The objective of this study was, firstly, to investigate the reliability of a measure of qualitative and quantitative job insecurity and, secondly, to determine the relationship between qualitative and quantitative job insecurity, job satisfaction, affective organisational commitment, turnover intention and locus of control. A cross–sectional survey design was used which included participants randomly selected from a retail banking group across junior, supervisory and middle management levels (n=178). The job insecurity scales of Hellgren, Sverke and Isaksson (1999); job satisfaction scale of Hellgren, Sjöberg and Sverke (1997); affective organisational commitment scale of Allen and Meyer (1990); turnover intention scale of Sjöberg and Sverke (2001) and the locus of control scale of Levenson (1981) were administered. Descriptive statistics were used in order to analyse the data. Structural equivalence was used for the comparison of the factor structures of the job insecurity scale for the three language groups. Furthermore, in order to determine the relationships between the variables, the Pearson product–moment correlation coefficients were used, while the dependent variable turnover intention was predicted by means of a regression analysis. As indicated at the outset, two research articles form the basis of this mini–dissertation: Based on the first article, results indicate that both the qualitative and quantitative scale presented satisfactory levels of reliability across different language groups, and a relationship between these dimensions (quantitative and qualitative) was noticeable. However, the item “I think my future prospects and opportunities within the organisation are good” included in the qualitative job insecurity scale could well be problematic, the deduction being that language barriers probably played a role in participants’ interpretation of the question. According to the second article, both qualitative and quantitative job insecurity positively related to turnover intentions. Furthermore, job satisfaction reported a negative relationship with turnover intention, and a negative relationship between qualitative job insecurity and job satisfaction came to the fore. Locus of control, on the other hand, had a direct bearing on qualitative job insecurity, while only job satisfaction and quantitative job insecurity directly predicted employees’ turnover intention in the banking sector. Finally, locus of control seemingly had no mediating effect when predicting turnover intention. Based on the afore–going, this mini–dissertation will conclude by offering deductions and making recommendations for further research as well as offering possible solutions to the commercial banking sector as far as the retention of staff is concerned. / Thesis (M.Com. (Human Resource Management))--North-West University, Potchefstroom Campus, 2012.

With parts of SA in a malaria endemic area, a preventative way of fighting malaria is with the use of pesticides such as 1,1,1–Trichloro–2,2–bis(pclorophenyl) ethane, also known as DDT. DDT is listed under the persistent organic pollutants (POPs) and considered an endocrine disruptive compound (EDC) under the Stockholm Convention. SA registered an exemption to use DDT as means to fight malaria. DDT and its isomers are, however, known EDCs. Combined with their ability to persist in the environment while not being target specific motivates further studies into possible detrimental effects. The present study aimed to establish if ED was present by comparing the male reproductive organs from snails from an area currently sprayed with DDT (for malaria control) to an area not sprayed with DDT in the Limpopo Province. A possible endpoint (the penis sheath/preputium length ratio or PSPLR) was identified for the freshwater snail Bulinus tropicus. B. tropicus and sediment samples were collected from DDT–sprayed and nonsprayed areas located close together. The snails were dissected and various morphometric parameters measured. Sediments from the sites where the snails were collected were analysed for DDT using GC–MS. Statistical analysis showed significant differences in PSPLR (and therefore possible ED) between snails from the two areas. The difference in PSPLR values was mainly due to a relatively shorter preputium for the snails from the DDT–sprayed area. Even though the sediment samples showed that DDT was present in most of the DDT–sprayed sites and not in the non–DDT sprayed sites, causality of the possible ED could not be established from this field study. This study indicated the possibility of using the PSPLR as endpoint for ED. Recommendations are made for further development of the PSPLR and B. tropicus as biological indicators for endocrine disruption, but causality must first be established. / Thesis (M.Sc (Environmental Science))--North-West University, Potchefstroom Campus, 2011.

The objective of this study was, firstly, to investigate the reliability of a measure of qualitative and quantitative job insecurity and, secondly, to determine the relationship between qualitative and quantitative job insecurity, job satisfaction, affective organisational commitment, turnover intention and locus of control. A cross–sectional survey design was used which included participants randomly selected from a retail banking group across junior, supervisory and middle management levels (n=178). The job insecurity scales of Hellgren, Sverke and Isaksson (1999); job satisfaction scale of Hellgren, Sjöberg and Sverke (1997); affective organisational commitment scale of Allen and Meyer (1990); turnover intention scale of Sjöberg and Sverke (2001) and the locus of control scale of Levenson (1981) were administered. Descriptive statistics were used in order to analyse the data. Structural equivalence was used for the comparison of the factor structures of the job insecurity scale for the three language groups. Furthermore, in order to determine the relationships between the variables, the Pearson product–moment correlation coefficients were used, while the dependent variable turnover intention was predicted by means of a regression analysis. As indicated at the outset, two research articles form the basis of this mini–dissertation: Based on the first article, results indicate that both the qualitative and quantitative scale presented satisfactory levels of reliability across different language groups, and a relationship between these dimensions (quantitative and qualitative) was noticeable. However, the item “I think my future prospects and opportunities within the organisation are good” included in the qualitative job insecurity scale could well be problematic, the deduction being that language barriers probably played a role in participants’ interpretation of the question. According to the second article, both qualitative and quantitative job insecurity positively related to turnover intentions. Furthermore, job satisfaction reported a negative relationship with turnover intention, and a negative relationship between qualitative job insecurity and job satisfaction came to the fore. Locus of control, on the other hand, had a direct bearing on qualitative job insecurity, while only job satisfaction and quantitative job insecurity directly predicted employees’ turnover intention in the banking sector. Finally, locus of control seemingly had no mediating effect when predicting turnover intention. Based on the afore–going, this mini–dissertation will conclude by offering deductions and making recommendations for further research as well as offering possible solutions to the commercial banking sector as far as the retention of staff is concerned. / Thesis (M.Com. (Human Resource Management))--North-West University, Potchefstroom Campus, 2012.

The primary aim of this research was to determine whether there is a relation between locus of control, transformational leadership and management success. One hundred and one shift overseers completed selfevaluation questionnaires on locus of control and transformational leadership. Thereafter, in turn, the managers completed evaluation questionnaires on the work performance of the shift overseers. The Pearson correlation coefficient showed statistically significant interrelations between internal locus of control, autonomy and transformational leadership. The three scales of management success also showed a strong positive correlation. Canonical correlations indicated that only one variant could be interpreted and that high internal control and high autonomy are associated with high transformational leadership and laissez faire leadership style. According to the literature overview, a positive relation exists between internal locus of control, transformational leadership and management success as well as organisational performance. An attempt is made to account for these diverse findings in terms of the relevance of a performance model within an organisational context. / Die primere doel van hierdie navorsingstudie was om te bepaalof daar 'n verband is tussen lokus van beheer, transformasionele leierskap en bestuursukses. Eenhonderd en een skoftoesighouers het selfbeoordelings-vraelyste oor lokus van beheer en transformasionele leierskap voltooi. Daarna het die bestuurders beoordelingsvraelyste oor die skoftoesighouers se werksprestasie voltooi. Die Pearson korrelasietoets het getoon dat daar statisties beduidende verbande is tussen interne lokus van beheer, outonomie en transformasionele leierskap. Die drie skate van bestuursukses het onderling sterk positief gekorrelleer. Kanoniese korrelasies het aangedui dat slegs een variaat interpreteer kan word en dat hoe interne beheer en hoe outonomie geassosieer is met hoe transformasionele leierskap en lae laissez faire-leierskapstyl. Die literatuurstudie het getoon dat daar 'n positiewe verband is tussen interne lokus van beheer, transformasionele leierskap en bestuursukses asook organisasie-prestasie. Verklarings vir hierdie teenstellende bevindings word gegee aan die hand van die relevansie van 'n prestasiemodel binne 'n organisasiekonteks. / Industrial and Organisational Psychology / M.A. (Industrial and Organisational Psychology)

The number of students that apply for studies at South African universities has increased dramatically over the past years, but the resources of the universities have stayed the same. It is therefore imperative that academic performance can be predicted on a short- and long-term basis. The Developing Expertise model might be able to predict academic performance on a short- and long-term basis. This study focussed primarily on academic performance on short-term basis by focussing on three of the model’s elements. The three elements that were investigated were: metacognition, intrinsic motivation and critical thinking. One of the contributions of this study is the refinement of some of the elements of the expertise model. The study helped to determine the validity of the instrument in a South African context. The measurement instrument can also be used as a selection meganism on short-term basis. In order to measure each of the elements of the expertise model, a measuring tool consisting of five questionnaires was compiled. A convenience sample of first year psychology students provided 326 students for the study. A second sample, compiled from the original sample, consisting of 209 first year students was used for the multiple regression analyses. These students are registered for psychology for the first time in 2005. The students were placed in three groups according to the student’s means of registering for the CBT centre. The first group was those students who completed the instrument on computers. The second group consisted of those students who completed a paper and pencil version of the measurement. The third group consisted of the Mamelodi students. These students completed a paper and pencil version of the measurement and brought it back a week later. The statistical analysis included factor analysis, correlation analysis and multiple regression analysis. Based on the literature research and the results of the statistical analysis, the expertise model was expanded to include metamemory as the functional unit for metacognition. Motivation can be divided in three subcomponents, namely: self-efficacy, intrinsic value and test anxiety. The motivational component, knowledge of cognition and external control can be used as predictors of academic performance on a short-term basis. The findings of this study can only be used as a selection meganism of academic performance on a short-term basis and therefore the results must be used with caution. / Dissertation (MA (Psychology))--University of Pretoria, 2007. / Psychology / unrestricted

This dissertation presents a pumping system operation efficiency improvement solution that includes optimal selection and control of the water pump. This solution is formulated based on the performance, operation, equipment and technology (POET) framework. The focus is on the minimization of the operational energy cost. This efficiency improvement solution is divided into three stages in accordance with the operation category of the POET framework. The first stage is to select the optimal pump capacity by considering both energy efficiency and load shifting requirements. The second stage is to develop a flexible pump controlling strategy that combines and balances the contributions from energy efficiency and load shifting. The last stage is to improve the robustness of the control system using the closed-loop model predictive control approach. An optimal pump capacity selection model is formulated. In this model, additional capacity requirements for load shifting are considered along with the traditional energy efficiency requirements. By balancing the contributions from load shifting and energy efficiency, the operational energy cost can be reduced by up to 37%. An optimal pump control is formulated. The objective of this control model is to balance the energy efficiency and load shifting contributions during the operation and minimize the operational energy cost. This control model is tested under different operational conditions and it is compared to other existing control strategies. The simulation and comparison results show that the proposed control strategy achieves the lowest operational energy cost in comparison to other strategies. This optimal pump control model is further modified into the closed-loop model predictive control format to increase the robustness of the control system under operation uncertainties. A mixed integer particle swarm optimization algorithms is employed to solve the optimization problems in this research. AFRIKAANS : Hierdie verhandeling bied ’n verbeterde oplossing vir die operasionele doeltreffendheid van pompstelsels wat die optimale keuse en beheer van die waterpomp insluit. Hierdie oplossing is geformuleer op ’n raamwerk wat werkverrigting, bedryf, toerusting en tegnologie in ag neem. Die oplossing fokus op die vermindering van bedryfsenergie koste. Hierdie oplossing is onderverdeel in drie fases soos bepaal deur die bedryfskategorie gegrond op die bogenoemde raamwerk: Die eerste fase is die keuse van die optimale pompkapasiteit deur beide energiedoeltreffendheid en lasverskuiwing in ag te neem. Die tweede fase is om ’n buigbare pompbeheer strategie te ontwikkel wat ’n goeie balans handhaaf tussen die onderskeie bydraes van energiedoeltreffendheid en lasverskuiwing. Die derde fase is om die stabiliteit van die beheerstelsel te verbeter deur gebruik te maak van ’n geslote-lus beheermodel met voorspellende beheer (Predictive Control). ’n Model vir die keuse van optimale pompkapasiteit is geformuleer. In hierdie model word vereistes vir addisionele pompkapasiteit vir lasverskuiwing sowel as vereistes in terme tradisionele energiedoeltreffendheid in ag geneem. Deur die regte verhouding tussen die onderskeie bydraes van energiedoeltreffendheid en lasverskuiwing te vind kan ’n besparing van tot 37% op die energiekoste verkry word. Optimale pompbeheer is geformuleer. Die doel van die beheermodel is om die bydraes van energiedoeltreffendheid en lasverskuiwing te balanseer en om die bedryfsenergie koste te minimiseer. Hierdie beheermodel is getoets onder verskillende bedryfstoestande en dit is vergelyk met ander bestaande beheerstrategiee. Die simulasie en vergelyking van resultate toon dat die voorgestelde beheerstrategie die laagste bedryfsenergie koste behaal in vergelyking met ander strategiee. Hierdie optimale pomp beheermodel is verder aangepas in ’n geslote beheermodel met voorspellende beheerformaat om die stabiliteit van die beheerstelsel te verbeter onder onsekere bedryfstoestande. ’n Gemende heelgetal partikel swerm optimisasie (Mixed interger particle swarm optimization) algoritme is gebruik om die optimiseringsprobleme op te los tydens hierdie navorsingsoefening. / Dissertation (MEng)--University of Pretoria, 2011. / Electrical, Electronic and Computer Engineering / Unrestricted

The automation of the tramming or load, haul and dump (LHD) procedure, performed by a LHD vehicle, holds the potential to improve productivity, efficiency and safety in the mining environment. Productivity is mainly increased by longer working hours; efficiency is improved by repetitive, faultless and predictable work; and safety is improved by removing the human operator from the harsh environment. However, before the automation of the process can be addressed, a thorough understanding of the process and its duty in the overall mining method is required. Therefore, the current applicable mining methods and their areas of potential automation are given. Since the automation of the LHD vehicle is at the core of this project, its implementation in the tramming process is also justified. Also, the current underground navigation methods are given and their shortcomings are named. It is concluded that infrastructure-free navigation is the only viable solution in the ever-changing mining environment. With that in mind, the feasibility of various navigation sensors is discussed and conclusions are drawn. Both kinematic and dynamic modelling of LHD vehicles are introduced. Various forms of kinematic models are given and their underlying modelling assumptions are named. The most prominent assumptions concern the vehicle’s half-length and the inclusion of a wheel-slip factor. Dynamic modelling techniques, with a strong emphasis on tyre modelling, are also stated. In order to evaluate the modelling techniques, field tests are performed on the articulated vehicles, namely the Wright 365 LHD and the Bell 1706C loader. The test on the Wright 365 LHD gives a good impression of the harsh ergonomics under which the operator has to work. A more thorough test is performed on the Bell 1706C articulated loader. The test results are then compared to simulation results obtained from the kinematic models. Also, the above-named assumptions are tested, evaluated and discussed. A dynamic model is also simulated and discussed. Lastly, two localization and control methods are given and evaluated. The first method is an open-loop nonlinear optimal control strategy with periodic position resetting and the second method is a pathtracking controller. AFRIKAANS : Automatisering van die laai-, vervoer- en dompel- (LVD) prosedure het die potensiaal om die produktiwiteit, effektiwiteit en veiligheid van die mynbedryf te verbeter. Produktiwiteit word hoofsaaklik deur langer werksure verhoog, effektiwiteit word deur herhalende, foutlose en voorspelbare werk verbeter en veiligheid word verbeter omdat menslike operateurs uit die gevaarlike ondergrondse omgewing verwyder word. Voordat aandag aan die automatisering van die prosedure geskenk kan word, moet die prosedure en die algemene mynbedrywighede rakende die prosedure deeglik bestudeer en verstaan word. As gevolg hiervan word die huidige, toepaslike mynboumetodes hier gedokumenteer. Die implementering van ʼn gekoppelde LVD-voertuig in die LVD-prosesword ook geregverdig. Verder word die huidige metodes van ondergrondse navigasie genoem en hulle tekortkominge aangedui. Die gevolgtrekking dat infrastruktuur-vrye navigasie die enigste lewensvatbare navigasiemetode in die immer veranderende ondergrondsemynbouomgewing is, word ook gemaak. In die lig daarvan word ʼn verskeidenheid sensors genoem en bespreek. Kinematiese en dinamiese modellering van ʼn LVD-voertuig word bekendgestel. Verskeie kinematiese modelle en hulle onderliggende aannames word genoem. Die mees prominente aannames is die lengte van die gekoppelde voertuig se hoofdele en die insluiting van ʼn wielglipfaktor. Die tegnieke van dinamiese modellering, met die klem op bandmodellering, word ook gegee. Praktyktoetse op gekoppelde voertuie is ook gedoen om die verskillende modelle te evalueer. Die toets op die Wright 365-LVD bied goeie insig in die strawwe ergonomiese toestande waaronder die operateurs moet werk. ʼn Deeglike toets is op ʼn BELL 1706C- gekoppelde laaier, wat kinematies identies aan ʼn LVD-voertuig is, uitgevoer. Die bevindinge van die toets word met bogenoemde modelsimulasies vergelyk en gevolgtrekkings word gemaak. Laastens word lokalisiering en beheer van ʼn LVDvoertuig behandel. Twee beheermetodes, opelus- nie-lineêre optimale beheer met periodieke herstel en padvolgingbeheer word geëvalueer en bespreek. Copyright / Dissertation (MEng)--University of Pretoria, 2012. / Electrical, Electronic and Computer Engineering / unrestricted

A wireless sensor network is a distributed network system consisting of miniature spatially distributed autonomous devices designed for using sensors to sense the environment and cooperatively perform a specific goal. Each sensor node contains a limited power source, a sensor and a radio through which it can communicate with other sensor nodes within its communication radius. Since these sensor nodes may be deployed in inaccessible terrains, it might not be possible to replace their power sources. The radio transceiver is the hardware component that uses the most power in a sensor node and the optimisation of this element is necessary to reduce the overall energy consumption. In the data link layer there are several major sources of energy waste which should be minimised to achieve greater energy efficiency: idle listening, overhearing, over-emitting, network signalling overhead, and collisions. Sleep scheduling utilises the low-power sleep state of a transceiver and aims to reduce energy wastage caused by idle listening. Idle listening occurs when the radio is on, even though there is no data to transmit or receive. Collisions are reduced by using medium reservation and carrier sensing; collisions occur when there are simultaneous transmissions from several nodes that are within the interference range of the receiver node. The medium reservation packets include a network allocation vector field which is used for virtual carrier sensing which reduces overhearing. Overhearing occurs when a node receives and decodes packets that are not destined to it. Proper scheduling can avoid energy wastage due to over-emitting; over-emitting occurs when a transmitter node transmits a packet while the receiver node is not ready to receive packets. A protocol stack is proposed that achieves an ultra-low duty cycle sleep schedule. The protocol stack is aimed at large nodal populations, densely deployed, with periodic sampling applications. It uses the IEEE 802.15.4 Physical Layer (PHY) standard in the 2.4 GHz frequency band. A novel hybrid data-link/network cross-layer solution is proposed using the following features: a global sleep schedule, geographical data gathering tree, Time Division Multiple Access (TDMA) slotted architecture, Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA), Clear Channel Assessment (CCA) with a randomised contention window, adaptive listening using a conservative timeout activation mechanism, virtual carrier sensing, clock drift compensation, and error control. AFRIKAANS : 'n Draadlose sensor-netwerk is 'n verspreide netwerk stelsel wat bestaan uit miniatuur ruimtelik verspreide outonome toestelle wat ontwerp is om in harmonie saam die omgewing te meet. Elke sensor nodus besit 'n beperkte bron van energie, 'n sensor en 'n radio waardeur dit met ander sensor nodusse binne hulle kommunikasie radius kan kommunikeer. Aangesien hierdie sensor nodusse in ontoeganklike terreine kan ontplooi word, is dit nie moontlik om hulle kragbronne te vervang nie. Die radio is die hardeware komponent wat van die meeste krag gebruik in 'n sensor nodus en die optimalisering van hierdie element is noodsaaklik vir die verminder die totale energieverbruik. In die data-koppelvlak laag is daar verskeie bronne van energie vermorsing wat minimaliseer moet word: ydele luister, a uistering, oor-uitstraling, oorhoofse netwerk seine, en botsings. Slaap-skedulering maak gebruik van die lae-krag slaap toestand van 'n radio met die doel om energie vermorsing wat veroorsaak word deur ydele luister, te verminder. Ydele luister vind plaas wanneer die radio aan is selfs al is daar geen data om te stuur of ontvang nie. Botsings word verminder deur medium bespreking en draer deteksie; botsings vind plaas wanneer verskeie nodusse gelyktydig data stuur. Die medium bespreking pakkies sluit 'n netwerk aanwysing vektor veld in wat gebruik word vir virtuele draer deteksie om a uistering te verminder. Afluistering vind plaas wanneer 'n nodus 'n pakkie ontvang en dekodeer maar dit was vir 'n ander nodus bedoel. Behoorlike skedulering kan energie verkwisting as gevolg van oor-uistraling verminder; oor-uistraling gebeur wanneer 'n sender nodus 'n pakkie stuur terwyl die ontvang nog nie gereed is nie. 'n Protokol stapel is voorgestel wat 'n ultra-lae slaap-skedule dienssiklus het. Die protokol is gemik op draadlose sensor-netwerke wat dig ontplooi, groot hoeveelhede nodusse bevat, en met periodiese toetsing toepassings. Dit maak gebruik van die IEEE 802.15.4 Fisiese-Laag standaard in die 2.4 GHz frekwensie band. 'n Nuwe baster datakoppelvlak/netwerk laag oplossing is voorgestel met die volgende kenmerke: globale slaap-skedulering, geogra ese data rapportering, Tyd-Verdeling-Veelvuldige-Toegang (TVVT) gegleufde argitektuur, Draer-Deteksie-Veelvuldige-Toegang met Botsing-Vermyding (DDVT/BV), Skoon-Kanaal-Assessering (SKA) met 'n wisselvallige twis-tydperk, aanpasbare slaap-skedulering met 'n konserwatiewe aktiverings meganisme, virtuele draer-deteksie, klok-wegdrywing kompensasie, en fout beheer. Copyright / Dissertation (MEng)--University of Pretoria, 2012. / Electrical, Electronic and Computer Engineering / unrestricted

An algorithm that is capable of estimating the parameters of non-stationary sinusoids in real-time lends application to various branches of engineering. Non-stationary sinusoids are sinusoidal signals with time-varying parameters. In this dissertation, a nonlinear filter is applied to power system applications to test its performance. The filter has a structure which renders it fully adaptive to tracking time variations in the parameters of the targeted sinusoid, including its phase and frequency. Mathematical properties of the differential equations which govern the proposed filter are presented. The performance of the proposed filter in the field of power systems is demonstrated with the aid of computer simulations and practical experimentations. The filter is applied to synchronous generator excitation control, voltage dip mitigation as well as the real-time estimation of symmetrical components. The parameter settings of the filter are tested and optimized for each of the applications. This dissertation demonstrates the simulation and experimental results of the filter when applied to the various power system applications. AFRIKAANS : 'n Filter wat bevoeglik is met die beraming van die parameters van beweeglike sinusoïdale in ware-tyd, kan bruikbaar aangewend word in verskeie takke van ingenieurswese. Beweeglike sinuskrommes is sinusoïdale seine met tyd-wisselende parameters. In hierdie verhandeling word `n nie-liniêre filter aangewend in verskeie kragstelseltoepassings om die werksverrigting van die filter te toets. Die filter het 'n struktuur wat dit toelaat om wisselende tydvariasies in die parameters van die teikensinusoïdaal op te spoor, insluitende die fase en frekwensie. Wiskundige eienskappe van die differensiaalvergelykings wat die voorgestelde filter beheer is ondersoek. Die werksverrigting van die voorgestelde filter in die veld van kragstelsels is gedemonstreer met die hulp van rekenaarsimulasies asook praktiese eksperimente. Die filter is toegepas tot opgewekte, sinkrone eksitasie-beheer, spanningsverlaging versagting, asook die ware tyd estimasie van simmetriese komponente. Die parameter verstellings van die filter is getoets en geoptimeer vir elk van die toepassings. Hierdie verhandeling demonstreer die simulering en eksperimentele resultate van die filter wat aangewend is vir verskeie kragstelseltoepassings. Copyright / Dissertation (MSc)--University of Pretoria, 2010. / Electrical, Electronic and Computer Engineering / unrestricted

The aim of the study was to examine and describe how divorced biological fathers in reconstituted families give form to the educational relationship with their non-resident young children, to achieve an understanding of fathers’ perceptions of their parental roles as well as the functionality of the relationship in practice. A multiple case study using semi-structured interviews was conducted. A meta-analysis of the emergent themes indicated that the field within which understanding of the phenomenon should be constructed, ranges beyond the context of the fathers reconstituted families who participated in the study. The literature review confirmed that the relationship between former marriage partners plays an important part in fathers’ ongoing relationship with their non-resident child/ren. Findings: • The interaction in the mesosystem between the primary and secondary micro family systems of the two parents with and without custody influences the way in which the biological fathers endeavour to establish/maintain a relationship with their non-resident child/ren. Within this unique mesosystem various obstacles and potential traps exist that could prevent fathers from giving form to their educational relationship with their non-resident child/ren. • By identifying and mobilising assets and strengths the focus could shift from fathers’ feelings of frustration and powerlessness to feelings of empowerment and self-determination that could promote optimal relations. / Dissertation (MEd (Educational Psychology))--University of Pretoria, 2006. / Educational Psychology / MEd / unrestricted