In the past few decades, the investigation of grammatical change using electronic corpora has made headway internationally. Although linguists previously believed that grammatical changes progress too slowly to observe, this method enables linguists to investigate even recent, or ongoing, changes. However, no comprehensive study of recent and ongoing grammatical changes in Afrikaans has appeared yet. Also, when comments about ongoing changes are made, it is usually based on anecdotal evidence, with a focus on English influence. In this study, the method of short-term diachronic comparable corpus linguistics is used to investigate grammatical changes in written Standard Afrikaans from 1911 to 2010. Four corpora were collected to this end, representing language use from 1911-1920, 1941-1950, 1971-1980 and 2001-2010. Additionally, quantitative grammaticography is used to take into account possible effects of prescriptive sources. Two research questions are adressed in this study: the first inquires into the nature and extent of grammatical changes in selected grammatical categories in written Standard Afrikaans from 1911 to 2010; the second wants to clarify the differences and similarities between internal and external language change, and in the light thereof establish to which extent external change, and specifically English influence, is relevant for grammatical changes in Standard Afrikaans during the past century. The theoretical framework within which language use and change is investigated in this study is cognitive linguistics, specifically emergent grammar and the exemplar model. Changes that become apparent from the data are described and explained in terms of processes of change and forces of change, and linked to the principles of cognitive linguistics. Three broad grammatical categories are investigated: temporal reference, pronouns and the genitive. Even though there is an extent of stability in each of the categories, there are also several bigger and smaller changes that give an overview of the nature of grammatical change in written Standard Afrikaans in the past century. These changes can be divided into different categories. The first type of change has to do with formalisation and colloquialisation – in broad strokes, there are signs of formalisation between the first two periods, during which the standard variety was being established, causing some features associated with formality to increase (e.g. passive constructions). However, at the end of the century there are signs of colloquialisation between the last two periods, where some formal features decrease (e.g. the formal second person pronoun u "you"), and some informal features increase (e.g. nou "now" as discourse marker). The second type of change is analogy, causing greater regularity and/or uniformity in a paradigm. For instance, obsolescent preterite forms (had "had", wis "knew") were replaced by regular forms (het/het gehad, het geweet). The last of the Dutch genitive was also replaced by the Afrikaans genitive with se "'s" and van "of". The third type of change is driven by speakers' desire to be expressive. Some of the pronouns specialise increasingly, meaning that they are used less and less for functions other than their main function, and other options are used less and less for that function. Examples of this is the third person pronoun dit "it", the shortened forms jul "you/your" and hul "they/their", and the indefinite pronouns almal "everybody", alles "everything" and elkeen "each one". A next type of change is actually a combination of different processes and forces: grammaticalisation. There are several instances of grammaticalisation: the use of gaan "go" for future reference, the use of dis "it's" rather than dit is "it is", the use of mens "human" rather than 'n mens "a human" as generic pronoun, the use of indefinite pronouns with enig- "any" like enigiets "anything", enigiemand "anybody", enigeen "anyone", and the use of the genitive particle se "'s". The last type of change is externally motivated change. Contrary to the view the Afrikaans literature in general promotes, there is only one instance of confirmed English influence in the data of this study: the increasing use of -self with reflexive pronouns, rather than the bare object form. However, there are instances of extra-linguistic influence, like standardisation that caused large scale variation reduction between the first and the second period, and the influence of feminism that can be seen in decreasing linguistic sexism, particularly with regard to generic pronouns. The conclusion in the end is that the process of internally motivated change and contact-induced change is not different – an innovation can originate from another language (overt transfer), or an internal innovation can be promoted through bi- or multilingualism (covert transfer); however, the same principles, processes and forces of change are at play, irrespective of how many languages are involved.

In the past few decades, the investigation of grammatical change using electronic corpora has made headway internationally. Although linguists previously believed that grammatical changes progress too slowly to observe, this method enables linguists to investigate even recent, or ongoing, changes. However, no comprehensive study of recent and ongoing grammatical changes in Afrikaans has appeared yet. Also, when comments about ongoing changes are made, it is usually based on anecdotal evidence, with a focus on English influence. In this study, the method of short-term diachronic comparable corpus linguistics is used to investigate grammatical changes in written Standard Afrikaans from 1911 to 2010. Four corpora were collected to this end, representing language use from 1911-1920, 1941-1950, 1971-1980 and 2001-2010. Additionally, quantitative grammaticography is used to take into account possible effects of prescriptive sources. Two research questions are adressed in this study: the first inquires into the nature and extent of grammatical changes in selected grammatical categories in written Standard Afrikaans from 1911 to 2010; the second wants to clarify the differences and similarities between internal and external language change, and in the light thereof establish to which extent external change, and specifically English influence, is relevant for grammatical changes in Standard Afrikaans during the past century. The theoretical framework within which language use and change is investigated in this study is cognitive linguistics, specifically emergent grammar and the exemplar model. Changes that become apparent from the data are described and explained in terms of processes of change and forces of change, and linked to the principles of cognitive linguistics. Three broad grammatical categories are investigated: temporal reference, pronouns and the genitive. Even though there is an extent of stability in each of the categories, there are also several bigger and smaller changes that give an overview of the nature of grammatical change in written Standard Afrikaans in the past century. These changes can be divided into different categories. The first type of change has to do with formalisation and colloquialisation – in broad strokes, there are signs of formalisation between the first two periods, during which the standard variety was being established, causing some features associated with formality to increase (e.g. passive constructions). However, at the end of the century there are signs of colloquialisation between the last two periods, where some formal features decrease (e.g. the formal second person pronoun u "you"), and some informal features increase (e.g. nou "now" as discourse marker). The second type of change is analogy, causing greater regularity and/or uniformity in a paradigm. For instance, obsolescent preterite forms (had "had", wis "knew") were replaced by regular forms (het/het gehad, het geweet). The last of the Dutch genitive was also replaced by the Afrikaans genitive with se "'s" and van "of". The third type of change is driven by speakers' desire to be expressive. Some of the pronouns specialise increasingly, meaning that they are used less and less for functions other than their main function, and other options are used less and less for that function. Examples of this is the third person pronoun dit "it", the shortened forms jul "you/your" and hul "they/their", and the indefinite pronouns almal "everybody", alles "everything" and elkeen "each one". A next type of change is actually a combination of different processes and forces: grammaticalisation. There are several instances of grammaticalisation: the use of gaan "go" for future reference, the use of dis "it's" rather than dit is "it is", the use of mens "human" rather than 'n mens "a human" as generic pronoun, the use of indefinite pronouns with enig- "any" like enigiets "anything", enigiemand "anybody", enigeen "anyone", and the use of the genitive particle se "'s". The last type of change is externally motivated change. Contrary to the view the Afrikaans literature in general promotes, there is only one instance of confirmed English influence in the data of this study: the increasing use of -self with reflexive pronouns, rather than the bare object form. However, there are instances of extra-linguistic influence, like standardisation that caused large scale variation reduction between the first and the second period, and the influence of feminism that can be seen in decreasing linguistic sexism, particularly with regard to generic pronouns. The conclusion in the end is that the process of internally motivated change and contact-induced change is not different – an innovation can originate from another language (overt transfer), or an internal innovation can be promoted through bi- or multilingualism (covert transfer); however, the same principles, processes and forces of change are at play, irrespective of how many languages are involved.

Freshwater is a resource under threat due to anthropogenic actions. Stream restoration is a common method for mitigating disturbance. Inconsistent methodologies used for evaluating restorations have drawn criticism. Limited use of baseline data for guiding stream restoration activities is of particular concern. This study was developed to elucidate metrics that differentiate reference and disturbed sites in Upper Coastal Plain streams. This information could improve resource use and successes of restorations. Structural and functional variables were examined in 10 reference and 10 streams that meet the traditional definition of disturbance and would be restoration priorities. Disturbed streams were classified into two regimes, temporal, based on time since disturbance, and categorical, based on disturbance cause. Some metrics of geomorphology, water chemistry and macroinvertebrates differentiated reference from disturbed regimes and while other metrics separated streams within disturbance regimes. Surprisingly, leaf decay rate was not an effective metric for determining disturbance. However, macroinvertebrate leaf pack colonizers were found to be useful for differentiating reference sites and disturbance regimes. Of the 10 disturbed streams this study examined, my data suggests that only three are in immediate need of restoration. This study emphasizes the importance of baseline data and its potential benefits for guiding stream restoration.

The thesis investigates in what way the scholarly edition performs bibliographic functions as it manages and positions other documents. This is where the study differs from previous research on scholarly editing and bibliography. It aims to trace the boundary between scholarly editing and bibliography by comparing crucial objectives, problems and conflicts in each field. This is accomplished by identifying the argumentation, assumptions and conceptual frameworks that form the rationale for the fields, and subjecting them to qualitative critical and historical analysis. The main empirical material is editorial theory literature, with scholarly editions serving as illustrating examples. Key questions concern the way scholarly editors and bibliographers identify, define and reproduce their respective source material; the reasons for conflicts between editors’ varying expectations of the reproductive force in printed and digital editions; and the connections and demarcations between scholarly editing and bibliography and between scholarly editions and reference works such as bibliographies. Bibliographic and media theory form the basis for the theoretical framework, with additional input from book history, literary theory, genre studies and scholarly communication studies. The thesis suggests a distinction between the two activities of clustering and transposition, and the distortion the latter brings about. These concepts are employed to detect, group and explain activities and problems in scholarly editing and bibliography, who both manage sets of documents by clustering them to one another and transposing their contents by producing new documents. There is a noticeable division of labour between the two tasks, and they also correspond to different types of editions. The study also ties the dominant editorial strategies and edition types to respective bibliographic foci, and argues that central conflict areas are primarily accentuated and only secondarily introduced with digital editing. An idealistic strand treats editing as unbiased delivery of disambiguable and reproducible content, while to a hermeneutical strand the edition is an argumentative and content constraining filter, its editor being a kind of biased author. In a third strand, editions are content circulating ecosystems with a division of labour between collaborating media types. In particular the view of editions as constitutive arguments is related to analogue observations in LIS and genre and scholarly communication studies. On the one hand, editing is supposed to be a dynamic research area, ready to respond to new findings and scholarly ideals. On the other, several arenas demand the edition to serve as a conservative force, static and confirmatory. The potential of digital media points to a distinction between edition and archive, where the former but not the latter explicitly takes an interpretative stand. Digital editing also boosts the idealistic strand by the seeming promise to separate facts from interpretation and to enhance maximum exhaustiveness and reproductivity. Although the thesis identifies many commonalities between editions and reference works and the way these are structured, there is a crucial difference. The edition is simultaneously a work’s reference and referent. Bibliographies and reference works cannot make that claim. / <p>Akademisk avhandling som med tillstånd av samhällsvetenskapliga fakulteten vid</p><p>Göteborgs universitet för vinnande av filosofie doktorsexamen</p><p>framläggs till offentlig granskning kl. 13.15 lördagen den 9 december 2006</p><p>i Stora Hörsalen (C 203), Högskolan i Borås, Allégatan 1, Borås.</p>

International Telemetering Conference Proceedings / October 30-November 02, 1995 / Riviera Hotel, Las Vegas, Nevada / The necessity of supplying precise time information in large telemetry ground stations and astronomical observatories is very similar. Therefore the way of solving this problem as it is done in the Very Large Telescope of the European Southern Observatory can be easily adopted to telemetry stations and ranges, especially when fiber optics are used. The European Southern Observatory (ESO) is building a new observatory in Chile for the Very Large Telescope (VLT). This VLT consists of 4 telescopes, each of them has a primary mirror diameter of 8 meters. the control architecture is based on workstations and VMEbus computers. The VMEbus computers are distributed over the whole building and are using real time operating system. Since the availability of the Global Positioning System (GPS) the generation of highly accurate timing signals on remote locations without the use of expensive Cesium standards does not create problems any more. However, distribution of a timing signal to many computer with high accuracy is an issue. The accuracy of the commonly used IRIG B-code is not adequate if the requirements are in the 10 microseconds range. This paper presents the design of a timing system that is adopted to the VLT. An overview of the requirements of the Time Reference System (TRS) is given. These requirements have been defined on the basis of experiences with the timing system of the ESO NTT telescope. The hardware units are described. These are a Central Time Standard, a Time Distribution System and a VME Time Interface Module. The distribution is based on fiber optic transmission, using a simple digital modulation that outperforms the analog IRIG B modulation. The Time Interface Module in the computer does not only perform the timing signal decoding but contains also user-programmable timers that are synchronously clocked from the time source. Presently all units of the TRS have been tested and the series production of the distribution and the Time Interface Modules are in progress.

International Telemetering Conference Proceedings / October 21, 2002 / Town & Country Hotel and Conference Center, San Diego, California / There are many network standards in the commercial market today. The layered concept works so well, a developer can implement exactly the capability they desire through careful selection of standards and protocols. This brings up an interesting question of where we draw the line between standardizing on a single implementation and allowing the flexibility of all there is to offer? There are valid arguments for both sides. The telemetry community cannot afford to let this question fall through the cracks. We have the chance to identify what we need to do and how we should do it for both the specific application and the overall system.

Thesis (PhD) -- Stellenbosch University, 2014. / ENGLISH ABSTRACT: This thesis has as its focus the engineering of integrated knowledge networks (IKNs) through the use of a reference architecture. The purpose of the study is to gain a deeper understanding of the constructional principles underlying this class of collaborative networks. Although IKNs and enterprise engineering are both seen as promising approaches to the challenges of the Information Age, significant challenges still exist in the engineering of IKNs. Our globalised and commercialised society may currently be characterised by both extreme complexity and extreme rates of change. Enterprise engineering is seen as a promising approach to equip enterprises with the characteristics that are desirable in the modern economy, including flexibility and agility. Enterprise architecture contributes to this endeavour by providing a high-level design of the enterprise that allows for integrated engineering of the enterprise. From a commercial point of view, it has been widely recognised that the ability to innovate and generate new knowledge through the development of new products, services and processes is a key factor in the survival of enterprises. The latest trends in innovation management, however, show that the innovation process is no longer one that is executed inside a single enterprise, giving rise to the development of inter-organisational innovation networks. Furthermore, the importance of knowledge as a dynamic enabler of this networked innovation approach is highlighted. This has lead to the emergence of IKNs in which knowledge is created and shared between network stakeholders in order to foster sustainable innovation. The increasing rate of change means that enterprises, including IKNs, have progressively less time to react to market changes and opportunities. The emphasis is therefore on the potential of the EE and EA disciplines as tools to adapt to the dynamic landscape of the Information Age. At present, the ability to apply comprehensive enterprise engineering to IKNs is hampered by the lack of resources that describes sound constructional principles for these networks. The focus of this study is therefore on the application of the enterprise engineering discipline to IKNs through the development of a reference architecture. The reference architecture for IKNs is developed through design science research within a pragmatic and qualitative research strategy. The research problem is first identified and motivated. Various solution objectives are subsequently defined. This is followed by the design and development of the reference architecture through four iterative design cycles. A qualitative systematic review is conducted and serves as the foundation for the development of various reference models. The reference architecture for IKNs is demonstrated and evaluated through a series of illustrative scenarios, after which the utility, novelty and design rigour of the artefact is communicated. It was found that the reference architecture provides constructional principles in the engineering of IKNs, thus enabling the design, operation and research of this class of collaborative networks. The study therefore takes a first step toward extending the concept of EE to IKNs, and collaborative networks in general. This enables the greater adaptability of these networks to the dynamic environment of the Information Age. / AFRIKAANSE OPSOMMING: Hierdie tesis ondersoek die ontwikkeling van geïntegreerde kennisnetwerke (GK’s) aan die hand van ‘n verwysingsargitektuur. Die doel van die studie is om ’n beter begrip van die onderliggende ontwerpbeginsels van hierdie klas kollaborasie netwerke te kry. Alhoewel beide GK’s en ondernemingsingenieurswese beskou word as belowende benaderings tot die uitdagings van die Inligtingsera, bestaan beduidende uitdagings steeds in die ontwikkeling van GK’s. Ons geglobaliseerde, gekommersialiseerde samelewing word tans gekenmerk deur beide buitengewone kompleksiteit en buitengewone tempo-verandering. Ondernemingsingenieurswese word beskou as ’n belowende benadering om ondernemings toe te rus met die eienskappe wat in aanvraag is in die moderne ekonomie, insluitend aanpasbaarheid en vlugheid. Ondernemingsargitektuur dra by tot hierdie poging deur ’n hoëvlak ontwerp van die onderneming te voorsien wat geïntegreerde ontwikkeling van die onderneming toelaat. Vanuit ’n kommersiële oogpunt word dit ruim aanvaar dat die vermoë om te innoveer en nuwe kennis te ontwikkel deur die ontwikkeling van nuwe produkte, dienste en prosesse ’n kernfaktor in die oorlewing van ondernemings is. Die jongste benadering in innovasiebestuur toon aan dat die innovasieproses nie meer slegs in een onderneming uitgevoer word nie. Dit lei dan tot interorganisasie-innovasienetwerke. Die belangrikheid van kennis as ’n dinamiese instaatsteller van hierdie netwerk-innovasiebenadering word verder beklemtoon. Dit het gelei tot die ontstaan van GK’s waarin kennis tot stand gebring en gedeel word tussen netwerk belanghebbendes om sodoende volhoubare innovasie te bevorder. Die toenemende tempo in verandering beteken dat ondernemings, insluitende GK’s, toenemend minder tyd het om op markveranderings en -geleenthede te reageer. Die klem val daarom op die ondernemingsingenieursweseen ondernemingsargitektuur-dissiplines as hulpmiddels om by die dinamiese landskap van die Inligtingsera aan te pas. Tans word die vermoë om omvattende ondernemingsingenieurswese in GK’s te beoefen, gekniehalter deur die tekort aan hulpbronne wat grondige konstruksie-beginsels vir hierdie netwerke beskryf. Die fokus van hierdie studie is daarom die toepassing van die ondernemingsingenieurswese-dissipline op GK’s deur die ontwikkeling van ’n verwysingsargitektuur. Die verwysingsargitektuur vir GK’s word ontwikkel deur ontwerpwetenskapnavorsing binne ’n pragmatiese en kwalitatiewe navorsingstrategie. Die navorsingsprobleem word eers geïdentifiseer en gemotiveer. Verskeie oplossingsdoelwitte word vervolgens bepaal. Hierna geskied die ontwerp en ontwikkeling van die verwysingsargitektuur deur middel van die vier herhalende ontwerpsiklusse. Die verwysingsargitektuur vir GK’s word gedemonstreer en geëvalueer deur ’n reeks beeldende scenario’s, waarna die bruikbaarheid, nuutheid en ontwerpstrengheid van die artefak gekommunikeer word. Dit is bevind dat die verwysingsargitektuur konstruksiebeginsels in die ontwikkeling van GK’s voorsien en sodoende die ontwerp, werk en navorsing in hierdie klas kollaborasie netwerke moontlik maak. Dié studie neem ‘n eerste tree in die rigting om die konsep van ondernemingsingenieurswese tot GK’s uit te brei. Dit maak die groter aanpasbaarheid van hierdie netwerke by die dinamiese omgewing van die Inligtingsera moontlik.

The use of Unmanned Aerial Vehicles (UAV) has exploded over the last decade with the constant need to reduce costs while maintaining capability. Despite the relentless development of electronics and battery technology there is a sustained need to reduce the size and weight of the on-board systems to free-up payload capacity. One method of reducing the energy storage requirement of UAVs is to utilise naturally occurring sources of energy found in the atmosphere. This thesis explores the use of static and semi-dynamic soaring to extract energy from naturally occurring shallow layer cumulus convection to improve range, endurance and average speed. A simulation model of an X-Models XCalibur electric motor-glider is used in combination with a refined 4D parametric atmospheric model to simulate soaring flight. The parametric atmospheric model builds on previous successful models with refinements to more accurately describe the weather in northern Europe. The implementation of the variation of the MacCready setting is discussed. Methods for generating efficient trajectories are evaluated and recommendations are made regarding implementation. For micro to small UAVs to be able to track the desired trajectories a highly accurate Attitude Heading Reference System (AHRS) is needed. Detailed analysis of the practical implementation of advanced attitude determination is used to enable optimal execution of the trajectories generated. The new attitude determination methods are compared to existing Kalman and complimentary type filters. Analysis shows the methods developed are capable of providing accurate attitude determination with extremely low computational requirements, even during extreme manoeuvring. The new AHRS techniques reduce the need for powerful on-board microprocessors. This new AHRS technique is used as a foundation to develop a robust navigation filter capable of providing improved drift performance, over traditional filters, in the temporary absence of global navigation satellite information. All these algorithms have been verified by flight tests using a mixture of manned and unmanned aerial vehicles and avionics developed specifically for this thesis.

Much of our current understanding of how consumers shop for goods and services is based on cross-sectional analyses of end-of-trip variables (e.g., basket composition, total spending) that has largely assumed purchase behavior is constant over the course of a shopping trip, however research has begun to demonstrate how an initial purchase can influence a subsequent purchase decision. This suggests shopping behavior may not only vary throughout a shopping trip, but rather is specifically influenced by when a purchase decision occurs within a shopping trip. I build on this foundation through two essays that show how and why a consumer’s in-store purchasing behavior is influenced by both the decisions they have made and the decisions they anticipate to make later. The first essay demonstrates that a consumer’s relative spending— the price of an item, relative to the prices of the other items in the same product category—evolves nonlinearly over a single shopping trip, and this pattern is distinct for budget and nonbudget shoppers. The second essay examines whether and how encountering promotions in-store, but temporally in advance of the promoted product influences a consumer’s redemption decision. These findings suggest that shoppers’ decisions evolve of a single shopping trip as a function of the decisions and evaluations the have made earlier in the shopping trip, as well the decisions they still have left to make. In each essay, implications for researchers and practitioners are presented and opportunities for future research are discussed.

L’objectif principal de ce travail est de vérifier si le statut de la culture à la télévision nationale pourrait être un indicateur sur la mise en place d’un processus démocratique au Maroc. La réforme de l’audiovisuel constitue un prétexte pour observer la portée des discours réformistes, surtout quand ils sont annoncés par des régimes autoritaires. Comme nous voulons aborder un aspect spécifique d’une politique sectorielle, il serait utile de l’intégrer dans le climat global où elle évolue. En s’intéressant au passé colonial du pays, nous comprendrons les fondements du régime marocain ainsi que les relations qu’il entretient avec les différentes composantes du paysage politique.Les relations entre la monarchie et la religion, la politique et les médias, et le peuple marocain, contribueront à exposer la problématique du nouveau rôle que les réformes jouent dans la réaffirmation des régimes autoritaires. Les élections de 2011 ont permis l’accès des islamistes au gouvernement. L’élaboration des cahiers des charges de l’audiovisuel public par le ministère de tutelle provoquera un affrontement avec les vrais détenteurs de pouvoir sur ce domaine. Grâce aux conditions de la mise en application de ces textes, nous verrons comment les enjeux politiques influencent les décisions des différents acteurs, car nous souhaitons participer à poser un regard différent sur les démarches de modernisation d’un pays comme le Maroc. / This paper primarily seeks to verify whether the status of culture on Moroccan national television could be an indicator of the implementation of a democratic process in Morocco. Audiovisual reform is a pretext for observing the scope of reformist discourse, especially when such discourse is delivered by authoritarian regimes. As we intend to examine a specific aspect of policy in a given sector, it would be interesting to place it in the broader context in which it evolves. We shall take a close look at the country's colonial past to better understand the foundations of the Moroccan regime and the relations that it nurtures with the various stakeholders in the political landscape.We will use the relations between the monarchy and religion, politics and the media, and the Moroccan people to present the problematic of how authoritarian regimes now use reforms as a new way of reasserting their authority. The 2011 elections brought Islamists into the government. In the audiovisual sector, we can expect a confrontation between the true holders of power in this field and the ministry in charge of the sector when it comes to drafting the terms of reference for public radios and televisions. We shall examine how political stakes influence the decisions of the various professionals through the conditions for implementing these texts; for we wish to participate in viewing from a different angle, the modernization processes of a country such as Morocco.