707 research outputs found

    Software demonstration: the TshwaneLex electronic dictionary system

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    From Corpus to Dictionary: A Hybrid Prescriptive, Descriptive and Proscriptive Undertaking

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    Despite some heroic efforts over the past few years, Lusoga remains mostly underdeveloped. It is under continuous pressure from more prestigious languages, such as the neighbouring Luganda and especially the only official language in Uganda, English. Lusoga is undergoingrapid language shifts, with new concepts entering the language daily. Ironically, this process is taking place before Lusoga has even been properly reduced to writing. There is no single official orthography that is truly being enforced; people who do write, write as they think fit. Languagedata is needed for the production of reliable reference works. In the absence of a substantial body of published material in Lusoga, the researcher can resort to recording and transcribing the living language. This opens Pandora's box, in that spoken language (which is meant to be heard, and is typically less formal) is far more complex than written language (which is meant to be read, and is typically more formalised). Spoken and written variants are, by definition, different. And yet onewants to move the language forward, in a way, before the time is ripe. But then, with over two million speakers, how much longer can one wait? This article reports on the building of a new Lusoga corpus, nearly half of which consists of transcribed oral data. The writing problems encounteredduring the transcription effort are given detailed attention. Dealing with those writing problems in lexicography requires a multipronged approach. While most could be solved by laying down a norm, and thus through prescriptive lexicography, others need a more cautionary approach,and thus descriptive lexicography. Others still can only sensibly be solved when the lexicographer proposes certain options in defiance of existing norms and assumptions, at which point proscriptive lexicography needs to be called in

    Digitizing the Monolingual Lusoga Dictionary: Challenges and Prospects

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    This article recounts the genesis, growth and turbulent events that accompanied the compilation of the Eiwanika ly'Olusoga, that is, the Monolingual Lusoga Dictionary. Contrasting academia with the trade, legacy with state-of the-art dictionary compilation software, high praise and visibility with daily and down-to-earth drudgery, it recounts the events chronologically, from humble to grand, from paper to digital, from success to insignificance, and leads to a set of highly realistic proposals to be considered by all those involved in the compilation of explanatory dictionaries for the African languages.Keywords: monolingual lexicography, dictionary compilation software, funding, academia, trade, digitization, lusoga, ugand

    Dictionary Writing System (DWS) + Corpus Query Package (CQP): The Case of "TshwaneLex"

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    In this article the integrated corpus query functionality of the dictionary compilation software TshwaneLex is analysed. Attention is given to the handling of both raw corpus data and annotated corpus data. With regard to the latter it is shown how, with a minimum of human effort, machine learning techniques can be employed to obtain part-of-speech tagged corpora that can be used for lexicographic purposes. All points are illustrated with data drawn from English and Northern Sotho. The tools and techniques themselves, however, are language-independent, and as such the encouraging outcomes of this study are far-reaching. Keywords: lexicography, dictionary, software, dictionary writing sys-tem (dws), corpus query package (cqp), tshwanelex, corpus, corpus anno-tation, part-of-speech tagger (pos-tagger), machine learning, northern sotho (sesotho sa leboa

    From "TshwaneLex to TshwanePedia": Creating and Flexibly Maintaining Online Encyclopaedias*

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    The addition of a restricted number of features to the dictionary (compilation) soft-ware TshwaneLex suffices to turn this application into a tool for the creation and maintenance of encyclopaedias. This article gives a brief overview of those extra features, using the online encyclo-paedia of the James Randi Educational Foundation (JREF) as case study. Keywords: lexicography, dictionary, encyclopaedia, software, online, tshwanelex, tshwanepedia, james randi educational foundation

    From "TshwaneLex to TshwaneTerm": Tailoring Terminology Management for South Africa*

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    The addition of a restricted number of features to the dictionary (compilation) soft-ware TshwaneLex suffices to turn this application into a terminology management system. This article gives a brief overview of those extra features, using the Department of Arts and Culture (DAC) AIDS list as case study. Keywords: lexicography, terminology list, terminology management system, software, tshwanelex, tshwaneterm, dac aids lis

    From junior to senior Pinocchio: A cross-sectional lifespan investigation of deception

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    We present the first study to map deception across the entire lifespan. Specifically, we investigated age-related difference in lying proficiency and lying frequency. A large community sample (n = 1005) aged between 6 and 77 were surveyed on their lying frequency, and performed a reaction-time (RT) based deception task to assess their lying proficiency. Consistent with the inverted U-shaped pattern of age-related changes in inhibitory control that we observed in a stop signal task, we found that lying proficiency improved during childhood (in accuracy, not RTs), excelled in young adulthood (in accuracy and RTs), and worsened throughout adulthood (in accuracy and RTs). Likewise, lying frequency increased in childhood, peaked in adolescence, and decreased during adulthood. In sum, we observed important age-related difference in deception that generally fit with the U-shaped pattern of age-related changes observed in inhibitory control. Theoretical and practical implications are discussed from a cognitive view of deception

    Spatial development of transport structures in apple (Malus x domestica Borkh.) fruit

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    The void network and vascular system are important pathways for the transport of gases, water and solutes in apple fruit (Malus x domestica Borkh). Here we used X-ray micro-tomography at various spatial resolutions to investigate the growth of these transport structures in 3D during fruit development of ‘Jonagold’ apple. The size of the void space and porosity in the cortex tissue increased considerably. In the core tissue, the porosity was consistently lower, and seemed to decrease towards the end of the maturation period. The voids in the core were more narrow and fragmented than the voids in the cortex. Both the void network in the core and in the cortex changed significantly in terms of void morphology. An automated segmentation protocol underestimated the total vasculature length by 9 to 12% in comparison to manually processed images. Vascular networks increased in length from a total of 5 meter at 9 weeks after full bloom, to more than 20 meter corresponding to 5 cm of vascular tissue per cubic centimeter of apple tissue. A high degree of branching in both the void network and vascular system and a complex three-dimensional pattern was observed across the whole fruit. The 3D visualisations of the transport structures may be useful for numerical modeling of organ growth and transport processes in fruit

    Resonance energy transfer: The unified theory revisited

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    Resonanceenergy transfer (RET) is the principal mechanism for the intermolecular or intramolecular redistribution of electronic energy following molecular excitation. In terms of fundamental quantum interactions, the process is properly described in terms of a virtual photon transit between the pre-excited donor and a lower energy (usually ground-state) acceptor. The detailed quantum amplitude for RET is calculated by molecular quantum electrodynamical techniques with the observable, the transfer rate, derived via application of the Fermi golden rule. In the treatment reported here, recently devised state-sequence techniques and a novel calculational protocol is applied to RET and shown to circumvent problems associated with the usual method. The second-rank tensor describing virtual photon behavior evolves from a Green’s function solution to the Helmholtz equation, and special functions are employed to realize the coupling tensor. The method is used to derive a new result for energy transfer systems sensitive to both magnetic- and electric-dipole transitions. The ensuing result is compared to that of pure electric-dipole–electric-dipole coupling and is analyzed with regard to acceptable transfer separations. Systems are proposed where the electric-dipole–magnetic-dipole term is the leading contribution to the overall rate
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