>Magister Scientiae - MSc / The study explores the completion rates (the number of years a student takes to complete a degree) of graduates at the University of the Western Cape (UWC) in South Africa. The graduates in the study all did at least one semester of statistics in their final year of study. The students' completion will be described with respect to school results and socio-demographics. Differences between students who finished their studies in the prescribed time of three years and those who took longer than the prescribed time will be highlighted. Factors that aid or hinder students from successfully completing their studies in the prescribed time will be analyzed. An entry selection model will be developed to screen the students. This will assist with an enrolment strategy. The most significant result found was that the political environment played the most significant role in throughput. The next significant result from the study showed that the grade 12 aggregate played a significant role in throughput. It is suggested that UWC be proactive in developing alternative methods of selecting students, since the new Further Education Training (FET) school system, which will be implemented in 2006, will omit the grade 12 aggregate.

Manufacturing systems have developed both physically and technologically, allowing production of innovative new products in a shorter lead time, to meet the 21st century market demand. Flexible flow lines for instance use flexible entities to generate multiple product variants using the same routing. However, the variability within the flow line is asynchronous and stochastic, causing disruptions to the throughput rate. Current autonomous variability control approaches decentralise the autonomous decision allowing quick response in a dynamic environment. However, they have limitations, e.g., uncertainty that the decision is globally optimal and applicability to limited decisions. This research presents a novel formula-based autonomous control method centered on an empirical study of the effect of stochastic variability on the performance of flexible human-dependent serial flow lines. At the process level, normal distribution was used and generic nonlinear terms were then derived to represent the asynchronous variability at the flow line level. These terms were shortlisted based on their impact on the throughput rate and used to develop the formula using data mining techniques. The developed standalone formulas for the throughput rate of synchronous and asynchronous human-dependent flow lines gave steady and accurate results, higher than closest rivals, across a wide range of test data sets. Validation with continuous data from a real-world case study gave a mean absolute percentage error of 5%. The formula-based autonomous control method quantifies the impact of changes in decision variables, e.g., routing, arrival rate, etc., on the global delivery performance target, i.e., throughput, and recommends the optimal decisions independent of the performance measures of the current state. This approach gives robust decisions using pre-identified relationships and targets a wider range of decision variables. The performance of the developed autonomous control method was successfully validated for process, routing and product decisions using a standard 3x3 flexible flow line model and the real-world case study. The method was able to consistently reach the optimal decisions that improve local and global performance targets, i.e., throughput, queues and utilisation efficiency, for static and dynamic situations. For the case of parallel processing which the formula cannot handle, a hybrid autonomous control method, integrating the formula-based and an existing autonomous control method, i.e., QLE, was developed and validated.

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Abstract in English, Sesotho and French / Technical and Vocational Education and Training (TVET) colleges in South Africa face several challenges including low throughput rate. Low throughput rates have a strong bearing on the success of the TVET sector and its ability to respond to the needs of the country, such as skills shortages. The aim of the study was to investigate the implications of the National Certificate Vocational (NCV) students’ academic support on the throughput rate at the selected TVET college. Qualitative research methodology has been used to help the researcher to explore and gather rich information on the college throughput rate and provision of academic support. The study utilised a case study design. Participants were student support services and academic staff at the selected TVET college. The collection of participants in this research was using a purposive sampling technique. The researcher recorded and transcribed semi-structured interviews. The analysis of the data is based on thematic data. The themes used were derived from the research objectives and further broken down into categories and sub-categories. The study found that there are various factors that influence the students’ academic performance and the throughput rate such as students’ family background, academic difficulties, poor class attendance, poor infrastructure, lack of professional development opportunities, lack of career guidance, lack of academic support and shortage of Student Support Services (SSS) staff. The study also found that students are not making use of the student support services because of lack of information about the SSS unit at the college. Without proper students’ academic support programmes, students are likely not to succeed academically. Various challenges that hinder the effective utilisation of the academic support services include lack of qualified personnel, being understaffed, low prioritisation of academic support programmes by college management and limited access time. The college needs to develop ties with key stakeholders such as other TVET colleges and the Department of Basic Education to provide a forum for sharing crucial academic support information. The researcher suggests that more trained and qualified personnel should be hired to support students’ academic support. Administration of admission tests for students should be enhanced, and the test results should be available round the clock. College management should demonstrate dedication to the well-being of students by prioritising and acknowledging academic support as vital to the academic performance of students. / Likoleche tsa thuto ea mahlale le koetliso (TVET) Afrika Boroa li tobana le liphephetso tse 'maloa ho kenyeletsa le tekanyetso e tlase. Litefiso tse tlase tse kenang li na le katleho e kholo katlehong ea lekala la TVET le bokhoni ba eona ba ho arabela litlhoko tsa naha tse kang khaello ea litsebo. Morero oa thuto e ne e le ho etsa lipatlisiso mabapi le litlamorao tsa tšehetso ea thuto ea baithuti ba NCV ka sekhahla sa thuto e fumanehang kolecheng ea TVET. Tlhahlobo e matla ea lingoliloeng e ile ea etsoa ho lekola phepelo ea lits'ebeletso tsa tšehetso ea thuto le sekhahla sa koleche e tsoang. Mokhoa oa ho etsa lipatlisiso tse nepahetseng o ile oa sebelisoa ho lumella mofuputsi ho fumana leseli le fumanehang ka sekhahla sa koleche le tlhahiso ea tšehetso ea thuto. Boithuto bo sebelisitse moralo oa thuto ea linyeoe. Barupeluoa e ne e le litšebeletso tsa tšehetso ea baithuti le basebetsi ba TVET koleche e khethueng. Mokhoa o nang le sepheo oa ho etsa sampole o sebelisitsoe ho khetha barupeluoa thutong ena. Lipuisano tse hlophisitsoeng hantle li ile tsa tlalehoa tsa ba tsa hatisoa. Ho ile ha sebelisoa tlhahlobo ea tlhaiso-leseling ho hlahlobisisa lintlha. Litema tse sebelisitsoeng li nkiloe ho sepheo sa lipatlisiso 'me li arotsoe hape ka mekhahlelo le likarolo tse ka tlase. Boithuto bo fumanoeng ho na le lintlha tse fapaneng tse amang ts'ebetso ea barutoana le maemo a thuto a fetoloang joaloka maemo a lelapa a baithuti, mathata a thuto, ho se be teng hantle ha sehlopha, tikoloho e mpe, ho haella ha menyetla ea nts'etsopele ea mosebetsi, ho hloka tataiso ea mosebetsi le khaello ea basebetsi ba SSS. Boithuto bo boetse bo fumane hore baithuti ha ba sebelise litšebeletso tsa tšehetso ea baithuti ka lebaka la tlhaiso-leseling e mabapi le yuniti ea SSS eo koleche e e hlokang. Ntle le mananeo a ts'ehetso ea thuto ea baithuti, baithuti ba ka nna ba se atlehe sekolong. Liphephetso tse fapaneng li sitisa ts'ebeliso e ntle ea lits'ebeletso tsa tšehetso ea borutehi ho kenyelletsa, ho haella ha basebetsi ba tšoanelehang, ho se sebetse, ho etelletsa pele merero ea tšehetso ea borutehi ke batsamaisi ba koleche le nako e lekanyelitsoeng ea ho fihlella. Ho na le tlhoko ea koleche ea ho theha likhokahano le bankakarolo ba bohlokoa joalo ka likoleche tsa TVET tse ling, Lefapha la Thuto ea Motheo ho ba le sethala sa ho arolelana leseli la bohlokoa ka tšehetso ea thuto. Mofuputsi ke mohopolo oa hore basebetsi ba tšoanelehang le ba ngolisitsoeng haholo ba lokela ho hiroa ho matlafatsa phepelo ea tšehetso ea thuto ho baithuti. Tsamaiso ea liteko tsa kamohelo ea baithuti e lokela ho ntlafatsoa, 'me liphetho tsa liteko li lokela ho fumaneha ho potoloha le nako. Tsamaiso ea koleche e lokela ho bonts'a boitlamo boiketlong ba baithuti ka ho etelletsa pele le ho amohela tšehetso ea thuto ea baithuti e le karolo ea bohlokoa katlehong ea thuto ea baithuti. / Les collèges d'enseignement et de formation techniques et professionnels (EFTP) en Afrique du Sud sont confrontés à plusieurs défis, dont un faible débit. Les faibles taux de production ont une forte incidence sur le succès du secteur de l'EFTP et sa capacité à répondre aux besoins du pays tels que les pénuries de compétences. Le but de l'étude était d'étudier les implications du soutien académique des étudiants NCV sur le taux de débit au la selection TVET collège. Un examen approfondi de la documentation a été effectué pour explorer la prestation de services de soutien scolaire et le taux de rendement des collèges. Une méthodologie de recherche qualitative a été utilisée pour permettre au chercheur d'explorer et d'obtenir de riches informations sur le taux de rendement des collèges et la fourniture d'un soutien académique. L'étude a utilisé un plan d'étude de cas. Les participants étaient des services de soutien aux étudiants et du personnel universitaire du collège la selection TVET. Une technique d'échantillonnage raisonné a été utilisée pour sélectionner les participants à cette étude. Des entretiens semi-structurés ont été enregistrés et transcrits. Une analyse thématique des données a été utilisée pour analyser les données. Les thèmes utilisés étaient dérivés des objectifs de la recherche et ceux-ci étaient ensuite divisés en catégories et sous-catégories. L'étude a révélé qu'il existe divers facteurs qui influent sur le rendement scolaire des élèves et le taux de rendement, tels que les antécédents familiaux des élèves, les difficultés scolaires, la faible fréquentation des classes, les mauvaises infrastructures, le manque de possibilités de développement professionnel, le manque d'orientation professionnelle, le manque de soutien scolaire. et la pénurie de personnel SSS. L'étude a également révélé que les étudiants n'utilisent pas les services de soutien aux étudiants en raison du manque d'informations sur l'unité SSS que le collège. Sans programmes de soutien scolaire appropriés, les étudiants ne réussiront probablement pas sur le plan scolaire. Divers défis entravent l'utilisation efficace des services de soutien scolaire, notamment le manque de personnel qualifié, le manque de personnel, la faible hiérarchisation des programmes de soutien scolaire par la direction du collège et le temps d'accès limité. Il est nécessaire que le collège établisse des liens avec les principales parties prenantes telles que les autres collèges de l'EFTP, le Département de l'éducation de base afin d'avoir une plateforme pour partager des informations vitales sur le soutien académique. Le chercheur est d'avis qu'un personnel plus qualifié et plus inscrit devrait être embauché pour renforcer la prestation d'un soutien scolaire aux étudiants. L’administration des tests d’admission des étudiants devrait être améliorée et les résultats des tests devraient être accessibles 24 heures sur 24. La direction du collège devrait montrer son engagement envers le bien-être des étudiants en priorisant et en reconnaissant le soutien scolaire des étudiants comme étant essentiel à la réussite scolaire des étudiants. / Educational Leadership and Management / M. Ed. (Education Management)