Pieterse V.,University of Pretoria | Thompson L.,University of Pretoria | Venter D.M.,CC Technologies
ACM Transactions on Computinig Education | Year: 2016

Employers require software engineers to work in teams when developing software systems. It is therefore important for graduates to have experienced teamwork before they enter the job market. We describe an experiential learning exercise that we designed to teach the software engineering process in conjunction with teamwork skills. The underlying teaching strategy applied in the exercise maximises risks in order to provide maximal experiential learning opportunities. The students are expected to work in fairly large, yet short-lived, instructor-assigned teams to complete software engineering tasks. After undergoing the exercise our students form self-selected teams for their capstone projects. In this article, we determine and report on the influence the teaching exercise had on the formation of teams for the capstone project. By analysing data provided by the students through regular peer reviews we gain insight into the team dynamics as well as to what extent the members contributed to the team effort. We develop and present a graphical model of a capstone project team which highlights participation of individuals during the teaching exercise. The participatory history of the members is visualised using segmented concentric rings. We consider how this visualisation can aid the identification of capstone project teams that are at risk. In our experience the composition of the team and the behaviour of other members in the team may have a marked impact on the behaviour of each individual in the team. We established a team classification in order to model information about teams. We use a statistical clustering method to classify teams. For this we use team profiles that are based on the participatory levels of its members. The team types that emerge from the clustering are used to derive migration models. When we consider migration, we build spring models to visualise the teams through which individuals migrate. We colour code the teams to characterise them according to the team types that were identified during the cluster classification of the teams. Owing to the complexity of the resulting model, only migrations for capstone team members who have worked together during the exercise or for solitary capstone team members are modelled. These models support the identification of areas of interest that warrant further investigation. To conclude, we present our observations from the analysis of team compositions, team types, and team migrations and provide directions for future work and collaborations. © 2016 ACM.

Bongers F.,CC Technologies | Alexander J.,United Technologies | Marcroft J.,TimberSolve | Crawford D.,Napier University | Hairstans R.,Napier University
International Wood Products Journal | Year: 2013

The benefits from acetylation of wood to enhance resistance against fungal decay and dimensional stability have been known for many years. Since 2007 Accsys Technologies has been commercially producing Accoya wood that is based on acetylation of Radiata pine. Accoya has shown its potential for many applications, even for structural use. However, due to limited engineering data each project had to be evaluated on a case-by-case basis. Based on research at various universities and institutes, Accsys Technologies has in combination with TimberSolve and ARUP, developed a handbook to assist designers and structural engineers produce reliable, durable and consistent designs utilising Accoya wood in structural applications. © 2013 IWSc, the Wood Technology Society of the Institute of Materials, Minerals and Mining.

CC Technologies | Date: 2013-02-08

A portable device for communicating text messages over a wireless communication link. Short range communications are enabled over open frequencies between at least two devices. The devices are pre-coded to only exchange messages with previously identified devices.

CC Technologies | Date: 2013-02-15

A gas fired catalytic heater is provided that foregoes the need for an electrical heating element to provide the activation energy for the hydrocarbon catalyst pad. An alcohol self-igniting catalyst pad is used to provide the activation energy to the hydrocarbon catalyst pad thereby removing dependence of the heater on an outside electrical energy source to initiate start-up of the heater. The catalyst pad includes a flexible wash coat; a noble metal dispersed on the wash coat; an anti-sintering element saturating the wash coat; and a catalyst promoter saturating the wash coat.

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