ABSTRACT The study aims at establishing whether Foundation Phase schooling provides a proper foundation for the promotion of scientific literacy. Natural Science in the Foundation Phase is understood as scientific knowledge, process skills, and values and attitudes, which together should foster scientific literacy. Influential perspectives on learning, and teaching methods appropriate to Natural Science education in the Foundation Phase, are reviewed, and the Natural Science Learning Area in the RNCS discussed in the context of global trends in curriculum development. Finally the findings of an empirical survey on the perceptions of Foundation Phase teachers with regard to Natural Science teaching and learning, are presented. Major findings include the following: (1) Scientific literacy is currently not a curriculum priority in the Foundation Phase, due mainly to meagre time allocation and lack of applicable Learning Outcomes. (2) Although teachers appear predominantly positive towards the Learning Area, significant shortcomings need to be addressed before Natural Science teaching in the Foundation Phase may claim to provide the required basis for promoting scientific literacy. OPSOMMING Die studie poog om vas te stel of Grondslagfase-onderrig `n geskikte basis lê vir die bevordering van wetenskaplike geletterdheid. Natuurwetenskappe in die Grondslagfase word beskou as `n kombinasie van wetenskaplike kennis, prosesvaardighede, en waardes en ingesteldhede, wat gesamentlik wetenskaplike geletterdheid ten doel het. Invloedryke perspektiewe op leer, en gepaste onderrigmetodes vir die effektiewe fasilitering van Natuurwetenskappe-onderrig in die Grondslagfase word onder die loep geneem voordat die Natuurwetenskappe-leerarea in die Hersiene Nasionale Kurrikulumverklaring bespreek word binne die konteks van wêreldwye neigings in kurrikulumontwikkeling. Laastens rapporterr die studie die bevindinge van `n empiriese ondersoek na die persepsies van Grondslagfase-onderwysers rakende Natuurwetenskaponderrig en -leer. Belangrike bevinding sluit in: (1) Die bevordering van wetenskaplike geletterdheid word nie as kurrikulumprioriteit in die Grondslagfase beskou word nie, soos blyk uit die karige toedeling van tyd en aantal leeruitkomste aan die Natuurwetenskappe-leerarea op hierdie vlak. (2) Alhoewel onderwysers se persepsies rakende Natuurwetenskaponderrig en -leer oorwegend positief blyk te wees, is daar ernstige tekortkominge wat aangespreek moet word voordat Natuurwetenskappe-onderrig in die Grondslagfase die vereiste grondslag sal kan lê vir die bevordering van wetenskaplike geletterdheid. / Educational Studies / M.Ed.

Text in both English and Afrikaans / Since the early 2000s, the tourism industry in South Africa has experienced phenomenal change and, concomitantly, the hospitality industry has also seen significant growth. This growth has been driven by factors such as the increased demand for hospitality in both the leisure and the business markets. The hotel industry has immensely been benefited. The Tourism Business Index’s report released quarterly by the Tourism Business Council of South Africa, indicating that the revenue received from each available room in the hotel sector increased significantly from 2009. Tourism research has revealed that, globally, the hospitality industry is among the largest employers of labour. The hospitality industry, especially the hotel sector, works hand in hand with tourism. Tourists traveling to a destination require accommodation which is generally provided by hotels. If the tourist is to have a good experience, it is vital that the tourist organisation and the hotel communicate so as to exchange information. Integrated marketing communication (IMC) has been described as a concept that many organisations adopt in order both to coordinate the operation of the organisation effectively and to increase the bottom line. In IMC, also creates synergy within an organisation and paves the way for consistent messages to be sent out to the organisation’s target audience. The aim of this study was to analyse the use of IMC by the View Boutique Hotel in Johannesburg, South Africa. To analyse the IMC at the hotel, in-depth interviews were conducted with both marketing staff and guests. In the aspect of planned messages, the outcome of the study revealed that the hotel uses marketing communication tools on a limited scale and, that to ensure message consistency the manager handles all external communication activities. However, the study also showed that ensuring message consistency should be the responsibility of everyone employed in the hotel. With regard to the product messages, the study showed that guests were negatively disposed towards the food, beverages, entertainment and recreation offered by the hotel. However, the service messages of the study indicated that the hotel’s service quality was good and that the staff were responsive to the needs of the guests. In respect of unplanned messages, the study showed that the hotel was receiving limited coverage from the media and that word of mouth communication was an effective tool in the hotel’s communication toolbox. On the whole, thus, it may be said that the study underscores the centrality of IMC as an instrument for creating and nurturing the relations between the hotel and its quests. It is anticipated that the outcome of this study should provide hotels such as the View Boutique Hotel with guidance in regard to utilising IMC to its full potential to make sure that there is message consistency and also to optimise communication impact. / Sedert die vroeë 2000's het die toerismebedryf in Suid-Afrika 'n merkwaardige verandering ondergaan, en daarmee saam het die gasvryheidsbedryf aansienlike groei getoon. Hierdie groei is aangevuur deur faktore soos die toenemende vraag na gasvryheid in die ontspannings- en sakemark. Die hotelbedryf het baie hierby gebaat. Volgens die besigheidsindeks vir toerisme wat kwartaalliks deur die Toerismebesigheidsraad van Suid-Afrika vrygestel word, het die inkomste uit elke beskikbare kamer in die hotelbedryf sedert 2009 aansienlik toegeneem. Navorsing oor toerisme het getoon dat die gasvryheidsbedryf wêreldwyd die meeste werk verskaf. Die gasvryheidsbedryf, en veral die hotelbedryf, gaan hand aan hand met toerisme. Toeriste wat na 'n bestemming reis het akkommodasie nodig wat oor die algemeen deur hotelle gebied word. Om te verseker dat toeriste positiewe belewenisse het, is dit kritiek dat toeriste-organisasies en hotelle kommunikeer om inligting uit te ruil. Geïntegreerde bemarkingskommunikasie word beskryf as 'n konsep wat baie organisasies aanneem om die bedryf van die organisasie effektief te koördineer en die netto wins te verhoog. Geïntegreerde bemarkingskommunikasie skep medewerking in 'n organisasie en baan die weg vir konsekwente boodskappe wat aan die organisasie se teikengehoor uitgedra word. Die doel van hierdie studie was om die gebruik van geïntegreerde bemarkingskommunikasie by die View Boutique Hotel in Johannesburg, Suid-Afrika, te ondersoek. In die ondersoek van die geïntegreerde bemarkingskommunikasie by die hotel is diepgaande onderhoude met bemarkingspersoneel en gaste gevoer. Ten opsigte van beplande kommunikasie het die studie bevind dat die hotel bemarkingskommunikasie-instrumente op beperkte skaal gebruik, en om te verseker dat die kommunikasie konsekwent is, hanteer die bestuurder alle eksterne kommunikasie-aktiwiteite. Die studie het egter ook getoon dat dit elke werknemer by die hotel se verantwoordelikheid is om konsekwente kommunikasie te verseker. Met verwysing na produkkommunikasie het die studie getoon dat die gaste negatief ingestel was oor die kos, drankies, vermaaklikheid en ontspanning wat by die hotel aangebied is. Die studie het egter bevind dat die diens by die hotel goed was en dat die personeel goed op die gaste se behoeftes gereageer het. Met betrekking tot ix onbeplande kommunikasie het die studie getoon dat die hotel beperkte dekking in die media geniet en dat mondelinge kommunikasie 'n doeltreffende instrument in die hotel se arsenaal is. Oor die algemeen kan daar gesê word dat die studie die sentraliteit van geïntegreerde bemarkingskommunikasie onderskryf as instrument vir die skep en uitbou van verhoudings tussen die hotel en sy gaste. Die resultate van hierdie studie behoort aan hotelle soos die View Boutique Hotel riglyne te bied oor hoe geïntegreerde bemarkingskommunikasie ten volle benut kan word om konsekwente kommunikasie te verseker, en om die impak van kommunikasie te optimeer. / Communication Science / M.A.(Psychology)

South Africa's transition to constitutional democracy marked the end of a system of government that perpetuated injustice on the basis of race. The previous system of government, underpinned by the principle of parliamentary supremacy, did not only exclude the majority of the population from public governance processes, it also economically exploited the majority of the population. As such, it laid the foundation for widespread poverty and inequalities in access to basic services. The Constitution of the Republic of South Africa, 1996 (the Constitution), is committed to correcting these past injustices and aims to establish a society based on social justice. This constitutional vision finds expression in the notion of transformative constitutionalism. Klare introduced the notion of transformative constitutionalism over a decade ago. For purpose of this thesis, the notion represents the socio-economic and political vision of post-apartheid South Africa to eradicate extreme poverty and inequalities in access to basic services as well as establish a democratic system of government that is inclusive, caring, participatory, representative and accountable. It captures the constitutional commitment to establish and maintain a society based on social justice by inter alia, eradicating poverty and inequalities in access to social services. The realisation of the socio-economic rights entrenched in the Bill of Rights of the Constitution (by all organs of state) is one of the ways in which to contribute towards meeting this transformative constitutional mandate, and by extension, striving towards the attainment of social justice. Although transformative constitutionalism and the achievement of a socially just society remain an ideal, the Constitution as the supreme law in the country, obligates the state, constitutive of public and private entities, to work towards its realisation, to the fullest extent possible. As part of post-apartheid institutional transformation, the Constitution established three spheres of government – national, provincial and local - which are distinct, interrelated and interdependent. All three spheres are obliged to operate in accordance with the principles of co-operative government and intergovernmental relations and are co-responsible for realising a number of constitutional objectives. Since 1996, the Constitution obliges local government (municipalities) to play an expanded "developmental" role. This has marked a move away from local government being regarded as merely a service delivery arm of government. xii The extended function of local government that came about with the constitutional dispensation finds expression in the notion of "developmental local government". This study is based on the premise that developmental local government must and can, together with the authorities in the other two spheres, contribute to transformative constitutionalism and social justice. Primarily, this study questions the extent to which the legal and policy framework on local government in South Africa enable local government (municipalities) to contribute towards realising the constitutional socio-economic rights underpinning the mandate of transformative constitutionalism. This study presents a review of relevant literature in order to establish links between the theoretical concepts underpinning this thesis. It examines the legal and policy framework on "developmental" local government in South Africa and analyses the central legal framework for the realisation of socio-economic rights at the local government level. In addition, the study explores the relevance and potential of local government indigent policies and Integrated Development Plans (IDPs) - as legally prescribed governance instruments - in contributing towards a more just society by examining their underlying legal and policy framework. It further distils from the theories and perspectives of social justice, benchmarks to guide local government towards achieving the transformative constitutional mandate aimed at social justice. Based on the legal, policy and other gaps identified, recommendations are made on how to optimise the potential of IDPs and municipal indigent policies in contributing towards achieving social justice. / PhD (Law), North-West University, Potchefstroom Campus, 2014

South Africa's transition to constitutional democracy marked the end of a system of government that perpetuated injustice on the basis of race. The previous system of government, underpinned by the principle of parliamentary supremacy, did not only exclude the majority of the population from public governance processes, it also economically exploited the majority of the population. As such, it laid the foundation for widespread poverty and inequalities in access to basic services. The Constitution of the Republic of South Africa, 1996 (the Constitution), is committed to correcting these past injustices and aims to establish a society based on social justice. This constitutional vision finds expression in the notion of transformative constitutionalism. Klare introduced the notion of transformative constitutionalism over a decade ago. For purpose of this thesis, the notion represents the socio-economic and political vision of post-apartheid South Africa to eradicate extreme poverty and inequalities in access to basic services as well as establish a democratic system of government that is inclusive, caring, participatory, representative and accountable. It captures the constitutional commitment to establish and maintain a society based on social justice by inter alia, eradicating poverty and inequalities in access to social services. The realisation of the socio-economic rights entrenched in the Bill of Rights of the Constitution (by all organs of state) is one of the ways in which to contribute towards meeting this transformative constitutional mandate, and by extension, striving towards the attainment of social justice. Although transformative constitutionalism and the achievement of a socially just society remain an ideal, the Constitution as the supreme law in the country, obligates the state, constitutive of public and private entities, to work towards its realisation, to the fullest extent possible. As part of post-apartheid institutional transformation, the Constitution established three spheres of government – national, provincial and local - which are distinct, interrelated and interdependent. All three spheres are obliged to operate in accordance with the principles of co-operative government and intergovernmental relations and are co-responsible for realising a number of constitutional objectives. Since 1996, the Constitution obliges local government (municipalities) to play an expanded "developmental" role. This has marked a move away from local government being regarded as merely a service delivery arm of government. xii The extended function of local government that came about with the constitutional dispensation finds expression in the notion of "developmental local government". This study is based on the premise that developmental local government must and can, together with the authorities in the other two spheres, contribute to transformative constitutionalism and social justice. Primarily, this study questions the extent to which the legal and policy framework on local government in South Africa enable local government (municipalities) to contribute towards realising the constitutional socio-economic rights underpinning the mandate of transformative constitutionalism. This study presents a review of relevant literature in order to establish links between the theoretical concepts underpinning this thesis. It examines the legal and policy framework on "developmental" local government in South Africa and analyses the central legal framework for the realisation of socio-economic rights at the local government level. In addition, the study explores the relevance and potential of local government indigent policies and Integrated Development Plans (IDPs) - as legally prescribed governance instruments - in contributing towards a more just society by examining their underlying legal and policy framework. It further distils from the theories and perspectives of social justice, benchmarks to guide local government towards achieving the transformative constitutional mandate aimed at social justice. Based on the legal, policy and other gaps identified, recommendations are made on how to optimise the potential of IDPs and municipal indigent policies in contributing towards achieving social justice. / PhD (Law), North-West University, Potchefstroom Campus, 2014

The South African coastal and marine environment is an essential ecologic and economic asset. Its associated services and products are substantially contributing to economic growth and sustainable development of the country. However, it is internationally and nationally recognised that land-based marine pollution (LBMP) is the most important single risk to the health and sustainability of coastal and marine waters and the associated ecosystems. The regulation of LBMP at the national level is still difficult and challenging. The issue of LBMP management has only recently been introduced in South Africa with the development of the National Programme of Action to Protect Marine Environment from Land-based Activities, 2008. South Africa is only starting to consider the question of LBMP regulation. This thesis aims to conduct a critical analysis of the South African regulatory framework pertaining to LBMP in comparison to international best practice and the French regulatory framework, in order to identify the key South African challenges in this regard and to make recommendations to address them. In order to do so, this research commences by providing an analysis of LBMP and the theoretical foundations associated with LBMP regulation, as promoted by international best practice. The study identifies and assesses the main regulatory features to be considered in the development, implementation and/or assessment of a regulatory framework pertaining to LBMP. These features will form the methodological framework to conduct the comparative legal assessment between the French and South African regulatory frameworks pertaining to LBMP. This thesis then provides a detailed and thorough legal analysis of the French and South African regulatory frameworks pertaining to LBMP using the methodological framework developed using guidance from international best practice. Finally, based on lessons learnt from the comparative legal study, this study concludes with a set of recommendations for the South African context. / Thesis (LL.D.)--North-West University, Potchefstroom Campus, 2011.

The South African coastal and marine environment is an essential ecologic and economic asset. Its associated services and products are substantially contributing to economic growth and sustainable development of the country. However, it is internationally and nationally recognised that land-based marine pollution (LBMP) is the most important single risk to the health and sustainability of coastal and marine waters and the associated ecosystems. The regulation of LBMP at the national level is still difficult and challenging. The issue of LBMP management has only recently been introduced in South Africa with the development of the National Programme of Action to Protect Marine Environment from Land-based Activities, 2008. South Africa is only starting to consider the question of LBMP regulation. This thesis aims to conduct a critical analysis of the South African regulatory framework pertaining to LBMP in comparison to international best practice and the French regulatory framework, in order to identify the key South African challenges in this regard and to make recommendations to address them. In order to do so, this research commences by providing an analysis of LBMP and the theoretical foundations associated with LBMP regulation, as promoted by international best practice. The study identifies and assesses the main regulatory features to be considered in the development, implementation and/or assessment of a regulatory framework pertaining to LBMP. These features will form the methodological framework to conduct the comparative legal assessment between the French and South African regulatory frameworks pertaining to LBMP. This thesis then provides a detailed and thorough legal analysis of the French and South African regulatory frameworks pertaining to LBMP using the methodological framework developed using guidance from international best practice. Finally, based on lessons learnt from the comparative legal study, this study concludes with a set of recommendations for the South African context. / Thesis (LL.D.)--North-West University, Potchefstroom Campus, 2011.

The researcher proposes working toward a more integrated approach of faith formation in the local church - where one's immediate family plays the central role and the congregation as the extended family functions as a support system. The church as family becomes a community where faith formation is continually nurtured as a lifelong process and by means of all the ministries of the church. The conscious furthering of faith formation should, therefore, not be confined to the ambit of the Sunday School. Its target group cannot be limited to children and adolescents, but should be be broadened to include the adult members, thus serving the totality of the congregation. The researcher proposes an approach where the different generations are not separated in the process of faith formation, but become an integrated learning community where all the different age groups and generations learn from each other and with each other. / Die navorser stel `n meer geïntegreerde benadering tot geloofsvorming binne die plaaslike gemeente voor - waar die gesin of familie die sentrale rol speel en die gemeente as geloofsfamilie as `n ondersteunende sisteem funksioneer. Die gemeente as familie word `n leergemeenskap waar geloofsvorming `n lewenslange proses is en plaasvind binne al die bedienings van die gemeente. Die navorser stel voor dat geloofsvorming nie net beperk moet word tot die tradisionele kategese of "Sondagskool" wat grootliks gerig is op kinders en adolessente nie, maar verbreed moet word om alle gelowiges van alle ouderdomme in te sluit en so die gemeente as geloofsfamilie te dien. Die navorser stel `n benadering voor waar die verskillende generasies nie van mekaar geskei word in die proses van geloofsvorming nie, maar `n geïntegreerde leergemeenskap vorm waar al die verskillende ouderdomsgroepe en generasies saam met mekaar, asook by mekaar kan leer. / Social work / M. Diac. (Youth Work)

ABSTRACT The study aims at establishing whether Foundation Phase schooling provides a proper foundation for the promotion of scientific literacy. Natural Science in the Foundation Phase is understood as scientific knowledge, process skills, and values and attitudes, which together should foster scientific literacy. Influential perspectives on learning, and teaching methods appropriate to Natural Science education in the Foundation Phase, are reviewed, and the Natural Science Learning Area in the RNCS discussed in the context of global trends in curriculum development. Finally the findings of an empirical survey on the perceptions of Foundation Phase teachers with regard to Natural Science teaching and learning, are presented. Major findings include the following: (1) Scientific literacy is currently not a curriculum priority in the Foundation Phase, due mainly to meagre time allocation and lack of applicable Learning Outcomes. (2) Although teachers appear predominantly positive towards the Learning Area, significant shortcomings need to be addressed before Natural Science teaching in the Foundation Phase may claim to provide the required basis for promoting scientific literacy. OPSOMMING Die studie poog om vas te stel of Grondslagfase-onderrig `n geskikte basis lê vir die bevordering van wetenskaplike geletterdheid. Natuurwetenskappe in die Grondslagfase word beskou as `n kombinasie van wetenskaplike kennis, prosesvaardighede, en waardes en ingesteldhede, wat gesamentlik wetenskaplike geletterdheid ten doel het. Invloedryke perspektiewe op leer, en gepaste onderrigmetodes vir die effektiewe fasilitering van Natuurwetenskappe-onderrig in die Grondslagfase word onder die loep geneem voordat die Natuurwetenskappe-leerarea in die Hersiene Nasionale Kurrikulumverklaring bespreek word binne die konteks van wêreldwye neigings in kurrikulumontwikkeling. Laastens rapporterr die studie die bevindinge van `n empiriese ondersoek na die persepsies van Grondslagfase-onderwysers rakende Natuurwetenskaponderrig en -leer. Belangrike bevinding sluit in: (1) Die bevordering van wetenskaplike geletterdheid word nie as kurrikulumprioriteit in die Grondslagfase beskou word nie, soos blyk uit die karige toedeling van tyd en aantal leeruitkomste aan die Natuurwetenskappe-leerarea op hierdie vlak. (2) Alhoewel onderwysers se persepsies rakende Natuurwetenskaponderrig en -leer oorwegend positief blyk te wees, is daar ernstige tekortkominge wat aangespreek moet word voordat Natuurwetenskappe-onderrig in die Grondslagfase die vereiste grondslag sal kan lê vir die bevordering van wetenskaplike geletterdheid. / Educational Studies / M.Ed.

On-chip impedance tuning is used to overcome IC perturbations caused by packaging stress. Tuning is more important for matching networks of radio frequency (RF) systems. Possible package resonance and fabrication process variations may cause instability, which is a major problem in RF systems. Thus, precautions need to be taken in order to maintain the overall stability of components and the final system itself. Electrically erasable programmable read-only memory switches (EEPROMs) occupy less die area compared to e-fuses and microelectromechanical system (MEMS) switches, thus EEPROMs are proposed to be used as tuning switches in millimetre-wave (mm-wave) applications. It is anticipated that EEPROM switches will also enable multi-time programming because of the smaller area and the fact that more switches can be used for fine-tuning. The problem addressed in this research is how suitable EEPROMs are for switching applications in the mm-wave region. The main focus of this dissertation is to characterise the suitability of EEPROM switches qualitatively for tuning with systems operating in the mm-wave spectrum. 130 nm SiGe BiCMOS IBM 8HP process technology was used for simulation and the fabricated prototypes. The Dickson charge pump (CP), two voltage doubler CPs and four floating gate (FG) devices were investigated. Literature and theoretical verification was done using computer aided design (CAD) Cadence software through circuit analysis and the layouts were also designed for integrated circuit (IC) prototype fabrication. The qualitative evaluation of the hypothesis was based on investigating reliability issues, switching characteristics, CP output drive capability and mm-wave characterisation. The maximum measured drain current for FGs was 1.4 mA, 2.7 mA and 3 mA for devices 2, 3 and 4, respectively. The ratio between ON state switching current (after tunnelling) and OFF state switching current (after injection) was 1.5, 1.35 and 6 for devices 2, 3 and 4, respectively. The ratios correlated with the expected results in terms of FG transistor area: a high area results in a higher ratio. Despite the correlation, devices 2 and 3 may be unsuitable because the ratio is less than 2: a smaller ratio between the ON and OFF states could also result in higher losses. The Dickson CP achieved an output voltage of 2.96 V from an input of 1.2 V compared to 3.08 V as computed from the theoretical analysis and 4.5 V from the simulation results. The prototypes of the voltage doubler CP did not perform as expected: a maximum of 1 V was achieved compared to 4.1 – 5 V as in the simulation results. The suitability of FG devices for switching applications depends on the ratio of the ON and OFF states (associated to insertion and isolation losses): the larger the FG transistor area, the higher the ratio. The reliability issues are dominated by the oxide thickness of the transistor, which contributes to charge leakages and charge trapping: smaller transistor length causes more uncertainties. Charge trapping in the oxide increases the probability of leakages and substrate conduction, thus introduces more losses. Based on the findings of this research work, the FG devices promise to be suitable for mm-wave switching applications and there is a need for further research investigation to characterise the devices in the mm-wave region fully. AFRIKAANS : Impedansie-instelling op skyf word gebruik om steurings in geïntegreerde stroombane wat deur verpakkingstres veroorsaak word, te oorkom. Instelling is meer belangrik om netwerke van radiofrekwensiesisteme te paar. Moontlike verpakkingresonansie en variasies in die vervaardigingsproses kan onstabiliteit veroorsaak, wat ‟n groot probleem is in radiofrekwensiesisteme. Voorsorg moet dus getref word om die oorhoofse stabiliteit van komponente en die finale sisteem self te handhaaf. Elektries uitveebare programmeerbare slegs-lees-geheueskakelaars (EEPROMs) neem minder matrysarea op as e-sekerings en die sekerings van mikro-elektromeganiese sisteme en word dus voorgestel vir gebruik as instellingskakelaars in millimetergolfaanwendings. Daar word verwag dat EEPROM-skakelaars ook multi-tydprogrammering sal moontlik maak as gevolg van die kleiner area en die feit dat meer skakelaars gebruik kan word vir fyn instellings. Die probleem wat in hierdie navorsing aandag geniet, is die geskiktheid van EEPROMS vir skakelaanwendings in die millimetergolfstreek. The hooffokus van die verhandeling is om die geskiktheid van EEPROM-skakelaars kwalitatief te karakteriseer vir instelling met sisteme wat in die millimetergolfspektrum funksioneer. Department of Electrical, Electronic and Computer Engineering v University of Pretoria 130 nm SiGe BiCMOS IBM 8HP-prosestegnologie is gebruik vir simulasie en die vervaardigde prototipes. Die Dickson-laaipomp is gebruik vir simulasie en die vervaardigde prototipes. Die Dickson-laaipomp, twee spanningverdubbelinglaaipompe en vier swewendehektoestelle is ondersoek. Literatuur- en teoretiese verifikasie is gedoen met behulp van rekenaarondersteunde-ontwerp (CAD) Cadence-sagteware deur stroombaananalise en die uitleg is ook ontwerp vir die vervaardiging van geïntegreerdestroombaanprototipes. Die kwalitatiewe evaluasie van die hipotese is gebaseer op die ondersoek van betroubaarheidkwessies, skakelingeienskappe, laaipompuitsetdryfvermoë en millimetergolfkarakterisering. Die maksimum gemete dreineerstroom vir swewende hekke was 1.4 mA, 2.7 mA en 3 mA vir onderskeidelik toestelle 2, 3 en 4. Die verhouding tussen die AAN-toestand van die skakelstroom (na tonnelling) en die AF-toestand van die skakelstroom (na inspuiting) was 1.5, 1.35 en 6 vir toestelle 2, 3 en 4, onderskeidelik. Die verhoudings het ooreengestem met die verwagte resultate rakende die swewendehek-transistorareas: ‟n groot area het ‟n hoër verhouding tot gevolg. Nieteenstaande die ooreenstemming, mag toestelle 2 en 3 moontlik nie geskik wees nie, omdat die verhouding kleiner as 2 is: ‟n kleiner verhouding tussen die AAN- en AF-toestande mag ook hoër verliese tot gevolg hê. Die Dickson-laaipomp het ‟n uitsetspanning van 2.96 V vanaf ‟n inset van 1.2 V vergeleke met 3.08 V soos bereken volgens die teoretiese analise en 4.5 V volgens die simulasieresultate. Die prototipes van die spanningverdubbelinglaaipomp het nie gefunksioneer soos verwag is nie: ‟n maksimum van 1 V is bereik vergeleke met 4.1 – 5 V soos in die simulasieresultate. Die geskiktheid van swewendehektoestelle vir skakelingtoepassings hang af van die verhouding van die AAN- en AF-toestande (wat met invoer-en isolasieverlies geassosieer word): hoe groter die swewendehektransistorarea, hoe hoër die verhouding. Die betroubaarheidkwessies word oorheers deur die oksieddikte van die transistor, wat bydra tot ladinglekkasies en ladingvasvangs: korter transistorlengte veroorsaak meer onsekerheid. Ladingvasvangs in die oksied verhoog die moontlikheid van lekkasies en substraatgeleiding en veroorsaak dus groter verlies. Die bevindings van hierdie navorsing toon dat swewendehektoestelle waarskynlik geskik is vir millimetergolfaanwendings en verdere navorsing is nodig om die toestelle volledig in die millimetergolfstreek te karakteriseer. Copyright / Dissertation (MEng)--University of Pretoria, 2013. / Electrical, Electronic and Computer Engineering / unrestricted

Text in English with abstracts in English, Afrikaans and isiZulu / Propelled by increased competition with the private sector and other similar organisations, the non-profit sector increasingly faces challenges to create meaningful interactions with stakeholders which, among other benefits, allow for differentiation and the creation of favourable and lasting impressions of the corporate brand. The main research aim of this study was to propose possible elements for a conceptual framework for the integration of non-profit organisations’ social media brand communication. The point of departure was that the achievement of a favourable corporate brand in the non-profit sector could, inter alia, be realised by following an integrated communication approach when utilising social media to communicate with stakeholders. The study is different from prior studies because of its specific interdisciplinary focus on the corporate brand, social media and integrated communication (IC), and the fact that it is merged into one study. The research into the main contribution of the study was based on a thorough literature review focusing on the following objectives: to explore corporate branding and social media; and to describe elements that could constitute an integrated approach to social media brand communication. During the investigation into the topic, the social media focus of the study was framed on the basis of classical theoretical views, and the theory of and perspectives on human action, symbolic interaction and social presence. The absence of a single set of theoretical assumptions of social media necessitated an inductive reasoning process based on identified key elements of social media. Subsequent to the literature review, the empirical research gathered invaluable insights from communication professionals in South African non-profit organisations, and who are responsible for communication by means of social media. Finally, and following the measurement of the proposed elements, the objective of proposing possible elements for the integration of social media brand communication and presenting it in a conceptual framework was achieved. The conceptual framework was based on three foundational principles, namely a corporate brand focus and a philosophy of communication integration, underpinned by social media. The proposed conceptual framework should provide new insights into and contribute to the existing body of knowledge on organisational communication. / Toenemende mededinging in die privaatsektor en tussen ander soortgelyke organisasies, rig ‘n grotewordende uitdaging aan die niewinsgerigte sektor om betekenisvolle wisselwerking met belangegroepe te bewerkstellig, iets wat dit onder andere moontlik maak om te differensieer en om gunstige en blywende indrukke van die korporatiewe handelsmerk te skep. Die belangrikste navorsingsoogmerk van hierdie studie was om moontlike elemente aan die hand te doen vir ʼn konsepsuele raamwerk vir die integrasie van niewinsgerigte organisasies se kommunikasie in sosiale media. Die vertrekpunt was dat ʼn gunstige korporatiewe handelsmerk in die niewinsgerigte sektor onder andere gerealiseer kan word deur middel van ʼn geïntegreerde kommunikasiebenadering wanneer sosiale media gebruik word om met belanghebbendes te kommunikeer. Die studie verskil van vorige studies weens die spesifieke interdissiplinêre fokus op die korporatiewe handelsmerk, sosiale media en geïntegreerde kommunikasie, asook die feit dat dit in een studie geïntegreer is. Die navorsing vir hierdie studie se belangrikste bydrae was gegrond op ʼn deurtastende literatuuroorsig, toegespits daarop om die gebruik van korporatiewe handelsmerke en sosiale media te verken; en om elemente wat ʼn geïntegreerde benadering tot handelsmerkkommunikasie in sosiale media sou kon daarstel, te beskryf. Gedurende die ondersoek na die tema het die studie se sosialemediafokus gerus op klassieke teoretiese sienings en die teorie van en perspektiewe op menslike aksie, simboliese wisselwerking en sosiale teenwoordigheid. Die gebrek aan ʼn enkele stel teoretiese aannames van sosiale media het ʼn proses van induktiewe redenering, gegrond op geïdentifiseerde sleutelelemente van sosiale media, genoodsaak. Voortspruitend uit die literatuuroorsig het die empiriese navorsing uiters waardevolle insigte bekom van kommunikasiekundiges in Suid-Afrikaanse niewinsgerigte organisasies wat deur middel van sosiale media moet kommunikeer. Laastens en na afloop van die meting van die voorgestelde elemente is die oogmerk om moontlike elemente vir die integrasie van kommunikasie van ʼn handelsmerk in sosiale media en die aanbieding daarvan in ʼn konsepsuele raamwerk, bereik. Die konsepsuele raamwerk is op drie beginsels gegrond, naamlik ʼn fokus op die korporatiewe handelsmerk en ʼn filosofie van kommunikasieintegrasie, ondersteun deur sosiale media. Die voorgestelde konsepsuele raamwerk behoort nuwe insigte in en bydraes tot die bestaande kenniskorpus oor organisasiekommunikasie te bied. / Ngokugqugquzelwa ukwanda kokuncitisana kwemikhakha ezimele nezinye izinhlangano ezifanayo, umkhakha ongenzi inzuzo uyaqhubeka njalo nokubhekana nezinselelo zokwenza ukuthi ukuxhumana kahle nabanye ababambe iqhaza okuwukuthi, phakathi kokunye okungazuzwa, kuvumele ukwahlukaniswa kanye nokwakhiwa kwezimpawu zemifanekiso yenkampani ezikahle futhi eziyohlala isikhathi eside. Injongo enkulu yocwaningo lwalesi sifundo kwakuwukuhlongoza imikhakha engaseyenzeke yohlaka olungakapheleli lokuhlanganiswa kophawu lokuxhumana ezinkundleni zokuxhumana zezinhlangano ezingenzi inzuzo. Iphuzu elalisemqoka kwakuwukufeza umgomo wokuthi kwakhiwe uphawu olufanele lwenkampani emkhakheni ongayenzi inzuzo, phakathi kwezinye izinto, ufezeke ngokulandela indlela edidiyelwe yezokuxhumana uma kusetshenziswa izinkundla zokuxhumana ukuxoxisana nababambe iqhaza. Lesi sifundo sihlukile kwezinye esezike zenziwa ngaphambilini ngenxa yokuthi sigxile ngokukhethekile ekusetshenzisweni kophawu lwenkampani, izinkundla zokuxhumana kanye nezindlela zokuxhumana ezididiyelwe, i-integrated communication (i-IC), kanye nephuzu lokuthi kudidiyelwe kwaba ucwaningo olulodwa. Lolu cwaningo kulokho okusemqoka okuwumthelela walesi sifundo lwalugxile kakhulu ekubuyekezweni okujulile kwemibhalo kubhekwe kakhulu kulezi zinjongo ezilandelayo: ukuhlaziya uphawu lwenkampani nezinkundla zokuxhumana; nokuchaza amaphuzu angase akhombise indlela edidiyelwe ekuxhumaneni ngophawu lwezinkundla zokuxhumana. Ngesikhathi kuphenywa ngesihloko, ukugxila ezinkundleni zokuxhumana kulesi sifundo kwabalulwa esizindeni semibono yezinto ezingaphatheki, kanye nethiyori nemiqondo yokwenza komuntu, ukuxhumana ngezimpawu nokubakhona kwabantu basemphakathini. Ukungabibikho kweqoqo elilodwa lokucatshangelwa ngokwenzeka emiqondweni ngokwezinkundla zokuxhumana kwenza ukuthi kube nesidingo senqubo yokuqala ukucabanga ezinze emaphuzwini asemqoka ezinkundla zokuxhumana. Ukulandela ukubuyekezwa kwemibhalo, lolu cwaningo oluphethe ubufakazi obuphathekayo luqoqe ulwazi olusemqoka oluvela kosolwazi bezokuxhumana ezinhlanganweni ezingenzi nzuzo zaseNingizimu Afrika, futhi ezinomsebenzi wokuxhumana ngokusebenzisa izinkundla zokuxhumana. Ekugcineni, futhi ngokulandela izilinganiso zamaphuzu ahlongozwayo, yafezeka injongo yokuhlongoza okungase kube amaphuzu okudidiyela ukuxhumana ngokusebenzisa uphawu lwezinkundla zokuxhumana kanye nokuluveza njengohlaka lokusemqondweni. Uhlaka lokusemqondweni lwalugxile emigomeni eyisisekelo emithathu, okuwukugxila kuphawu lwenkampani nenzululwazi yokudidiyelwa kokuxhumana, nokusekelwe yizinkundla zokuxhumana. Uhlaka olusahlongozwa olungakapheleli kumele luhlinzeke ngemiqondo emisha futhi lube nomthelela esakhiweni solwazi esikhona ekuxhumaneni ngokwenhlangano. / Communication Science / D. Litt. et Phil. (Communication)